ENTRY 41254 20241212 422141254000 1
SUBENT 41254001 20241212 422141254001 1
BIB 12 31 41254001 2
TITLE Nu-bar, mean number of neutrons produced in fission of41254001 3
U238 by of 14-MeV neutrons 41254001 4
AUTHOR (N.N.Flerov,E.A.Tamanov) 41254001 5
REFERENCE (J,SJA,5,1596,1959) English translation 41254001 6
(J,AE,5,654,1958) Issue 6. Main reference 41254001 7
(J,JNE/A,11,171,1960) English translation 41254001 8
INSTITUTE (4RUSKUR) 41254001 9
EXP-YEAR (1955) 41254001 10
FACILITY (VDG) Ion accelerating tube 41254001 11
DETECTOR (BF3) Battery of six B-F3 counters, B-10 enrichment 41254001 12
is 71.6 % 41254001 13
METHOD (COINC) Two-fold coincidence between neutrons 41254001 14
emitted during a single fission event. 41254001 15
SAMPLE .Spherical samples of natural uranium (6.4 cm diameter)41254001 16
or lead (8.5 cm diameter) placed in the center 41254001 17
of water cube 41254001 18
CORRECTION .Corrections were introduced on coincidence background41254001 19
on the whole assembly background, on the spontaneous 41254001 20
fission of U-238, on U-238 fission due to scattered 41254001 21
neutrons 41254001 22
ERR-ANALYS (DATA-ERR) Type of uncertainty is not explained in the 41254001 23
article. 41254001 24
HISTORY (19830816C) ! ! Compiled at NNDC 41254001 25
(19970620T) + + Converted at the center - CJD 41254001 26
(19970724U) * * Institute code corrected 41254001 27
(20000125U) . . Corrected at CJD 41254001 28
(20000125U) Last checking has been done. 41254001 29
(20050827U) Correction according to Memo CP-E/70 41254001 30
(20070420U) References year was corrected. M.M. 41254001 31
(20241212U) M.M. Upper -> lower case correction. 41254001 32
STATUS information was updated. 41254001 33
ENDBIB 31 0 41254001 34
COMMON 1 3 41254001 35
EN 41254001 36
EV 41254001 37
1.4E+07 41254001 38
ENDCOMMON 3 0 41254001 39
ENDSUBENT 38 0 4125400199999
SUBENT 41254002 20241212 422141254002 1
BIB 9 21 41254002 2
REACTION (92-U-238(N,F),PR,NU) 41254002 3
MONITOR (82-PB-0(N,2N),,SIG) 41254002 4
MONIT-REF (40425001,N.N.Flerov+,J,AE,5,657,195811) 41254002 5
ANALYSIS See formula (6) in the article. 41254002 6
ASSUMED (ASSUM1,82-PB-0(N,INL)82-PB-0,,SIG) 41254002 7
(ASSUM2,92-U-238(N,F),,SIG) 41254002 8
(ASSUM3,92-U-238(N,INL)92-U-238,,SIG) 41254002 9
SIG(n,2n) = SIGinl - SIGfis was assumed. 41254002 10
CORRECTION For effect from inelastic interactions. 41254002 11
For binomial distribution of NU - 3.5 - 5 %. 41254002 12
REL-REF (R,,N.N.Flerov+,J,AE,4,155,1956) 41254002 13
(R,,N.N.Flerov+,J,AE,5,657,1958) 41254002 14
(R,41254003,N.N.Flerov+,J,AE,5,654,1958) 41254002 15
(A,40806005,N.N.Flerov+,J,AE,5,653,1958) 41254002 16
Previous measurement by different 41254002 17
method at 1954 year - 4.50+-0.32 n/fis. 41254002 18
(A,,S.Blaize+,S,TID-7547,1957) =C,57COLUMBIA,,,1957 41254002 19
STATUS (TABLE,,N.N.Flerov+,J,SJA,5,1596,1959) Text page 1599 41254002 20
HISTORY (19970620T) * * Converted from Subent 80390002 41254002 21
(20000125U) . . Correlation established 41254002 22
(20000125U) Last checking has been done. 41254002 23
ENDBIB 21 0 41254002 24
COMMON 6 3 41254002 25
ASSUM1 ASSUM1-ERR ASSUM2 ASSUM2-ERR ASSUM3 ASSUM3-ERR 41254002 26
B B B B B B 41254002 27
2.54 0.05 1.13 0.05 2.85 0.10 41254002 28
ENDCOMMON 3 0 41254002 29
DATA 4 1 41254002 30
DATA DATA-ERR MONIT MONIT-ERR 41254002 31
PRT/FIS PRT/FIS B B 41254002 32
4.45 0.35 2.3 0.19 41254002 33
ENDDATA 3 0 41254002 34
ENDSUBENT 33 0 4125400299999
SUBENT 41254003 20241212 422141254003 1
BIB 4 5 41254003 2
REACTION (92-U-238(N,INL)92-U-238,,SIG,,,DERIV) 41254003 3
ANALYSIS Extrapolation of data from AE, vol.1,n.4, p.155,1956 41254003 4
STATUS (TABLE,,N.N.Flerov+,J,SJA,5,1596,1959) Text page 1599 41254003 5
HISTORY (20000125C) Compiled at CJD 41254003 6
(20241212A) EVAL -> DERIV 41254003 7
ENDBIB 5 0 41254003 8
NOCOMMON 0 0 41254003 9
DATA 2 1 41254003 10
DATA DATA-ERR 41254003 11
B B 41254003 12
2.85 0.10 41254003 13
ENDDATA 3 0 41254003 14
ENDSUBENT 13 0 4125400399999
ENDENTRY 3 0 4125499999999