ENTRY 41111 20221011 42094111100000001
SUBENT 41111001 20221011 42094111100100001
BIB 8 27 4111100100002
TITLE Measurements of the fission cross section ratios 4111100100003
232Th/235U and 234U/235U for 0.13-7.4 MeV neutrons 4111100100004
AUTHOR (B.I.Fursov, E.Yu.Baranov, M.P.Klemyshev, B.F.Samylin, 4111100100005
G.N.Smirenkin, Yu.M.Turchin) 4111100100006
INSTITUTE (4RUSFEI) 4111100100007
REFERENCE (J,SJA,71,827,1991) Engl.translation of AE,71,320,1991 4111100100008
(J,AE,71,320,1991) Issue 4. 4111100100009
(C,88MITO,,141,1988) Prelim.values in table and figs. 4111100100010
FACILITY (VDG,4RUSFEI) Electrostatic accelerators 4111100100011
INC-SOURCE (P-LI7,D-D,P-T) 4111100100012
CORRECTION Corrected for 4111100100013
- energy dependence of fission chamber efficiency 4111100100014
< or = 1.6% 4111100100015
- difference of neutron fluxes through fissile layers 4111100100016
< or = 1.1% 4111100100017
- fissile impurities and neutron inelastic scattering 4111100100018
< or = 0.5 %4111100100019
- neutron background of exp. hall - 0.3-0.7 % 4111100100020
- neutron background from accompanying reactions - 4111100100021
see details in the article. 4111100100022
HISTORY (19921207C) + + Compiled at the centre - CJD + + 4111100100023
(20010311U) Date is corrected. 4CCPFEI -> 4RUSFEI. 4111100100024
(20151002A) M.M. Ref. of Engl.translation was added. 4111100100025
Upper -> lower case correction. 4111100100026
EN-RSL -> EN-RSL-HW. ERR-ANALYS was corrected. 4111100100027
(20221011A) ON+VT. Major rev.in 002+003. 004-005 added.4111100100028
(20221013U) M.M. Correction of free text. 4111100100029
ENDBIB 27 0 4111100100030
NOCOMMON 0 0 4111100100031
ENDSUBENT 30 0 4111100199999
SUBENT 41111002 20221011 42094111100200001
BIB 9 29 4111100200002
REACTION ((90-TH-232(N,F),,SIG)/(92-U-235(N,F),,SIG)) 4111100200003
SAMPLE - 232Th (678 ug, 232Th content 100%) 4111100200004
- 235U (266 ug and 416 ug, 235U content 99.9955%) 4111100200005
(90-TH-232,NAT=1.00) 4111100200006
(92-U-235,ENR=0.999955) 4111100200007
MONITOR ((90-TH-232(N,F),,SIG)/(92-U-235(N,F),,SIG)) 4111100200008
MONIT-REF (41111004,B.I.Fursov+,J,SJA,71,827,1991) 4111100200009
DETECTOR (FISCH) Two double ionization chambers above 0.85 MeV. 4111100200010
FF registration efficiency 98-00 %. 4111100200011
(TRD) Mica detectors below 0.85 MeV 4111100200012
ANALYSIS Ratio measured by Mica detectors was normalized to 4111100200013
the ratio measured by ionization chambers at 0.85 MeV 4111100200014
ERR-ANALYS (ERR-T) Root mean square sum of 4111100200015
(ERR-S,0.5,15.) 4111100200016
Statistical uncertainty 4111100200017
- in a large part of the energy range (0.5-1%) 4111100200018
- in subthreshold region (10-15%) 4111100200019
(MONIT-ERR) Reference values of 232Th/235U ratios(1.8%)4111100200020
(ERR-1,0.3,0.4) Normalization procedure (0.3-0.4%)4111100200021
does not include MONIT-ERR. 4111100200022
(ERR-2,1.2,3.) Uncertainty due to corrections. 4111100200023
Main contributions: 4111100200024
- uncertainty of measurement of background due to 4111100200025
accompanying reactions, (2-3% at 7.4 MeV) 4111100200026
- neutron scattering in subthreshold region (1.2-2%) 4111100200027
STATUS (TABLE) Tables 2 and 3 of J,SJA,71,827,1991 4111100200028
(DEP,41111004) 232Th/235U from absolute measurement 4111100200029
HISTORY (20221011A) ON+VT. DATA: 0.0468 -> 0.0469 at 1.40 MeV; 4111100200030
ERR-ANALYS updated. MONIT-ERR moved to COMMON. 4111100200031
ENDBIB 29 0 4111100200032
COMMON 1 3 4111100200033
MONIT-ERR 4111100200034
PER-CENT 4111100200035
1.8 4111100200036
ENDCOMMON 3 0 4111100200037
DATA 5 67 4111100200038
EN EN-RSL-HW DATA ERR-T MONIT 4111100200039
MEV KEV NO-DIM PER-CENT NO-DIM 4111100200040
0.13 32. 1.3 E-06 12. 4111100200041
0.35 40. 3.7 E-06 15. 4111100200042
0.40 38. 2.4 E-06 13. 4111100200043
0.45 36. 4.3 E-06 14. 4111100200044
0.50 35. 4.6 E-06 13. 4111100200045
0.55 34. 3.6 E-06 15. 4111100200046
0.60 33. 7.7 E-06 11. 4111100200047
0.65 32. 9.5 E-06 12. 4111100200048
0.70 32. 2.3 E-05 9.2 4111100200049
0.75 31. 3.5 E-05 8.4 4111100200050
0.80 31. 1.03E-04 7.1 4111100200051
0.85 31. 1.70E-04 6.8 4111100200052
0.90 30. 4.11E-04 6.4 4111100200053
0.95 30. 7.67E-04 5.8 4111100200054
1.00 31. 1.15E-03 5.5 4111100200055
1.05 32. 1.38E-03 3.8 4111100200056
1.10 33. 1.79E-03 4.4 4111100200057
1.15 33. 2.98E-03 5.0 4111100200058
1.20 33. 4.91E-03 4.2 4111100200059
1.25 34. 9.28E-03 3.7 4111100200060
1.30 34. 0.0214 4.0 4111100200061
1.35 34. 0.0365 3.3 4111100200062
1.40 34. 0.0469 2.9 4111100200063
1.45 35. 0.0539 2.6 4111100200064
1.50 35. 0.0674 2.9 0.0679 4111100200065
1.55 35. 0.0871 2.8 4111100200066
1.60 36. 0.0926 2.4 4111100200067
1.65 36. 0.0823 2.2 4111100200068
1.70 36. 0.0742 2.3 4111100200069
1.80 72. 0.0763 2.4 4111100200070
1.90 71. 0.0926 2.2 4111100200071
2.0 71. 0.0994 2.2 0.0992 4111100200072
2.1 70. 0.106 2.2 4111100200073
2.2 70. 0.113 2.2 4111100200074
2.3 69. 0.102 2.2 4111100200075
2.4 69. 0.0962 2.3 4111100200076
2.5 68. 0.100 2.4 0.0989 4111100200077
2.6 68. 0.102 2.4 4111100200078
2.7 67. 0.107 2.3 4111100200079
2.8 66. 0.112 2.4 4111100200080
2.9 66. 0.117 2.4 4111100200081
3.0 65. 0.118 2.5 0.1199 4111100200082
3.1 66. 0.121 2.6 4111100200083
3.2 66. 0.124 2.6 4111100200084
3.3 66. 0.124 2.7 4111100200085
3.4 66. 0.127 2.8 4111100200086
3.5 66. 0.127 2.9 4111100200087
3.6 67. 0.132 2.9 4111100200088
3.8 228. 0.134 2.8 4111100200089
4.0 167. 0.136 2.6 4111100200090
4.2 156. 0.142 2.7 4111100200091
4.4 138. 0.142 2.6 4111100200092
4.6 130. 0.144 2.7 4111100200093
4.8 116. 0.144 2.8 4111100200094
5.0 110. 0.144 2.8 4111100200095
5.2 105. 0.147 2.8 4111100200096
5.4 103. 0.148 2.9 4111100200097
5.6 102. 0.145 3.0 4111100200098
5.8 130. 0.144 3.2 4111100200099
6.0 126. 0.151 3.3 4111100200100
6.2 122. 0.171 3.5 4111100200101
6.4 118. 0.199 3.7 4111100200102
6.6 117. 0.236 3.7 4111100200103
6.8 117. 0.263 4.0 4111100200104
7.0 118. 0.266 4.1 4111100200105
7.2 120. 0.264 4.4 4111100200106
7.4 122. 0.255 4.8 4111100200107
ENDDATA 69 0 4111100200108
ENDSUBENT 107 0 4111100299999
SUBENT 41111003 20221011 42094111100300001
BIB 8 26 4111100300002
REACTION ((92-U-234(N,F),,SIG)/(92-U-235(N,F),,SIG)) 4111100300003
SAMPLE - 234U (393 ug, 234U content 98.04%) 4111100300004
- 235U (266 ug and 416 ug, 235U content 99.9955%) 4111100300005
(92-U-234,ENR=0.9804) 4111100300006
(92-U-235,ENR=0.999955) 4111100300007
MONITOR ((92-U-234(N,F),,SIG)/(92-U-235(N,F),,SIG)) 4111100300008
MONIT-REF (41111005,B.I.Fursov+,J,SJA,71,827,1991) 4111100300009
DETECTOR (FISCH) Two double ionization chambers 4111100300010
FF registration efficiency 98-00 %. 4111100300011
ERR-ANALYS (ERR-T) Root mean square sum of 4111100300012
(ERR-S,0.3,3.) 4111100300013
Statistical uncertainty 4111100300014
- in a large part of the energy range (0.3-0.8%)4111100300015
- in subthreshold region (1.5-3.%)4111100300016
(MONIT-ERR) Reference values of 234U/235U ratios (1.6%)4111100300017
(ERR-1,0.3,0.4) Normalization procedure (0.3-0.4%)4111100300018
does not include MONIT-ERR. 4111100300019
(ERR-2,1.2,3.) Uncertainty due to corrections. 4111100300020
Main contributions: 4111100300021
- uncertainty of measurement of background due to 4111100300022
accompanying reactions, (2-3% at 7.4 MeV) 4111100300023
- neutron scattering in subthreshold region (1.2-2%) 4111100300024
STATUS (TABLE) Tables 2 and 3 of J,SJA,71,827,1991 4111100300025
(DEP,41111005) 234U/235U from absolute measurement 4111100300026
HISTORY (20221011A) ON+VT. ERR-ANALYS updated. 4111100300027
MONIT-ERR moved to COMMON. 4111100300028
ENDBIB 26 0 4111100300029
COMMON 1 3 4111100300030
MONIT-ERR 4111100300031
PER-CENT 4111100300032
1.6 4111100300033
ENDCOMMON 3 0 4111100300034
DATA 5 71 4111100300035
EN EN-RSL-HW DATA ERR-T MONIT 4111100300036
MEV KEV NO-DIM PER-CENT NO-DIM 4111100300037
0.13 32. 0.0230 3.7 4111100300038
0.17 31. 0.0277 2.9 4111100300039
0.21 29. 0.0382 2.7 4111100300040
0.25 26. 0.0486 2.8 4111100300041
0.30 24. 0.0952 2.5 4111100300042
0.35 40. 0.137 2.3 4111100300043
0.40 38. 0.202 2.2 4111100300044
0.45 36. 0.309 2.1 4111100300045
0.50 35. 0.448 2.0 4111100300046
0.55 34. 0.573 1.9 4111100300047
0.60 33. 0.659 1.9 4111100300048
0.65 32. 0.755 1.9 4111100300049
0.70 32. 0.900 1.9 4111100300050
0.75 31. 1.088 1.8 4111100300051
0.80 31. 1.160 1.7 4111100300052
0.85 31. 1.050 1.7 4111100300053
0.90 30. 0.988 1.7 4111100300054
0.95 30. 0.932 1.7 4111100300055
1.00 31. 0.919 1.7 0.912 4111100300056
1.05 32. 0.933 1.7 4111100300057
1.10 33. 0.972 1.6 4111100300058
1.15 33. 0.976 1.7 4111100300059
1.20 33. 1.001 1.8 4111100300060
1.25 34. 1.002 1.7 4111100300061
1.30 34. 1.022 1.8 4111100300062
1.35 34. 1.059 1.8 4111100300063
1.40 34. 1.059 1.8 4111100300064
1.45 35. 1.067 1.7 4111100300065
1.50 35. 1.107 1.7 1.112 4111100300066
1.55 35. 1.138 1.7 4111100300067
1.60 36. 1.161 1.6 4111100300068
1.65 36. 1.170 1.6 4111100300069
1.70 36. 1.185 1.6 4111100300070
1.80 72. 1.201 1.6 4111100300071
1.90 71. 1.203 1.6 4111100300072
2.0 71. 1.199 1.7 1.192 4111100300073
2.1 70. 1.182 1.7 4111100300074
2.2 70. 1.175 1.6 4111100300075
2.3 69. 1.177 1.7 4111100300076
2.4 69. 1.187 1.7 4111100300077
2.5 68. 1.196 1.7 1.191 4111100300078
2.6 68. 1.204 1.6 4111100300079
2.7 67. 1.219 1.7 4111100300080
2.8 66. 1.233 1.8 4111100300081
2.9 66. 1.239 1.7 4111100300082
3.0 65. 1.240 1.8 1.246 4111100300083
3.1 66. 1.253 1.8 4111100300084
3.2 66. 1.250 1.8 4111100300085
3.3 66. 1.250 2.0 4111100300086
3.4 66. 1.255 2.1 4111100300087
3.5 66. 1.261 2.2 4111100300088
3.6 67. 1.270 2.4 4111100300089
3.8 228. 1.275 2.2 4111100300090
4.0 167. 1.276 2.2 4111100300091
4.2 156. 1.271 2.3 4111100300092
4.4 138. 1.272 2.2 4111100300093
4.6 130. 1.262 2.4 4111100300094
4.8 116. 1.246 2.4 4111100300095
5.0 110. 1.230 2.5 4111100300096
5.2 105. 1.242 2.1 4111100300097
5.4 103. 1.256 2.2 4111100300098
5.6 102. 1.259 2.2 4111100300099
5.8 130. 1.257 2.1 4111100300100
6.0 126. 1.230 2.3 4111100300101
6.2 122. 1.191 2.2 4111100300102
6.4 118. 1.169 2.3 4111100300103
6.6 117. 1.152 2.4 4111100300104
6.8 117. 1.159 2.6 4111100300105
7.0 118. 1.163 2.6 4111100300106
7.2 120. 1.180 2.7 4111100300107
7.4 122. 1.190 2.8 4111100300108
ENDDATA 73 0 4111100300109
ENDSUBENT 108 0 4111100399999
SUBENT 41111004 20221011 42094111100400001
BIB 7 10 4111100400002
REACTION ((90-TH-232(N,F),,SIG)/(92-U-235(N,F),,SIG)) 4111100400003
SAMPLE 232Th (260 ug,232Th content 99.2%+235U content 0.724%),4111100400004
232Th (425 ug,232Th content 99.6%+235U content 0.359%).4111100400005
ANALYSIS Normalized at the thermal field (Cd ratio >20) 4111100400006
DETECTOR (FISCH) Ionization chamber 4111100400007
ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained in the 4111100400008
article. 4111100400009
STATUS (TABLE) Table 2 of J,SJA,71,827,1991 4111100400010
HISTORY (20221011C) ON+VT . MONIT values were transmitted from 4111100400011
Subent .002 4111100400012
ENDBIB 10 0 4111100400013
NOCOMMON 0 0 4111100400014
DATA 3 4 4111100400015
EN DATA DATA-ERR 4111100400016
MEV NO-DIM NO-DIM 4111100400017
1.5 0.0679 0.0014 4111100400018
2.0 0.0992 0.0015 4111100400019
2.5 0.0989 0.0019 4111100400020
3.0 0.1199 0.0020 4111100400021
ENDDATA 6 0 4111100400022
ENDSUBENT 21 0 4111100499999
SUBENT 41111005 20221011 42094111100500001
BIB 7 9 4111100500002
REACTION ((92-U-234(N,F),,SIG)/(92-U-235(N,F),,SIG)) 4111100500003
SAMPLE 234U (110 ug,234U content 93.3%+235U content 6.70%) 4111100500004
ANALYSIS Normalized at the thermal field (Cd ratio >20) 4111100500005
DETECTOR (FISCH) Ionization chamber 4111100500006
ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained in the 4111100500007
article. 4111100500008
STATUS (TABLE) Table 2 of J,SJA,71,827,1991 4111100500009
HISTORY (20221011C) ON+VT . MONIT values were transmitted from 4111100500010
Subent .003 4111100500011
ENDBIB 9 0 4111100500012
NOCOMMON 0 0 4111100500013
DATA 3 5 4111100500014
EN DATA DATA-ERR 4111100500015
MEV NO-DIM PER-CENT 4111100500016
1.0 0.912 0.015 4111100500017
1.5 1.112 0.018 4111100500018
2.0 1.192 0.018 4111100500019
2.5 1.191 0.018 4111100500020
3.0 1.246 0.020 4111100500021
ENDDATA 7 0 4111100500022
ENDSUBENT 21 0 4111100599999
ENDENTRY 5 0 4111199999999