IAEA Nuclear Data Section


Total Delayed Neutron Yields
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Energy
Reaction inducing fission
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Numerical data             Original
Legend Compilation by V. Piksaikin, A.S. Egorov, D.E. Gremyachkin, K.V. Mitrofanov

 *  Recommended experimental values

FSCSW = Fission spectrum. cross section weighted
TDN yield = total delayed neutron yield (νd) = average number of delayed neutrons per fission ()
β = delayed neutron fraction.
Yf(235U) = total delayed neutron yield from fast neutron induced fission of 235U.
Yt(235) = total delayed neutron yield from thermal neutron induced fission of 235U.
Y15(X) = total delayed neutron yield from fission of nucleus X by 15 MeV neutrons
σf = fission cross section.
<ν> = average number of prompt neutrons.
(a) = delayed neutrons per atom/100 incident neutrons (see R.J. Tuttles comments).
Previous compilations

R.J. Tuttle, Review of delayed neutron yields in nuclear fission, Procedings of the consultants' meeting on delayed neutron properties, report IAEA, indc-107/G, 1979

S. A. Cox, Delayed Neutron Data - Review and Evaluation, ANL/NDM-5, Argonne National Laboratory, 1974

Yu.S. Zamyatnin , V.M. Gorbachev ., A.A. Lbov, Interaction of the radiation with heavy nuclei and nuclear fission. Handbook, Moscow, Atomizdat, 1976

# Target Energy [MeV] Total delayed neutron yield Adjustment basis Reference
Reported Adjusted
209-BiCharged - Particle induced fission
1209-Bi29.1 (He-3)0.0009 ± .0001mbReported by: E. T. Chulick and P. l. Reeder, Nucl. Phys, A173, 497, 1971.
2209-Bi33.7 (He-3)0.0172 ± .0024mb
231-PaNeutron induced fission
3231-Pa14.80.0060 ± 25%0.0080 ± .0026Reported by: Brown M.G. et al., Radiochem. Acta, 1971, Bd 15, S. 109. Adjusted by: R.J. Tuttle, 1979.
4231-Pa  * fast(0.0111 ± 0.0011)Recommended by: R.J. Tuttle, 1979. (Value is influenced by empirical estimates).
232-ThNeutron induced fission
5232-Th14.0 max0.08 ± 0.03Reported by: K.H.Sun et al., Phys.Rev., vol. 79, 3, 1950.
6232-Th30.0476 ± 0.00800.0568 ± 0.0145Reported by: Brunson G.S. et al. Nucl. Sci. Eng., 1956, v.1, p.174. Adjusted by: R.J. Tuttle, 1979.
7232-Th30.038 ± 0.0080.0375 ± 0.0090Reported by: H. Rose and R. D. Smith, J. Nucl. Energy, vol.1, 4, 133 (1957). Adjusted by: R.J. Tuttle, 1979.
8232-Th30.038 ± 0.0080.0369 ± 0.0045Reported by: H. Rose and R. D. Smith, J. Nucl. Energy, vol.1, 4, 133 (1957). Adjusted by: Cox, 1974
9232-Th3.5 FSCSW0.0496 ± 0.00200.0505 ± 0.0052Reported by: Keepin G.R., Wimett T.F., Zeigler R.K., J. Nucl. Energy, 6, 1, (1957), and Phys. Rev., 107, 1044 (1957). Adjusted by: R.J. Tuttle, 1979.
10232-Th3.5 FSCSW0.0496 ± 0.00200.0496 ± 0.0035Reported by: Keepin G.R., Wimett T.F., Zeigler R.K., J. Nucl. Energy, 6, 1, (1957), and Phys. Rev., 107, 1044 (1957). Adjusted by: Zamyatnin, 1976.
11232-Th3.5 FSCSW0.0496 ± 0.00200.0505 ± 0.0020Reported By: Keepin G.R., Wimett T.F., Zeigler R.K., J. Nucl. Energy, 6, 1, (1957), and Phys. Rev., 107, 1044 (1957). Adjusted by: Cox, 1974.
12232-Th2.40.0524 ± 0.00400.0571 ± 0.0051Reported by: B.P.Maksyutenko, Soviet At.Energ.,vol.7,943 (1961), translated from Atom.Energ. Vol.7,474 (1959). Adjusted by: R.J. Tuttle,1979.
13232-Th3.30.049 ± 0.0040.0534 ± 0.0048Reported by: B.P.Maksyutenko, Soviet At.Energ.,vol.7,943 (1961) translated from Atom.Energ. Vol.7,474 (1959). Adjusted by: R.J. Tuttle,1979.
14232-Th15.00.079 ± 0.0060.0835 ± 0.0069
15232-Th14.00.058 ± 0.014Reported by: W.E.McGarry et al., Bull.Am.Phys.Soc.II,vol.5,33 (1960).
16232-Th14.50.075 ± 0.0070.0782 ± 0.0075"Reported by V. I. Shpakov , K. A. Petrzhak , M. A. Bak , S. S. Kovolenko , an d . I. Kostochkin , Atomnaya Energiya 11 , 53 9 (1961) .
17232-Th14.00.019 ± 0.0050.0218 ± 0.0030Reported by: G. Herrmann, Delayed Fission Neutrons, Proc. Panel, International Atomic Energy Agency, Vienna (1968). Adjusted by: R.J. Tuttle, 1979.
18232-Th14.00.019 ± 0.0050.0205 ± 0.0027Reported by: G. Herrmann, Delayed Fission Neutrons, Proc. Panel, International Atomic Energy Agency, Vienna (1968). Adjusted by: Cox 1974.
19232-Th14.80.019 ± 0.0050.019 ± 0.003Reported by: G. Herrmann, Delayed Fission Neutrons, Proc. Panel, International Atomic Energy Agency, Vienna (1968). Adjusted by: Zamyatnin 1976.
20232-Th3.10.060 ± 0.0060.0566 ± 0.0042Reported by: C. F. Masters, et al., Nucl. Sci. Eng. 36, 202, 1969. Adjusted by: Evans A.E. et al., Nucl. Sci. Eng., 1973, v. 50, p. 80.
21232-Th14.90.030 ± 0.0020.030 ± 0.002Reported by: C. F. Masters, et al., Nucl. Sci. Eng. 36, 202, 1969. Adjusted by: Evans A.E. et al., Nucl. Sci. Eng., 1973, v. 50, p. 80.
22232-Th3.10.060 ± 0.0060.0570 ± 0.0050Reported by: C. F. Masters, et al., Nucl. Sci. Eng. 36, 202, 1969. Adjusted by: Zamyatnin, 1976.
23232-Th3.10.060 ± 0.0060.0570 ± 0.0040Reported by: C. F. Masters, M.M. Thrope, and D.B. Smith, Nucl. Sci. Eng., 36, 202, (1969). Adjusted by: Cox, 1974.
24232-Th14.10.0119±0.00140.0311 ± 0.0037Reported by: Keepin G.R.et al. Rep. LA-4227-MS, 1969, p. 17; LA-4320-MC, 1969. Adjusted by: R.J. Tuttle, 1979.
25232-Th14.10.0119±0.00140.0315 ± 0.0037Reported by: G.R. Keepin (editor), LA-4227-MS, Los Alamos Scientific Laboratory (1969). Adjusted by: Cox, 1974.
26232-Th14.90.0123±0.00110.0287 ± 0.0026Reported by: Keepin G.R.et al. Rep. LA-4227-MS, 1969, p. 17; LA-4320-MC, 1969. Adjusted by: R.J. Tuttle, 1979.
27232-Th14.90.0123±0.00110.0300 ± 0.0030Reported by: Keepin G.R.et al. Rep. LA-4227-MS, 1969, p. 17; LA-4320-MC, 1969. Adjusted by: Zamyatnin, 1976.
28232-Th14.90.0123±0.00110.0287 ± 0.0026Reported by: Keepin G.R.et al. Rep. LA-4227-MS, 1969, p. 17; LA-4320-MC, 1969. Adjusted by: Cox, 1974.
29232-Th140.0170 ± 0.0072Reported by: Notea A. , Rep. IA-1190, P.95, Israel Atomic Energy Comm. (1969). Adjusted by: R.J. Tuttle, 1979.
30232-Th140.0128 ± 0.0050Reported by: A. Notea, Rep. IA-1190, P.95, Israel Atomic Energy Comm. (1969). Adjusted by: Cox, 1974.
31232-Th14.80.014 ± 0.005Reported by: A. Notea, Rep. IA-1190, P.95, Israel Atomic Energy Comm. (1969). Adjusted by: Manero F. , Atomic Energy Rev.,1972, v.10, No.4, p.657.
32232-Th140.0191 ± 0.00650.0209 ± 0.0042Reported by: G.Benedict, Annual report 1968, BMBW-FB K70-04, University of Mainz (1970). Adjusted by: R.J. Tuttle, 1979.
33232-Th14.80.019 ± 0.006Reported by: Benedict G. et al., Radiochem. Acta, 1972, Bd 17, +-1, S.61. Adjusted by: Zamyatnin, 1976.
34232-Th1.3 - 1.60.05050.0525 + 0.0040Reported by: Cox S.A., Whiting D.E.E. Rep. ANL-7610, 1970, p.45. Adjusted by: R.J. Tuttle, 1979.
35232-Th1.30.0465 ± 0.0030Reported by: Cox S.A., Whiting D.E.E. Rep. ANL-7610, 1970, p.45.
36232-Th1.350.0490 ± 0.0025
37232-Th1.40.0540 ± 0.0020
38232-Th1.50.0505 ± 0.0020
39232-Th1.60.0530 ± 0.0025
40232-Th14.80.0269 ± 0.00400.0286 ± 0.0048Reported by: Brown M.G. et al., Radiochem. Acta, 1971, Bd 15, S. 109. Adjusted by: R.J. Tuttle, 1979.
41232-Th14.80.0269 ± 0.00400.036 ± 0.007Reported by: Brown M.G. et al., Radiochem. Acta, 1971, Bd 15, S. 109. Adjusted by Zamyatnin, 1976.
42232-Th14.90.030 ± 0.0030Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80.
43232-Th14.90.0300 ± 0.0027C. F. Masters, M.M. Thrope, and D.B. Smith, Nucl. Sci. Eng., 36, 202, (1969).
44232-Thfast0.0527 ± 0.0040R.W. Waldo, R.A. Karam, R.A. Meyer. Delayed neutron yields: Time dependent measurements and a predictive model. Phys. Rev., C, V. 23, No. 3, 1981.
45232-Th3.20.0579 ± 0.0023V.M. Piksaikin, A.S. Egorov, K.V. Mitrofanov, A.A. Goverdovski. Total delayed neutron yields for neutron induced fission of 232Th in energy range 3.2-4.9 MeV. Atomic Energy, V. 112, No. 6, pp.350-355, 2012.; Piksaikin V.M., Egorov A.S., Mitrofanov K.V. The absolute total delayed neutron yields, relative abundances and half-life of delayed neutron groups from neutron induced fission of 232Th, 233U, 236U, 239Pu AND 241Am. Report INDC(NDS) - 0646, 2013, IAEA, Vienna, Austria.
46232-Th3.80.0572 ± 0.0024
47232-Th4.20.0550 ± 0.0042
48232-Th4.50.0557 ± 0.0063
49232-Th4.70.0543 ± 0.0031
50232-Th4.90.0568 ± 0.0032
51232-Th1.9960,0592 ± 0,0035X. Ledoux et al., Delayed neutron measurements of 232Th neutron-induced fission. Annals of Nuclear Energy 76 (2015) 514�520
52232-Th2.9740,0565 ± 0,0035X. Ledoux et al., Delayed neutron measurements of 232Th neutron-induced fission. Annals of Nuclear Energy 76 (2015) 514�521
53232-Th3.9990,0549 ± 0,0034X. Ledoux et al., Delayed neutron measurements of 232Th neutron-induced fission. Annals of Nuclear Energy 76 (2015) 514�522
54232-Th3.9990,0564 ± 0,0035X. Ledoux et al., Delayed neutron measurements of 232Th neutron-induced fission. Annals of Nuclear Energy 76 (2015) 514�523
55232-Th5.9970,0359 ± 0,0023X. Ledoux et al., Delayed neutron measurements of 232Th neutron-induced fission. Annals of Nuclear Energy 76 (2015) 514�524
56232-Th6.9670,0310 ± 0,0018X. Ledoux et al., Delayed neutron measurements of 232Th neutron-induced fission. Annals of Nuclear Energy 76 (2015) 514�525
57232-Th10.0240,0292 ± 0,0025X. Ledoux et al., Delayed neutron measurements of 232Th neutron-induced fission. Annals of Nuclear Energy 76 (2015) 514�526
58232-Th15.9360,0258 ± 0,0017X. Ledoux et al., Delayed neutron measurements of 232Th neutron-induced fission. Annals of Nuclear Energy 76 (2015) 514�527
59232-Th  * less than 4.00.0527 ± 0.0040Reported by: Cox, 1974.
60232-Th  * 4.0-7.00.0414 ± 0.0040
61232-Th  * 7.0-20.00.030 ± 0.004
62232-Th  * fast0.0531 ± 0.0023Reported by: R.J. Tuttle. Delayed-neutron yields in nuclear fission. Procedings of the consultants' meeting on delayed neutron properties, Vienna, 26-30 March 1979. INDC(NDS)-107/G+Special. pp. 29-67, 1979.
232-ThPhotofission
63232-Th12. 200.0285 ± 0.008Reported by: G. Moscati and J. Goldemberg, Phys. Rev., 126, 1098 (1962).
64232-Th120.0285 ± 0.0080.027 ± 0.008Reported by: G. Moscati and J. Goldemberg, Phys. Rev., 1962, v. 126, p. 1098. Adjusted by: Zamyatnin,1976.
65232-Th200.0285 ± 0.0080.030 ± 0.012
66232-Th150.038 ± 0.006Reported by: O.P. Nikotin and K.A. Petrzhak, Soviet At. Energy, 20, No.3, 268 (1966).
67232-Th8-120.0280 ± 0.0012Reported by: J. T. Caldwell, E. J. Dowdy, and G. M. Worth, Physics and Chemistry of Fission 1973, Vol. I, p 431, IAEA, Vienna (1974).
68232-Th8-130.0280 ± 0.0028Reported by: J. T. Caldwell and E. J. Dowdy, Nucl. Sci. Eng., 56, 179 (1975). Adjusted by: Zamyatnin,1976.
69232-Th6.440.0310 ± 0.0028
70232-Th7.020.0306 ± 0.0031
71232-Th7.100.0267 ± 0.0021
72232-Th8.060.0259 ± 0.0031
232-ThCharged Particle Fission
73232-Th21.7 (He-3)0.022 ± 0.004Reported by: E. T. Chulick and P. l. Reeder, Nucl. Phys, A173, 497 (1971).
74232-Th23.3 (He-3)0.021 ± 0.003
75232-Th28.9 (He-3)0.013 ± 0.002
76232-Th33.8 (He-3)0.0044 ± 0.0009
77232-Th19.9 (He-4)0.053 ± 0.010
78232-Th28.9 (He-4)0.018 ± 0.002
232-UNeutron induced fission
79232-Ufast0.0044 ± 0.0003Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer, Phys. Rev., C, V. 23, No. 3, 1981.
233-UNeutron induced fission
80233-UThermal0.0060 ± 0.00050.00629 ± 0.00073Reported by: Brunson G.S. et al. Nucl. Sci. Engng., 1956, v.1, p.174. Adjusted by: R.J. Tuttle, 1979.
81233-U0.270.0064 ± 0.00050.00652 + 0.00075
82233-Uthermal0.0060 ± 0.00050.0065 ± 0.0005Reported by: Brunson G.S. et al. Nucl. Sci. Eng., 1956, v.1, p.174. Adjusted by: Zamyatnin, 1976.
83233-U10.0074 ± 0.00060.00737 ± 0.00080Reported by: H. Rose and R. D. Smith, J. Nucl. Energy, vol.1, 4, 133 (1957). Adjusted by: R.J. Tuttle, 1979.
84233-U10.0074 ± 0.00060.00716±0.00043Reported by: H. Rose and R. D. Smith, J. Nucl. Energy, vol.1, 4, 133 (1957). Adjusted by: Cox, 1974.
85233-UThermal0.0066 ± 0.00030.0066 ± 0.0007Reported by: Keepin G.R., et al., Phys. Rev., 1957, v 107,p 1044 and also G.R.Keepin,et al.,J. Nucl. Energy, 6,1(1957). Adjusted by: R.J. Tuttle, 1979.
86233-U1.45 FSCSW0.0070 ± 0.00040.00729 ± 0.00081
87233-Uthermal0.0066 ± 0.00030.0066 ± 0.0005Reported by: Keepin G.R., Wimett T.F., Zeigler R.K. Phys. Rev., 1957, v 107, p 1044. Adjusted by: Zamyatnin, 1976.
88233-U1.45 FSCSW0.0070 ± 0.00040.0070 ± 0.0006
89233-Uthermal0.0066 ± 0.00030.0066 ± 0.0003Reported by: Keepin G.R., Wimett T.F., Zeigler R.K., J. Nucl. Energy, 6, 1, (1957), and Phys. Rev., 107, 1044 (1957). Adjusted by: Cox, 1974.
90233-U1.45 FSCSW0.0070 ± 0.00040.0073 ± 0.0004
91233-U140.0142 ± 0.0042Reported by: W.E.McGarry et al., Bull.Am.Phys.Soc.II,vol.5,33 (1960).
92233-U3.10.0077 ± 0.00080.00751 ± 0.00061Reported by: Masters C.F. et al. Nucl. Sci. Eng., 1969, v. 36, p.202. Adjusted by: R.J. Tuttle, 1979.
93233-U3.10.0077 ± 0.00080.0074 ± 0.0006Reported by: Masters C.F. et al. Nucl. Sci. Eng., 1969, v. 36, p.202. Adjusted by: Zamyatnin, 1976.
94233-U3.10.0077 ± 0.00080.0074 ± 0.0008Reported by: C. F. Masters, M.M. Thrope, and D.B. Smith, Nucl. Sci. Eng., 36, 202, (1969). Adjusted by: Cox, 1974.
95233-U14.90.0041 ± 0.00030.0043 ± 0.0004Reported by: C. F. Masters, M.M. Thrope, and D.B. Smith, Nucl. Sci. Eng., 36, 202, (1969). Adjusted by: Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80.
96233-U14.10.0109 ± 0.00100.00439 ± 0.00041Reported by: Keepin G.R.et al. Rep. LA-4227-MS, 1969, p. 17; LA-4320-MC, 1969. Adjusted by: R.J.Tuttle, 1979.
97233-U14.90.0109 ± 0.00110.00433 ± 0.00044
98233-U14.90.0109 ± 0.00110.0046 ± 0.0005Reported by: Keepin G.R.et al. Rep. LA-4227-MS, 1969, p. 17; LA-4320-MC, 1969. Adjusted by: Zamyatnin 1976
99233-U14.10.0109 ± 0.00100.00439 ± 0.00044Reported by: G.R. Keepin (editor), LA-4227-MS, Los Alamos Scientific Laboratory (1969). Adjusted by: Cox, 1974.
100233-U14.90.0109 ± 0.00110.00433 ± 0.00044
101233-UThermal0.0082 ± 0.0026Reported by: Notea A., Israel Atomic Energy Comm. Rep. IA-1190, 1969, p.95. Adjusted by: R.J. Tuttle, 1979.
102233-UThermal0.0054 ± 0.0013Reported by: Notea A., Israel Atomic Energy Comm. Rep. IA-1190, 1969, p.95. Adjusted by: Zamyatnin, 1976.
103233-UThermal0.00575 ± 0.00140Reported by: A. Notea, Report IA-1190, P.95, Israel Atomic Energy Comm. (1969). Adjusted by: Cox, 1974.
104233-UThermalβ = 0.0027 ± 0.00010.00674 ± 0.00042Reported by: Conant J.F., Palmedo P.F. Nucl. Sci. Eng., 1971, v.44, p. 173. (R.J. Tuttle, 1979)Adjusted by: R.J. Tuttle, 1979
105233-UThermalβ = 0.0027 ± 0.00010.0067 ± 0.0003Reported by: Conant J.F., Palmedo P.F. Nucl. Sci. Eng., 1971, v.44, p. 173. Adjusted by: Zamyatnin, 1976.
106233-UThermalβ = 0.0027 ± 0.00010.00671 ± 0.00041Reported by: J. F. Conant and P.F. Palmeda, Nucl. Sci. Eng., 44, 173 (1971). Adjusted by: Cox, 1974.
107233-U0.1 - 1.80.0075 ± 0.0006Reported by: Krick M.S. et al., Nucl.Sci.Eng.1972,v.47,p.311, Trans.Amer.Nucl.Soc.,1970, v.13,p.746. Adjusted by: Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80.
108233-U14.90.0041 ± 0.00030.0041 ± 0.0003
109233-U0.050.00735 ± 0.00064Reported by: Krick M.S. et al., Nucl.Sci.Eng.1972,v.47,p.311. Adjusted by: Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80.
110233-U0.110.00735 ± 0.00064
111233-U0.210.00730 ± 0.00064
112233-U0.320.00741 ± 0.00064
113233-U0.430.00734 ± 0.00064
114233-U0.530.00745 ± 0.00065
115233-U0.640.00745 ± 0.00065
116233-U0.740.00759 ± 0.00066
117233-U0.840.00759 ± 0.00066
118233-U0.940.00749 ± 0.00065
119233-U1.050.00759 ± 0.00066
120233-U1.150.00759 ± 0.00066
121233-U1.250.00744 ± 0.00065
122233-U1.350.00765 ± 0.00066
123233-U1.450.00765 ± 0.00066
124233-U1.550.00759 ± 0.00066
125233-U1.650.00739 ± 0.00064
126233-U1.750.00759 ± 0.00066
127233-U40.0080 ± 0.0009
128233-U4.50.0074 ± 0.0009
129233-U5.10.0070 ± 0.0008
130233-U5.350.0065 ± 0.0008
131233-U5.60.0055 ± 0.0007
132233-U6.10.0050 ± 0.0006
133233-U6.60.0051 ± 0.0006
134233-UThermal0.0074 ± 0.0004Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer. Phys. Rev., C, V. 23, No. 3, 1981.
135233-U0.34 ± 0.070.00746 ± 0.00037Reported by: Piksaikin V.M., Egorov A.S., Mitrofanov K.V. , Report INDC(NDS) - 0646, 2013, IAEA, Vienna, Austria;
136233-U0.59 ± 0.080.00748 ± 0.00037V.M. Piksaikin et al., Instruments and Experimental Techniques, 49(6), pp.765-777, January 2006. (DOI:
137233-U0.81 ± 0.090.00746 ± 0.0003510.1134/S0020441206060030).
138233-U1.01 ± 0.100.00744 ± 0.00037
139233-U3.23 ± 0.150.00794 ± 0.00039
140233-U3.75 ± 0.140.00804 ± 0.00040
141233-U4.20 ± 0.170.00760 ± 0.00038
142233-U4.72 ± 0.210.0069 ± 0.0003
143233-U4.90 ± 0.210.00668 ± 0.00033
144233-UThermal0.00674 ± 0.00022Reported by: S.B. Borzakov et al., Physics of Atomic Nuclei, Vol. 63, No. 4, 2000, pp. 589-597.
145233-U  * less than 4.50.0074 ± 0.0004Reporeted by: Cox 1974.
146233-U  * 4.5-7.00.0059 ± 0.0004
147233-U  * 7.0-20.00.0044 ± 0.0005
148233-U  * thermal0.00667 ± 0.00029Reported by: R.J. Tuttle, Report INDC(NDS)-107/G+Special. pp. 29-67, 1979, IAEA, Vienna, Austria.
149233-U  * fast0.00731 ± 0.00036
233-UPhotofission
150233-U8-130.00553 ± 0.00044Reported by: J. T. Caldwell and E. J. Dowdy, Nucl. Sci. Eng., 56, 179 (1975).
151233-U6.680.00455 ± 0.00045Reported by: Caldwell J. T., Dowdy E. J. - Nucl. Sci. Eng., 1975, v. 56, 179. Adjusted by: Zamyatnin, 1976.
152233-U7.90.00518 ± 0.00040
153233-U9.550.00640 ± 0.00044
154233-U10.270.00598 ± 0.00051
234-UPhotofission
155234-U8-130.0094 ± 0.00094Reported by: J. T. Caldwell and E. J. Dowdy, Nucl. Sci. Eng., 56, 179 (1975).
156234-U8.690.0092 ± 0.0006Reported by: Caldwell J. T., Dowdy E. J. - Nucl. Sci. Eng., 1975, v. 56, 179. Adjusted by: Zamyatnin, 1976.
157234-U9.540.0097 ± 0.0012
235-UNeutron induced fission
158235-UThermalβ = 0.010 ± 0.0020.0176 ± 0.0054Reported by: A.H.Snell et al., Phys.Rev.,vol.72, 541 (1947). Adjusted by: R.J.Tuttle,1979.
159235-UThermalβ = 0.00755 ± 0.000500.0183 ± 0.0026Reported by: D.J.Hughes et al., Phys.Rev., vol.73,111 (1948). Adjusted by: R.J.Tuttle,1979.
160235-Uthermalβ = 0.00755 ± 0.000500.0183 ± 0.0014Reported by: D.J.Hughes et al., Phys.Rev., vol.73,111 (1948). Adjusted by: Zamyatnin, 1976.
161235-UThermal0.0175 ± 0.0028Brunson G.S. et al. Nucl. Sci. Eng., 1956, v.1, p.174. Adjusted by: R.J.Tuttle,1979.
162235-U0.290.0172 ± 0.0023
163235-Uthermal0.0168 ± 0.0018Brunson G.S. et al. Nucl. Sci. Eng., 1956, v.1, p.174. Adjusted by: Zamyatnin 1976.
164235-U10.0174 ± 0.00140.0174 ± 0.0019"Reported by: H. Rose and R. D. Smith, ""J. Nucl. Energy"", vol.1, 133 (1957). Adjusted by: R.J. Tuttle, 1979."
165235-UThermal0.0158 ± 0.00050.0158 ± 0.0016Reported by: G. R. Keepin, T. F. Wimett, and R. K. Zeigler, J. Nucl. Energy, 6, 1 (1957). Adjusted by: R.J.Tuttle,1979.
166235-U1.45 FSCSW0.0165 ± 0.00050.01675 ± 0.0017
167235-Uthermal0.0158 ± 0.00050.0158 ± 0.0007Reported by: Keepin G. R., Wimett T. F., and Zeigler R. K. - Phys. Rev., 1957, v. 107, p. 1044. Adjusted by: Zamyatnin 1976.
168235-U1.45 FSCSW0.0165 ± 0.00050.0165 ± 0.0007
169235-Uthermal0.0158 ± 0.00050.0158 ± 0.0007Reported by: Keepin G.R., Wimett T.F., Zeigler R.K., J. Nucl. Energy, 6, 1, (1957), and Phys. Rev., 107, 1044 (1957). Adjusted by: Cox, 1974.
170235-U1.45 FSCSW0.0165 ± 0.00050.0167 ± 0.0007
171235-UThermal(reference data)0.0173 ± 0.0012Reported by: B.P.Maksyutenko, Soviet At.Energ.,vol.7,943 (1961) translated from Atom.Energ. Vol.7,474 (1959). Adjusted by: R.J.Tuttle,1979.
172235-U2.40.0178 ± 0.0012
173235-U3.30.0171 ± 0.0012
174235-U150.0304 ± 0.0015
175235-U140.022 ± 0.005Reported by: W.E.McGarry et al., Bull.Am.Phys.Soc.II,vol.5,33 (1960).
176235-UThermal0.0221 ± 0.0031Reported by: G. Herrmann, Delayed Fission Neutrons, Proc. Panel, International Atomic Energy Agency, Vienna (1968).
177235-U3.10.0173 ± 0.0012Reported by: C. F. Masters, M. M. Thorpe, and D. B. Smith, Nucl. Sci. Eng., 36,202 (1969). Adjusted by: R.J.Tuttle,1979.
178235-U14.90.0095 ± 0.0008Reported by: Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80.
179235-U3.10.0172 ± 0.0013Reported by: C. F. Masters, M.M. Thrope, and D.B. Smith, Nucl. Sci. Eng., 36, 202, (1969). Adjusted by: Cox, 1974.
180235-U14.10.0212 ± 0.00170.0094 ± 0.0008Reported by: G.R.Keepin, Rep. LA-4227-MS, Los Alamos scientific laboratory, 1969, p. 17; LA-4320-MC, 1969. Adjusted by: R.J.Tuttle,1979.
181235-U14.90.0214 ±0.00170.0092 ± 0.0007
182235-U14.90.0214 ±0.00170.0098 ± 0.0008Reported by: G.R. Keepin, Rep. LA-4227-MS, 1969, p. 17; LA-4320-MC, 1969. Adjusted by: Zamyatnin 1976.
183235-U14.10.0212 ± 0.00170.0089 ± 0.0007Reported by: G.R. Keepin (editor), LA-4227-MS, Los Alamos Scientific Laboratory (1969). Adjusted by: Cox, 1974.
184235-U14.90.0214 ±0.00170.0088 ± 0.0007
185235-UThermal0.0254 ± 0.0081Reported by: Notea A., Israel Atomic Energy Comm., Rep. IA-1190, 1969, p.95. Adjusted by: R.J.Tuttle,1979.
186235-Uthermal0.0205 ± 0.0061Reported by: Notea A., Israel Atomic Energy Comm., Rep. IA-1190, 1969, p.95. Adjusted by: Zamyatnin 1976
187235-UThermal0.0217 ± 0.0039Reported by: G.Benedict, Annual report 1968, BMBW-FB K70-04, University of Mainz (1970). Adjusted by: R.J. Tuttle, 1979.
188235-U0.25 - 1.50.0170 ± 0.0011Reported by: Cox S.A., Whiting D.E.E. Rep. ANL-7610, 1970, p.45. Adjusted by: R.J. Tuttle, 1979.
189235-U0.250.0171 ± 0.0008Reported by: Cox S.A., Whiting D.E.E. Rep. ANL-7610, 1970, p.45.
190235-U0.60.0170 ± 0.0008
191235-U10.0167 ± 0.0008
192235-U1.20.0167 ± 0.0008
193235-U1.50.0165 ± 0.0007
194235-UThermalβ = 0.0065 ± 0.00030.0157 ± 0.0010Reported by: Conant J.F., Palmedo P.F. Nucl. Sci. Eng., 1971, v.44, p. 173. Adjusted by: R.J. Tuttle, 1979.
195235-Uthermalβ = 0.0065 ± 0.00030.0158 ± 0.0007Reported by: Conant J.F., Palmedo P.F. Nucl. Sci. Eng., 1971, v.44, p. 173. Adjusted by: Zamyatnin, 1976.
196235-Uthermalβ = 0.0065 ± 0.00030.0158 ± 0.0010Reported by: Conant J.F., Palmeda P.F. Nucl. Sci. Eng., 1971, v.44, p. 173.Adjusted by: Cox, 1974.
197235-U0.1 - 1.8 (averaged)0.0163 ± 0.0013Reported by:Krick M.S. et al., Nucl.Sci. Eng.,1972,v.47,p.311, Trans.Amer.Nucl.Soc.,1970,v.13,p.746.
198235-U0.50.0165 ± 0.0013Reported by: Krick M.S. et al., Nucl.Sci.Eng.1972,v.47,p.311, Trans.Amer.Nucl.Soc.,1970,v.13,p.746. Adjusted by: Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80.
199235-U0.150.0162 ± 0.0012
200235-U0.250.0166 ± 0.0013
201235-U0.360.0165 ± 0.0013
202235-U0.460.0162 ± 0.0012
203235-U0.560.0160 ± 0.0012
204235-U0.670.0160 ± 0.0012
205235-U0.770.0162 ± 0.0012
206235-U0.870.0163 ± 0.0013
207235-U0.970.0160 ± 0.0012
208235-U1.070.0163 ± 0.0013
209235-U1.170.0167 ± 0.0013
210235-U1.270.0171 ± 0.0013
211235-U1.370.0170 ± 0.0013
212235-U1.470.0160 ± 0.0012
213235-U1.560.0167 ± 0.0013
214235-U1.650.0163 ± 0.0013
215235-U1.750.0161 ± 0.0012
216235-U40.0153 ± 0.0015
217235-U4.40.0146 ± 0.0015
218235-U4.80.0151 ± 0.0014
219235-U5.10.0136 ± 0.0014
220235-U5.60.0125 ± 0.0013
221235-U5.70.0111 ± 0.0013
222235-U60.0123 ± 0.0013
223235-U6.40.0102 ± 0.0012
224235-U6.70.0105 ± 0.0012
225235-U0.630.0174 ± 0.0015"Reported by: Clifford D.A., McTaggart H.N. (data are presented in Tomlinson L. Delayed neutrons from fission, Rep. AERE-R 6993, ""A compilation and evaluation of experimental data"", 1972.)"
226235-U0.630.0174 ± 0.00150.0174 ± 0.0008Reported by: D.A. Clifford et al. Adjusted by: Cox,1974, on the basis of paper reported by M.H. McTaggart in Fast Integral Assembly Newsletter Nos. 19-22, March 1972.
227235-U0.960.01650 ± 0.00100"Reported by: Cox S. A. , ""Delayed Neutron Data - Review and Evaluation,"" ANL/NDM-5, Argonne National Laboratory (1974)."
228235-U1.970.01657 ± 0.00100
229235-U2.980.01696 ± 0.00100
230235-U3.980.01666 ± 0.00100
231235-U0.630.0164 ± 0.00060.0166 ± 0.0006"Reported by: C. B. Besant, et al., ""J.Br.Nucl.Energy Soc"".,vol.16,161 (1977). Adjusted by : J. G. Williams.Procedings of the consultants' meeting on delayed neutron properties, Vienna, INDC(NDS)-107/G, 1979."
232235-UThermal0.0156 ± 0.0010Reported by: S. Synetos and J. G. Williams.Procedings of the consultants' meeting on delayed neutron properties, Vienna, 1979,
233235-U3.10.0172 ± 0.0013Reported by: C. F. Masters, et al., Nucl. Sci. Eng., 36, 202, 1969.
234235-U14.90.0091 ± 0.0004Reported by:Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80.
235235-U14.90.0091 ± 0.0004Reported by: C. F. Masters, M.M. Thrope, and D.B. Smith, Nucl. Sci. Eng., 36, 202, (1969)
236235-U14.90.0098 ± 0.0008Reported by: G.R.Keepin, Rep. LA-4227-MS, Los Alamos scientific laboratory, 1969, p. 17; LA-4320-MC, 1969.
237235-U1.1650.01709 ± 0.00082Reported by: V.M. Piksaikin et al., Conf. Proc., Nucl. Data for Science and Technology, Bologna, Vol. 59, 1997, pp. 485-487.
238235-U0.34 ± 0.070.0163 ± 0.0006Reported by: V.M. Piksaikin et al.,. Yad. Fiz. (in Russia), 1999, v. 62, No. 6, pp. 1-9; Phys. Atomic. Nuclei., v.62,1279 (1999) (in English).
239235-U0.59 ± 0.080.0164 ± 0.0007
240235-U0.81 ± 0.090.0171 ± 0.0008
241235-U1.01 ± 0.100.0158 ± 0.0010
242235-U3.23 ± 0.150.0158 ± 0.0010
243235-U3.75 ± 0.140.0159 ± 0.0010
244235-U4.20 ± 0.170.0143 ± 0.0009
245235-U4.72 ± 0.210.0139 ± 0.0009
246235-Ufast (En ~ Fission spectrum)0.0163 ± 0.0008Reported by: D. J. Loaiza et al., Nuclear Science and Engineering, Vol. 128, No. 3, 1998, pp. 270-277.
247235-Ufast (En~144 keV)0.0159 ± 0.0004Reported by: H.H. Saleh et al., Nuclear Science and Engeneering, vol. 125, No 1, pp. 51-60.
248235-Ufast (En~144 keV)0.0167 ± 0.0008Reported by: W.S. Charlton, et al., Conf. Proc. Vol. 59. Nucl. Data for Science and Technology, Bologna, 1997, pp. 491-493.
249235-Uthermal0.0167 ± 0.0007Reported by: R.W. Waldo, et al., Phys. Rev., C, V. 23, No. 3, 1981.
250235-Uthermal0.0162Reported by: A. D'Angelo, J.L. Rowlands, Progress in Nuclear Energy, Vol. 41. No. 1-4, pp. 391-412, 2002.
251235-Ufast0.0163
252235-U  * less than 4.00.01668 ± 0.00070"Reported by: Cox S. A. , ""Delayed Neutron Data - Review and Evaluation,"" ANL/NDM-5, Argonne National Laboratory (1974)."
253235-U  * 4.0-7.00.0129 ± 0.0007
254235-U  * 7.0-20.00.0090 ± 0.0010
255235-U  * thermal0.01621 ± 0.00050Reported by: R.J. Tuttle, Procedings of the consultants' meeting on delayed neutron properties, Vienna, 26-30 March 1979. INDC(NDS)-107/G+Special. pp. 29-67, 1979
256235-U  * fast0.01673 ± 0.00036
257235-U  * thermal0.0165 ± 0.0002Reported by: Y. KANEKO, F. AKINO, T. YAMANE, NUCLEAR SCIENCE and TECHNOLOGY, 25[9], pp. 673-681 (September 1988).
258235-U  * thermal0.0162Reported by: A. D'Angelo, J.L. Rowlands, Progress in Nuclear Energy, Vol. 41. No. 1-4, pp. 391-412, 2002.
259235-U  * fast0.0163
235-UPhotofission
260235-U150.0096 ± 0.0013Reported by: O. P. Nikotin and K. A. Petrzhak, Soviet At. Energy, 20, 268 (1966).
261235-U8 -1 30.0102 ± 0.0008Reported by: J. T. Caldwell and E. J. Dowdy, Nucl. Sci. Eng., 56, 179 (1975).
262235-U6.670.0090 ± 0.0008Reported by: Caldwell J. T., Dowdy E. J., Nucl. Sci. Eng., 1975, v. 56, 179.
263235-U7.70.0088 ± 0.0008
264235-U7.810.0113 ± 0.0007
265235-U8.860.0112 ± 0.0008
236-UNeutron induced fission
266236-U1.01 ± 0.100.0218 ± 0.0022Reported by: Piksaikin V.M., Egorov A.S., Mitrofanov K.V., Report INDC(NDS) - 0646, 2013, IAEA, Vienna, Austria.
267236-U3.23 ± 0.150.0233 ± 0.0012
268236-U3.75 ± 0.140.0232 ± 0.0012
269236-U4.20 ± 0.170.0218 ± 0.0011
270236-U4.72 ± 0.210.0220 ± 0.0011
236-UPhotofission
271236-U8 -1 30.0160 ± 0.0013Reported by: J. T. Caldwell and E. J. Dowdy, Nucl. Sci. Eng. 56, 179 (1975).
272236-U6.660.0143 ± 0.0014Reported by: Caldwell J. T., Dowdy E. J. - Nucl. Sci. Eng., 1975, v. 56, 179.
273236-U7.630.0173 ± 0.0012
274236-U8.860.0164 ± 0.0010
238-UNeutron induced fission
275238-U14.0 max0.08 ± 0.03Reported by: K.H.Sun et al., Phys.Rev.,vol.79,3(1950).
276238-U2.70.0463 ± 0.0071Reported by: Brunson G.S. et al., Nucl. Sci. Eng., v.1, p.174 (1956). Adjusted by R.J. Tuttle, 1979.
277238-U30.037 ± 0.0040.0386 ± 0.0052Reported by: H. Rose and R. D. Smith, J. Nucl. Energy vol.1, 4, 133 (1957). Adjusted by R.J. Tuttle, 1979.
278238-U30.037 ± 0.0040.0367 ± 0.0025Reported by: H. Rose and R. D. Smith, J. Nucl. Energy vol.1, 4, 133 (1957). Adjusted by: Cox, 1974.
279238-U3.010.0412 ± 0.00170.0421 ± 0.0043Reported by: G. R. Keepin, T. F. Wimett, and R. K. Zeigler, J. Nucl. Energy, 6, 1 (1957); also, Phys. Rev. 107, 1044 (1957). Adjusted by R.J. Tuttle, 1979.
280238-U3.010.0412 ± 0.0025Reported by: Keepin G. R., Wimett T. F., and Zeigler R. K. - Phys. Rev., 1957, v. 107, p. 1044 .Adjusted by: Zamyatnin, 1976.
281238-U3.010.0421 ± 0.0025Reported by: G. R. Keepin,T. F. Wimett , and R. K. Zeigler, J. Nucl. Energy 6, 1, (1957), and Phys. Rev., 107, 1044, 1957. Adjusted by: Cox, 1974.
282238-UThermal(Reference data)0.0173 ± 0.0012Reported by: B.P.Maksyutenko, Soviet At.Energ.,vol.7, 943 (1961) translated from Atom.Energ. Vol.7,474 (1959). Adjusted by R.J. Tuttle, 1979.
283238-U2.40.0426 ± 0.0027
284238-U3.30.0404 ± 0.0031
285238-U150.0752 ± 0.0053
286238-U140.066 ± 0.017Reported by: W.E.McGarry et al., Bull.Am.Phys.Soc.II,vol.5,33 (1960).
287238-U140.022 + 0.0030.0282 ± 0.0040"Herrmann G., "" Delayed fission neutrons"", Proc. Panel. Vienna, IAEA, p. 147, (1968). Adjusted by: R.J. Tuttle, 1979."
288238-U14.70.0261 ± 0.0028Reported by: M.Bucko,Soviet At.Energy, vol.20,187,1966. Adjusted by R.J. Tuttle, 1979.
289238-U3.10.0474 ± 0.0032Reported by: C. F. Masters, et al., Nucl. Sci. Eng. 36, 202, 1969. Adjusted by: Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80.
290238-U14.90.0283 ± 0.0013
291238-U3.10.0484 ± 0.0036Reported by: C. F. Masters, et al., Nucl. Sci. Eng. 36, 202, 1969. Adjusted by: Zamyatnin, 1976.
292238-U14.90.0283 ± 0.00130.0283 ± 0.0013
293238-U3.10.0484 ± 0.0036Reported by: C. F. Masters, M.M. Thrope, and D.B. Smith, Nucl. Sci. Eng. 36, 202, (1969). Adjusted by: Cox, 1974.
294238-U14.90.0283 ± 0.00130.0283 ± 0.0013
295238-U14.10.0327 ± 0.00270.0280 ± 0.0024Reported by: G.R. Keepin (editor), LA-4227-MS, Los Alamos Scientific Laboratory (1969). Adjusted by: R.J.Tuttle, 1979.
296238-U14.90.0332 ± 0.00270.0262 ± 0.0022
297238-U14.90.0332 ± 0.00270.0270 ± 0.0022Reported by: G.R. Keepin (editor), LA-4227-MS, Los Alamos Scientific Laboratory (1969). Adjusted by: Zamyatnin, 1976.
298238-U14.10.0327 ± 0.00270.0271 ± 0.0022Reported by: G.R. Keepin (editor), LA-4227-MS, Los Alamos Scientific Laboratory (1969). Adjusted by: Cox, 1974.
299238-U14.90.0332 ± 0.00270.0255 ± 0.0021
300238-U140.0209 ± 0.0074Reported by:Notea A. Israel Atomic Energy Comm. Rep. IA-1190, 1969, p.95. Adjusted by: R.J. Tuttle, 1979.
301238-U14.80.016 ± 0.005Reported by: Notea A. Israel Atomic Energy Comm. Rep. IA-1190, 1969, p.95. Adjusted by: Zamyatnin, 1976.
302238-U140.016 ± 0.005Reported by: A. Notea, IA-1190, P.95, Israel Atomic Energy Comm. (1969). Adjusted by: Cox, 1974.
303238-U140.0228 + 0.00820.0277 ± 0.0058Reported by: Benedict G. et al., Radiochem. Acta, 1972, Bd 17, #1, S.61. Adjusted by: R.J.Tuttle, 1979.
304238-U14.80.0228 + 0.00820.023 ± 0.004Reported by: Benedict G. et al., Radiochem. Acta, 1972, Bd 17, #1, S.61. Adjusted by: Zamyatnin, 1976.
305238-U14.80.0228 ± 0.00820.0228 ± 0.0082Reported by: G. Benedict, G. Luthardt and G. Herrmann, Radiochim. Acta 17, 1190 (1972). Adjusted by: Cox, 1974.
306238-U1.650.0484 ± 0.0040Reported by: Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80.
307238-U40.0484 ± 0.0045
308238-U4.250.0483 ± 0.0044
309238-U4.50.0474 ± 0.0043
310238-U4.750.0482 ± 0.0044
311238-U5.150.0454 ± 0.0043
312238-U5.350.0453 ± 0.0043
313238-U5.50.0429 ± 0.0041
314238-U5.750.0424 ± 0.0040
315238-U60.0412 ± 0.0041
316238-U6.30.0404 ± 0.0039
317238-U6.50.0395 ± 0.0039
318238-U6.70.0381 ± 0.0038
319238-U6.90.0374 ± 0.0039
320238-U0.9 - 2.40.04060.0436 ± 0.0028Reported by: Cox S.A., Whiting D.E.E. Rep. ANL-7610, 1970, p.45. Adjusted by: R.J. Tuttle, 1979.
321238-U14.80.0182 ± 15%0.0230 ± .0039Reported by:Brown M.G. et al., Radiochem. Acta, 1971, Bd 15, S. 109. Adjusted by: R.J. Tuttle, 1979.
322238-U14.80.024 ± 0.005Reported by:Brown M.G. et al., Radiochem. Acta, 1971, Bd 15, S. 109. Adjusted by: Zamyatnin, 1976.
323238-U2.770.0492 ± 0.005Reported by: CliffordD.A. A compilation and evaluation of experimental data. Rep. AERE-R 6993, 1972. Adjusted by: R.J. Tuttle, 1979
324238-Ufission spectrum0.046 ± 0.003Reported by: D.A. Clifford, as reported by M.H. McTaggart in Fast Integral Assembly Newsletter Nos. 19-22, March 1972, and M.H. McTaggart, AWRE, Aldersmaston, personal communication, June 20, 1972. Adjusted by: Zamyatnin, 1976
325238-U2.770.0492 ± 0.0025Reported by: D.A. Clifford, as reported by M.H. McTaggart in Fast Integral Assembly Newsletter Nos. 19-22, March 1972, and M.H. McTaggart, AWRE, Aldersmaston, personal communication, June 20, 1972. Adjusted by: Cox, 1974
326238-U1.970.0439 ± 0.0026"Reported by: S. A. Cox, ""Delayed Neutron Data - Review and Evaluation,"" ANL/NDM-5, Argonne National Laboratory (1974). Adjusted by: Tuttle, 1979"
327238-U2.980.04347 ± 0.00260
328238-U3.980.04288 ± 0.00260
329238-U1.970.0439 ± 0.0026"Reported by: S. A. Cox, ""Delayed Neutron Data - Review and Evaluation,"" ANL/NDM-5, Argonne National Laboratory (1974). Adjusted by: Cox, 1974"
330238-U2.980.04347 ± 0.00260
331238-U3.980.04288 ± 0.00260
332238-U2.770.0439 ± 0.00170.0445 ± 0.0017Reported by: C. B. Besant, et al., J.Br.Nucl.Energy Soc,vol.16,161 (1977). Adjusted by: Tuttle, 1979
333238-U0.90.0437 ± 0.0030Reported by: Cox S.A., Whiting D.E.E. Rep. ANL-7610, 1970, p.45.
334238-U10.0039 ± 0.0040
335238-U1.10.0400 ± 0.0020
336238-U1.20.0396 ± 0.0020
337238-U1.30.0375 ± 0.0020
338238-U1.40.0396 ± 0.0010
339238-U1.50.0406 ± 0.0010
340238-U1.60.0406 ± 0.0020
341238-U1.760.0406 ± 0.0030
342238-U1.850.0418 ± 0.0025
343238-U2.050.0425 ± 0.0010
344238-U2.240.0412 ± 0.0010
345238-U2.430.0425 ± 0.0025
346238-U1.01 ± 0.100.0381 ± 0.0018Reported by: V.M. Piksaikin et al. Delayed Neutron Yield From Fast Neutron Induced Fission of U-238. Issues of Atomic Science and Technology. Nuclear constants. SSC RF-IPPE, Obninsk, No. 1, pp. 80-86., 2001; V.M. Piksaikin et al. Experimental Studies of the Absolute Total Delayed Neutron Yields From Neutron Induced Fission of U-238 in the Energy Range 1-5 MeV. Progress in Nuclear Energy, 2002, v.41, 1-4, pp.135-144.
347238-U3.23 ± 0.150.0462 ± 0.0025
348238-U3.75 ± 0.140.0465 ± 0.0012
349238-U4.20 ± 0.170.0462 ± 0.0020
350238-U4.72 ± 0.210.0463 ± 0.0012
351238-U4.94 ± 0.200.0467 ± 0.0023
352238-Ufast0.0460 ± 0.0025Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer. Delayed neutron yields: Time dependent measurements and a predictive model. Phys. Rev. C, V. 23, No. 3, 1981.
353238-Ufast0.0465Reported by: A. D'Angelo, J.L. Rowlands. Conclusions concerning the delayed neutron data for the major actinides. Progress in Nuclear Energy, Vol. 41. No. 1-4, pp. 391-412, 2002.
354238-U  * less than 4.00.0460 ± 0.0025"Reported by: S. A. Cox, ""Delayed Neutron Data - Review and Evaluation,"" ANL/NDM-5, Argonne National Laboratory (1974)."
355238-U  * 4.0-8.00.0360 ± 0.0025
356238-U  * 8.0-20.00.026 ± 0.002
357238-U  * fast0.0439 ± 0.0010Reported by: R.J. Tuttle. Delayed-neutron yields in nuclear fission. Procedings of the consultants' meeting on delayed neutron properties, Vienna, 26-30 March 1979. INDC(NDS)-107/G+Special. pp. 29-67, 1979
358238-U  * fast0.0465Reported by: A. D'Angelo, J.L. Rowlands. Conclusions concerning the delayed neutron data for the major actinides. Progress in Nuclear Energy, Vol. 41. No. 1-4, pp. 391-412, 2002.
238-UPhotofission
359238-U12. 200.036 ± 0.008Reported by: G. Moscati and J. Goldemberg, Phys. Rev. 126_, 1098 (1962). Adjusted by Tuttle, 1979
360238-U120.036 ± 0.008Reported by: G. Moscati and J. Goldemberg, Phys. Rev., 1962, v. 126, p. 1098.; Adjusted by Zamyatnin, 1976
361238-U150.031 ± 0.004Reported by: O. P. Nikotin and K. A. Petrzhak, Soviet At. Energy, V.20, No.3, 268 (1966).; Adjusted by: Tuttle, 1979
362238-U150.031 ± 0.004Reported by: O.P.Nikotin, K.A. Petrzhak - Atomic Energy, 1966, v.20, No. 3, p.268.; Adjusted by: Zamyatnin, 1976
363238-U8-1 20.0291 ± 0.00090.0291 ± 0.0009"Reported by: J. T. Caldwell, E. J. Dowdy, and G. M. Worth, ""Physics and Chemistry of Fission 1973,"" Vol. I, p 431, IAEA, Vienna (1974). Adjusted by: Tuttle, 1979"
364238-U8-1 30.0291 ± 0.00200.0291 ± 0.0020Reported by: J.T.Caldwell et al., Report LA-UR-74-1208, Los Alamos Scientific Laboratory (1974).; Adjusted by: Tuttle, 1979
365238-U6.530.0306 ± 0.0024Reported by: Caldwell J. T., Dowdy E. J. - Nucl. Sci. Eng., 1975, v. 56, 179.; Adjusted by: Zamyatnin, 1976
366238-U7.540.0276 ± 0.0017
367238-U7.660.0306 ± 0.0014
368238-U8.880.0275 ± 0.0019
238-UCharged - Particle induced fission
369238-U21.4 (He-3)0.012 ± .0020.012 ± .003Reported by: E. T. Chulick and P. l. Reeder, Nucl. Phys. , A173, 497 (1971). Adjusted by: Tuttle, 1979
370238-U23.3 (He-3)0.013 ± .0020.013 ± .003
371238-U28.7 (He-3)0.016 ± .0030.016 ± .004
372238-U33.8 (He-3)0.007 ± .0010.007 ± .002
373238-U19.8 (He-4)0.030 ± .0030.030 ± .004
374238-U24.5 (He-4)0.0086 ± .00070.0086 ± .0008
375238-U28.6 (He-4)0.014 ± .0020.014 ± .003
237-NpNeutron induced fission
376237-Np1.1540.001141 ± 0.00054Reported by: V.M. Piksaikin, Ju. F. Balakshev, S.G. Isaev, L.E. Kazakov, G.G. Korolev, B.D. Kuzminov, N.N. Sergachev, M.Z. Tarasko. Measurements of periods, relative abundances and absolute total yields of delayed neutrons from fast neutron induced fission of 235U and 237Np. Conf. Proc. Vol. 59. Nucl. Data for Science and Technology, Bologna, 1997, pp. 485-487.
377237-Np0.340.01021 ± 0.00020Reported by: V.M. Piksaikin et al., Feature of the energy dependence of the total delayed neutron yields for fast neutron induced fission of U-235 and Np-237, Yad. Fiz.(in Russian), v.62, No.6, pp.1-9, 1999. Numerical data in: A.D'Angelo, Overview of the delayed neutron data activities and results monitored by NEA/WPEC subgroup 6, Progress in Nuclear Energy, v.41, No.1-4, pp.5-31, 2002.
378237-Np0.590.00992 ± 0.00035
379237-Np0.810.01053 ± 0.00021
380237-Np1.010.01141 ± 0.00025
381237-Np3.230.01006 ± 0.00022
382237-Np3.740.00948 ± 0.00019
383237-Np4.20.00926 ± 0.00019
384237-Np4.720.00897 ± 0.00018
385237-Np1.50.0087D. Dore et al., 237Np absolute delayed neutron yield measurements. EPJ Web of Conferences 146, 04029 (2017)
386237-Np1.9640.0089
387237-Np2.9580.0094
388237-Np4.190.0075
389237-Np4.9830.0079
390237-Np5.990.0091
391237-Np70.0074
392237-Np100.0074
393237-Np160.0038
394237-Npfast (=144 keV)0.0129 ± 0.0004Reported by: H.H. Saleh et al., Measurements of delayed neutron constants and fission yields from 235U, 237Np, 241Am, 243Am. Nuclear Science and Engeneering, vol. 125, No 1, pp. 51-60.
395237-Npthermal0.0125 ± 0.0011Reported by: S.B. Borzakov. Physics of Atomic Nuclei, Vol. 63, No. 4, 2000, pp. 589-597.
396237-Np1.30.0126 ± 0.0007
397237-Npfast (=144 keV)0.0114 ± 0.0007Reported by: W.S. Charlton, T.A. Parish, S. Raman, N.Shinohara, M. Andoh. Delayed neutron emission measurements from fast fission of U-235, Np-237, Am-243. Conf. Proc. Vol. 59. Nucl. Data for Science and Technology, Bologna, 1997, pp. 491-493.
398237-Np1.1540.01212 ± 0.00057Absolute valueReported by: V.M. Piksaikin, Ju. F. Balakshev, S.G. Isaev, L.E. Kazakov, G.G. Korolev, B.D. Kuzminov, N.N. Sergachev, M.Z. Tarasko. Measurements of periods, relative abundances and absolute total yields of delayed neutrons from fast neutron induced fission of 235U and 237Np. Conf. Proc. Nucl. Data for Science and Technology, Bologna, 1997, pp. 485-487.
399237-Npfast (En ~ Fission spectrum)0.0126 ± 0.0007Reported by: D. J. Loaiza, G. Brunson, R. Sanchez, K. Butterfield. Measurements of Absolute Delayed Neutron Yield and Group Constants in the Fast Fission of 235U and 237Np. Nuclear Science and Engineering, Vol. 128, No. 3, 1998, pp. 270-277.
400237-Npfast0.0107 ± 0.0010Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer. Delayed neutron yields: Time dependent measurements and a predictive model. Phys. Rev. C, V. 23, No. 3, 1981.
237-NpPhotofission
401237-Np8 -1 30.0047 ± 0.00040.0047 ± 0.0004Reported by: J. T. Caldwell and E. J. Dowdy, Nucl. Sci. Eng. 56, 179 (1975).; Adjusted by: Tuttle, 1979
402237-Np7.680.0038 ± 0.0004Reported by: Caldwell J. T., Dowdy E. J. - Nucl. Sci. Eng., 1975, v. 56, 179.; Adjusted by: Zamyatnin, 1976
403237-Np9.310.0050 ± 0.0004
404237-Np9.920.0054 ± 0.0004
238-PuNeutron induced fission
405238-Pufast0.0046 ± 0.0007Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer. Delayed neutron yields: Time dependent measurements and a predictive model. Phys. Rev. C, V. 23, No. 3, 1981.
239-PuNeutron induced fission
406239-PuThermal0.0076Reported by: R.R. Wilson. Letters to the editor. p 560, 1947; Adjusted by: Tuttle, 1979
407239-PuThermalβ49/β25 = 0.47 ± 0.070.0090 ± 0.0015Reported by: de Hoffmann & Feld, 1947; Adjusted by: R.J. Tuttle, 1979
408239-PuThermal0.00604 ± 0.00068"Reported by: Brunson et al. ""Nucl. Sci. Eng."", 1956, v.1, p.174; Adjusted by: Tuttle, 1979"
409239-Pu0.420.00692 ± 0.00082
410239-Puthermal0.0059 ± 0.0004"Reported by: Brunson et al. ""Nucl. Sci. Eng."", 1956, v.1, p.174; Adjusted by: Zamyatnin, 1976"
411239-Pu10.0070 ± 0.0006Reported by: H. Rose and R. D. Smith, J. Nucl. Energy, vol.1, 4, 133 (1957). Adjusted by: Tuttle, 1979
412239-Pu10.0068 ± 0.0004Reported by: H. Rose and R. D. Smith, J. Nucl. Energy, vol.1, 4, 133 (1957). Adjusted by: Cox, 1974
413239-PuThermal0.0061 ± 0.00030.0061 ± 0.0007Reported by: G. R. Keepin, T. F. Wimett, and R. K. Zeigler, J. Nucl. Energy, 6, 1, (1957), and Phys. Rev., 107, 1044, 1957.; Adjusted by: Tuttle, 1979
414239-Pu1.59 FSCSW0.0063 ± 0.00030.0064 ± 0.0007
415239-PuThermal0.0061 ± 0.0005Reported by: Keepin G. R., Wimett T. F., and Zeigler R. K. - Phys. Rev., 1957, v. 107, p. 1044.; Adjusted by: Zamyatnin, 1976
416239-Pu1.59 FSCSW0.0063 ± 0.0005
417239-Puthermal0.0061 ± 0.0007Reported by: G. R. Keepin,T. F. Wimett , and R. K. Zeigler, J. Nucl. Energy, 6, 1, (1957), and Phys. Rev., 107, 1044, 1957. Adjusted by: Cox, 1974.
418239-Pu1.58 FSCSW0.0064 ± 0.0007
419239-Pu14.50.0130 ± 0.00150.0135 ± 0.0016
420239-Pu3.10.00664 ± 0.00047Reported by: Masters C.F. et al. Nucl. Sci. Eng., v. 36, p.202,1969. Adjusted by: Tuttle, 1979.
421239-Pu14.90.0041 ± 0.00020.0041 ± 0.0002
422239-Pu3.10.0066 ± 0.0005Reported by: C. F. Masters, et al., Nucl. Sci. Eng., 36, 202, 1969.; Revision:Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80., Adjusted by: Zamyatnin, 1976.
423239-Pu14.80.0041 ± 0.0002
424239-Pu3.10.0066 ± 0.0005Reported by: C. F. Masters, M.M. Thrope, and D.B. Smith, Nucl. Sci. Eng., 36, 202, (1969). Adjusted by: Cox, 1974
425239-Pu14.90.0041 ± 0.0002
426239-Pu14.11.13 ± 0.10 (a)0.00424 ± 0.00038Reported by: G.R.Keepin, Rep. LA-4227-MS, Los Alamos scientific laboratory, 1969, p. 17; LA-4320-MC, 1969. Adjusted by Tuttle, 1979
427239-Pu14.91.20 ± 0.11 (a)0.00439 ± 0.00041
428239-Pu14.90.0044 ± 0.0004Reported by: Keepin, Rep. LA-4227-MS, 1969, p. 17; LA-4320-MC, 1969. Adjusted by: Zamyatnin, 1976
429239-Pu14.10.00423 ± 0.00037Reported by: G.R. Keepin (editor), LA-4227-MS, Los Alamos Scientific Laboratory (1969). Adjusted by: Cox, 1974
430239-Pu14.90.00451 ± 0.00041
431239-PuThermal0.0076 ± 0.0032Reported by: Notea A. Israel Atomic Energy Comm. Rep. IA-1190, 1969, p.95. Adjusted by: Tuttle, 1979
432239-Puthermal0.0050 ± 0.0019Reported by: Notea A. Israel Atomic Energy Comm. Rep. IA-1190, 1969, p.95. Adjusted by: Zamyatnin, 1976
433239-Puthermal0.00517 ± 0.00200Reported by: Notea A. Israel Atomic Energy Comm. Rep. IA-1190, 1969, p.95. Adjusted by: Cox, 1974
434239-PuThermalβ=0.0023 ± 0.00030.00661 ± 0.00078Reported by: Conant J.F., Palmedo P.F. Nucl. Sci. Eng., 1971, v.44, p. 173. Adjusted by: Tuttle, 1979
435239-Puthermal0.0066 ± 0.0006Reported by: Conant J.F., Palmedo P.F. Nucl. Sci. Eng., 1971, v.44, p. 173.; Adjusted by: Zamyatnin, 1976
436239-Puthermal0.0066 ± 0.0006Reported by: Conant J.F., Palmeda P.F. Nucl. Sci. Eng., 1971, v.44, p. 173.; Adjusted by: Cox, 1974
437239-Pu0.0 - 1.80.0062 ± 0.00050.0062 ± 0.0005Reported by: Evans A.E., Thorpe M.M., Krick M.S. - Nucl. Sci. Eng., 1973, v. 50, p. 80; Adjusted by: Tuttle, 1979
438239-Pu0.050.0061 ± 0.0005Reported by: Krick M.S. et al., Nucl.Sci.Eng.1972, v.47,p.311, Trans.Amer.Nucl.Soc., 1970,v.13, p.746. Adjusted by: Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80.
439239-Pu0.110.0060 ± 0.0005
440239-Pu0.210.0060 ± 0.0005
441239-Pu0.320.0061 ± 0.0005
442239-Pu0.430.0062 ± 0.0005
443239-Pu0.530.0063 ± 0.0005
444239-Pu0.640.00631 ± 0.00050
445239-Pu0.740.00633 ± 0.00050
446239-Pu0.840.00624 ± 0.00050
447239-Pu0.940.00621 ± 0.00050
448239-Pu1.050.00626 ± 0.00050
449239-Pu1.150.00626 ± 0.00050
450239-Pu1.250.00629 ± 0.00050
451239-Pu1.350.00633 ± 0.00050
452239-Pu1.450.00633 ± 0.00050
453239-Pu1.550.00624 ± 0.00050
454239-Pu1.650.00621 ± 0.00050
455239-Pu1.750.00626 ± 0.00050
456239-Pu0.960.00674 ± 0.000430.00674 ± 0.00043"Reported by: S. A. Cox, ""Delayed Neutron Data - Review and Evaluation,"" ANL/NDM-5, Argonne National Laboratory (1974); Adjusted by: Tuttle, 1979"
457239-Pu1.970.00669 ± 0.000430.00669 ± 0.00043
458239-Pu2.980.00640 ± 0.000430.00640 ± 0.00043
459239-Pu3.980.00663 ± 0.000430.00663 ± 0.00043
460239-Pu0.960.00674 ± 0.00043"Reported by: S. A. Cox, ""Delayed Neutron Data - Review and Evaluation,"" ANL/NDM-5, Argonne National Laboratory (1974)"
461239-Pu1.970.00669 ± 0.00043
462239-Pu2.980.00640 ± 0.00043
463239-Pu3.980.00663 ± 0.00043
464239-Pu0.740.00598 ± 0.000220.00606 ± 0.00022Reported by: C. B. Besant, et al., J.Br.Nucl.Energy Soc.,vol.16,161 (1977); Adjusted by: Tuttle, 1979
465239-Pu0.34 ± 0.070.00651 ± 0.00020Reported by: Piksaikin V.M., Egorov A.S., Mitrofanov K.V. The absolute total delayed neutron yields, relative abundances and half-life of delayed neutron groups from neutron induced fission of 232Th, 233U, 236U, 239Pu AND 241Am. Report INDC(NDS) - 0646, 2013, IAEA, Vienna, Austria.
466239-Pu0.59 ± 0.080.00645 ± 0.00009
467239-Pu0.81 ± 0.090.00643 ± 0.00001
468239-Pu1.01 ± 0.100.00656 ± 0.00014
469239-Pu3.23 ± 0.150.00712 ± 0.00033
470239-Pu3.75 ± 0.140.00704 ± 0.00017
471239-Pu4.20 ± 0.170.00689 ± 0.00017
472239-Pu4.72 ± 0.210.00668 ± 0.00019
473239-Pu4.90 ± 0.210.00608 ± 0.00009
474239-Puthermal0.0065 ± 0.0005Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer. Delayed neutron yields: Time dependent measurements and a predictive model. Phys. Rev., C, V. 23, No. 3, 1981.
475239-Puthermal0.00668 ± 0.00023Reported by: S.B. Borzakov. Physics of Atomic Nuclei, Vol. 63, No. 4, 2000, pp. 589-597.
476239-Pu  * less than 4.00.00645 ± 0.00040"Reported by: S. A. Cox, ""Delayed Neutron Data - Review and Evaluation,"" ANL/NDM-5, Argonne National Laboratory (1974)"
477239-Pu  * 4.0-7.00.00538 ± 0.00040
478239-Pu  * 7.0-20.00.0043 ± 0.0003
479239-Pu  * thermal0.00628 ± 0.00038Reported by: R.J. Tuttle. Delayed-neutron yields in nuclear fission. Procedings of the consultants' meeting on delayed neutron properties, Vienna, 26-30 March 1979. INDC(NDS)-107/G+Special. pp. 29-67, 1979
480239-Pu  * fast0.00630 ± 0.00016
481239-Pu  * thermal0.0065Reported by: A. D'Angelo, J.L. Rowlands. Conclusions concerning the delayed neutron data for the major actinides. Progress in Nuclear Energy, Vol. 41. No. 1-4, pp. 391-412, 2002.
482239-Pu  * fast0.00651
239-PuPhotofission
483239-Pu150.0036 ± 0.00060.0036 ± 0.0006Reported by: O. P. Nikotin and K. A. Petrzhak, Soviet At. Energy, 20_, 268 (1966). Adjusted by: Tuttle, 1979
484239-Pu200.0036 ± 0.0006Reported by: O.P.Nikotin, K.A. Petrzhak - Atomic Energy, 1966, v.20, No. 3, p.268.
485239-Pu10.2 - 120.00372 ± 0.000130.00372 ± 0.00013Reported by J. T. Caldwell, E. J. Dowdy, and G. M. Worth, Physics and Chemistry of Fission 1973, Vol. I, p 431, IAEA, Vienna (1974). Adjusted by: Tuttle, 1979
486239-Pu10.2 - 130.0037 ± 0.00040.0037 ± 0.0004Reported by: Caldwell J. T., Dowdy E. J. - Nucl. Sci. Eng., 1975, v. 56, 179, Adjusted by: Tuttle, 1979
487239-Pu7.840.0037 ± 0.0004Reported by: Caldwell J. T., Dowdy E. J. - Nucl. Sci. Eng., 1975, v. 56, 179, Adjusted by: Zamyatnin, 1976
488239-Pu9.650.0037 ± 0.0004
240-PuNeutron induced fission
489240-Pu2.13 FSCSW0.0088 ± 0.00060.0092 ± 0.0011Reported by: G. R. Keepin,T. F. Wimett , and R. K. Zeigler, J. Nucl. Energy, 6, 1, (1957), and Phys. Rev., 107, 1044, 1957; Adjusted by: Tuttle, 1979
490240-Pu2.13 FSCSW0.0088 ± 0.0009Reported by: G. R. Keepin,T. F. Wimett , and R. K. Zeigler, J. Nucl. Energy, 6, 1, (1957), and Phys. Rev., 107, 1044, 1957; Adjusted by: Zamyatnin 1976
491240-Pu2.13 FSCSW0.0090 ± 0.0009Reported by: G. R. Keepin,T. F. Wimett , and R. K. Zeigler, J. Nucl. Energy, 6, 1, (1957), and Phys. Rev., 107, 1044, 1957; Adjusted by: Cox, 1974
492240-Pu14.11.49 ± 0.13 (a)0.00631 ± 0.00056Reported by: G.R.Keepin, Rep. LA-4227-MS, Los Alamos scientific laboratory, 1969, p. 17; LA-4320-MC, 1969; Adjusted by: R.J.Tuttle, 1979.
493240-Pu14.91.42 ± 0.12 (a)0.00597 ± 0.00051
494240-Pu14.90.0057 ± 0.0005Reported by: G.R. Keepin (editor), LA-4227-MS, Los Alamos Scientific Laboratory (1969);
495240-Pu14.10.0063 ± 0.0009
496240-Pu14.90.0060 ± 0.0009
497240-Pufast0.0090 ± 0.0009Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer. Delayed neutron yields: Time dependent measurements and a predictive model. Phys. Rev., C, V. 23, No. 3, 1981.
498240-Pu  * less than 4.00.0090 ± 0.0009"Reported by: S. A. Cox, ""Delayed Neutron Data - Review and Evaluation,"" ANL/NDM-5, Argonne National Laboratory (1974.)"
499240-Pu  * 4.0-7.00.00758 ± 0.00090
500240-Pu  * 7.0-20.00.00615 ± 0.00060
501240-Pu  * fast(0.0095 ± 0.0008)Reported by: R.J. Tuttle. Delayed-neutron yields in nuclear fission. Procedings of the consultants' meeting on delayed neutron properties, Vienna, 26-30 March 1979. INDC(NDS)-107/G+Special. pp. 29-67, 1979.
241-PuNeutron induced fission
502241-PuThermal0.0154 ± 0.00150.0162 ± 0.0016"Reported by: S. A. Cox, ""Delayed Neutron Data - Review and Evaluation,"" ANL/NDM-5, Argonne National Laboratory (1974.); Adjusted by: R.J. Tuttle., 1979"
503241-Puthermal0.0154 ± 0.0015Reported by: S.A. Cox, Phys. Rev. v.123, 1735 (1961).
504241-Puthermal0.0157 ± 0.0015
505241-Pu14.12.06 ± 0.19 (a)0.00762 ± 0.00071Reported by: G.R.Keepin, Rep. LA-4227-MS, Los Alamos scientific laboratory, 1969, p. 17; LA-4320-MC, 1969. Adjusted by: R.J.Tuttle, 1979
506241-Pu14.91.99 ± 0.18 (a)0.00732 ± 0.00067
507241-Pu14.90.0084 ± 0.0008Reported by: Rep. LA-4227-MS, 1969, p. 17; LA-4320-MC, 1969. Adjusted by: Zamyatnin, 1976
508241-Pu14.10.00853 ± 0.00079Reported by: G.R. Keepin (editor), LA-4227-MS, Los Alamos Scientific Laboratory (1969); Adjusted by: Cox, 1974
509241-Pu14.90.00814 ± 0.00074
510241-Puthermal0.0157 ± 0.0015Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer. Delayed neutron yields: Time dependent measurements and a predictive model. Phys. Rev., C, V. 23, No. 3, 1981.
511241-Pu  * less than 4.00.0157 ± 0.0015"Reported by: S. A. Cox, ""Delayed Neutron Data - Review and Evaluation,"" ANL/NDM-5, Argonne National Laboratory (1974.)"
512241-Pu  * 4.0-7.00.0121 ± 0.0015
513241-Pu  * 7.0-20.00.0084 ± 0.0006
514241-Pu  * thermal(0.0152 ± 0.0011)Reported by: R.J. Tuttle. Delayed-neutron yields in nuclear fission. Procedings of the consultants' meeting on delayed neutron properties, Vienna, 26-30 March 1979. INDC(NDS)-107/G+Special. pp. 29-67, 1979.
515241-Pu  * fast(0.0152 ± 0.0011)
242-PuNeutron induced fission
516242-Pu0.7 - 1.3 (average)0.015 ± 0.0050.015 ± 0.005Reported by: Krick M.S. et al., Nucl.Sci.Eng. 1972 ,v.47,p.311, Trans.Amer.Nucl.Soc.,1970,v.13,p.746. Adjusted by: Evans A.E. et al. Nucl. Sci. Eng., 1973, v. 50, p. 80.
517242-Pu0.640.0151 ± 0.0045
518242-Pu0.840.0149 ± 0.0045
519242-Pu1.050.0153 ± 0.0045
520242-Pu1.250.016 ± 0.005
521242-Pu0.7 - 1.30.015 ± 0.005Reported by: Evans A.E., Thorpe M.M., Krick M.S. - Nucl. Sci. Eng., 1973, v. 50, p. 80.
522242-Pufast0.0186 ± 0.0009Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer. Delayed neutron yields: Time dependent measurements and a predictive model. Phys. Rev., C, V. 23, No. 3, 1981.
523242-Pu  * fast(0.0221 ± 0.0026)Reported by: R.J. Tuttle. Delayed-neutron yields in nuclear fission. Procedings of the consultants' meeting on delayed neutron properties, Vienna, 26-30 March 1979. INDC(NDS)-107/G+Special. pp. 29-67, 1979.
241-AmNeutron induced fission
524241-Am0.860.00330 ± 0.00050Reported by: Piksaikin V.M., Egorov A.S., Mitrofanov K.V. The absolute total delayed neutron yields, relative abundances and half-life of delayed neutron groups from neutron induced fission of 232Th, 233U, 236U, 239Pu AND 241Am. Report INDC(NDS) - 0646, 2013, IAEA, Vienna, Austria.
525241-Am0.960.00360 ± 0.00054
526241-Am1.010.00460 ± 0.00069
527241-Am3.850.00490 ± 0.00074
528241-Am4.850.00540 ± 0.00082
529241-Amfast (=144 keV)0.0049 ± 0.0002Reported by: H.H. Saleh et al., Measurements of delayed neutron constants and fission yields from 235U, 237Np, 241Am, 243Am. Nuclear Science and Engeneering, vol. 125, No 1, pp. 51-60.
530241-Amfast0.0044 ± 0.0005Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer. Delayed neutron yields: Time dependent measurements and a predictive model. Phys. Rev., C, V. 23, No. 3, 1981.
242-AmMNeutron induced fission
531242-AmMthermal0.0069 ± 0.0005
243-AmNeutron induced fission
532243-Amfast (=144 keV)0.0084 ± 0.0004Reported by: H.H. Saleh et al., Measurements of delayed neutron constants and fission yields from 235U, 237Np, 241Am, 243Am. Nuclear Science and Engeneering, vol. 125, No 1, pp. 51-60.
533243-Amfast (=144 keV)0.0086 ± 0.0005Reported by: W.S. Charlton, T.A. Parish, S. Raman, N.Shinohara, M. Andoh. Delayed neutron emission measurements from fast fission of U-235, Np-237, Am-243. Conf. Proc. Vol. 59. Nucl. Data for Science and Technology, Bologna, 1997, pp. 491-493.
245-CmNeutron induced fission
534245-Cmthermal0.0059 ± 0.0004Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer. Delayed neutron yields: Time dependent measurements and a predictive model. Phys. Rev., C, V. 23, No. 3, 1981.
249-CfNeutron induced fission
535249-Cfthermal0.0027 ± 0.0002
252-CfSpontaneous Fission
536252-CfThermal0.0086 ± 0.00100.0086 ± 0.0010Reported by: S.A.Cox, Phys. Rev.,v.123,p.1735(1958); Proc. of 2nd Geneva conferece, v.15,p.392(1958)
537252-CfThermal0.0086 ± 0.0010Reported by: R.W. Waldo, R.A. Karam, R.A. Meyer. Delayed neutron yields: Time dependent measurements and a predictive model. Phys. Rev., C, V. 23, No. 3, 1981.