ENTRY 30511 20211108 32033051100000001
SUBENT 30511001 20211108 32033051100100001
BIB 13 42 3051100100002
INSTITUTE (3INDTRM) 3051100100003
REFERENCE (J,PR/C,19,1827,1979) Final results 3051100100004
(P,BARC-872,101,1976) Same r-values,other normalization3051100100005
(P,BARC-821,183,1975) Fewer fission products 3051100100006
(P,BARC-690,132,1973) Superseded 3051100100007
(C,75CALCUTTA,2,138,1975) Data on graphs. 3051100100008
AUTHOR (S.B.Manohar, P.P.Venkatesan, S.M.Deshmukh, 3051100100009
Satya Prakash, M.V.Ramaniah) 3051100100010
TITLE Mass distribution in the neutron induced fission of 3051100100011
232U 3051100100012
FACILITY (REAC,3INDTRM) CIRUS reactor 3051100100013
INC-SPECT Cd-cutoff ratio for 232U(n,f) = 0.5 approximately 3051100100014
SAMPLE (92-U-232,ENR=0.9914) Isotopic composition in percent =3051100100015
232U 99.14 3051100100016
233U 0.85 3051100100017
234U 0.004 3051100100018
targets (10micrograms) were prepared by electrodeposi- 3051100100019
tion and wrapped in 2.5 mm superpure Al-foil. 3051100100020
METHOD - The relative 'r-value' method was applied, starting 3051100100021
from the respective 235U fission yields with 99Mo 3051100100022
as internal standard. 3051100100023
(REC) The fission fragments were collected by the 3051100100024
'thin target-recoil-catcher technique'. 3051100100025
(CHSEP) For low yield products radiochemical methods 3051100100026
were used. 3051100100027
High yield products were measured by gamma-spectrometry3051100100028
DETECTOR (GELI). For high yield products. 3051100100029
(PROPC) End window gas flow proportional counter for 3051100100030
low yield products. 3051100100031
ANALYSIS 235U targets (2 micrograms) were irradiated together 3051100100032
with the 232U targets. activities of the 235U fission 3051100100033
products were measured in the same way as those of 3051100100034
232U. 3051100100035
The 235U fission product yields were taken from the 3051100100036
compilation of meek+rider. 3051100100037
MONIT-REF (,M.E.Meek+,R,NEDO-12154-1,1974) 3051100100038
STATUS (TABLE) Data from table 1 of Phys.Rev. C, 19, 1827. 3051100100039
HISTORY (19790921C) TL. 3051100100040
(20040311U) SD: corrected 4-dig. year and lower cases. 3051100100041
(20211018A) VS. Reference 75CALCUTTA,,138,1975 added. 3051100100042
Incident spectrum corrected. MONITOR->ANALYSIS in 001.3051100100043
SF8 and ERR-ANALYS corrected in 002. 3051100100044
ENDBIB 42 0 3051100100045
COMMON 1 3 3051100100046
EN-MIN 3051100100047
EV 3051100100048
0.55 3051100100049
ENDCOMMON 3 0 3051100100050
ENDSUBENT 49 0 3051100199999
SUBENT 30511002 20211108 32033051100200001
BIB 6 21 3051100200002
REACTION (92-U-232(N,F)ELEM/MASS,CUM,FY,,EPI) 3051100200003
MONITOR (92-U-232(N,F)42-MO-99,CUM,FY,,EPI) Assumed to be equal3051100200004
to the 99Mo yield from 235U. 3051100200005
MISC-COL (MISC) 'R'-value, R= A(99,5)*A(P,2)/A(99,2)*A(P,5) 3051100200006
where A(99,2),A(99,5)...activities of 99Mo as 3051100200007
fission product from 232U, 235U respectively, and 3051100200008
A(P,2),A(P,5) ... activities of product 'p' 3051100200009
from the fission of 232U,235U respectively. 3051100200010
CORRECTION A correction (2-5 percent) was applied for the 3051100200011
contribution from u-233 fissions. 3051100200012
The 'raw' yield data obtained from the r-values were 3051100200013
complemented with the missing yields by interpolation. 3051100200014
each wing of the mass distribution was then normalized 3051100200015
to sum up to 100 percent. 3051100200016
ERR-ANALYS (ERR-T) The total uncertainty determined from: 3051100200017
gamma counting statistics 2-3%; 3051100200018
compton subtraction 2-3%; 3051100200019
beta counting statistics 5-7%; 3051100200020
(ERR-1) chemical yield,self-absorpt 3%; 3051100200021
(ERR-2,1.,10.) u-235 evaluated yield data 1-10%. 3051100200022
HISTORY (20211018A) VS. SF8: SPA->EPI. ERR-ANALYS corrected. 3051100200023
ENDBIB 21 0 3051100200024
COMMON 2 3 3051100200025
MONIT ERR-1 3051100200026
PC/FIS PER-CENT 3051100200027
6.1400E+00 3. 3051100200028
ENDCOMMON 3 0 3051100200029
DATA 6 20 3051100200030
ELEMENT MASS DATA ERR-T MISC MISC-ERR 3051100200031
NO-DIM NO-DIM PC/FIS PC/FIS NO-DIM NO-DIM 3051100200032
38. 89. 6.01 0.12 1.939 0.040 3051100200033
38. 91. 7.12 0.20 1.855 0.052 3051100200034
40. 95. 6.30 0.06 1.490 0.014 3051100200035
40. 97. 4.94 0.06 1.263 0.017 3051100200036
42. 99. 4.15 1.000 3051100200037
44. 103. 1.10 0.02 0.522 0.010 3051100200038
44. 105. 0.24 0.03 0.360 0.040 3051100200039
47. 111. 0.009 0.0006 0.758 0.048 3051100200040
48. 115. 0.017 0.0008 2.420 0.014 3051100200041
50. 121. 0.008 0.0007 0.940 0.080 3051100200042
50. 125. 0.092 0.003 5.600 0.020 3051100200043
51. 127. 0.358 0.018 5.733 0.022 3051100200044
53. 131. 3.82 0.03 2.030 0.016 3051100200045
53. 132. 4.69 0.10 1.717 0.037 3051100200046
54. 133. 5.64 0.05 1.260 0.010 3051100200047
54. 135. 5.24 0.08 1.250 0.036 3051100200048
56. 140. 7.08 0.11 1.718 0.028 3051100200049
58. 141. 7.12 0.44 1.865 0.010 3051100200050
58. 143. 5.28 0.32 1.353 0.083 3051100200051
60. 147. 1.39 0.03 0.917 0.022 3051100200052
ENDDATA 22 0 3051100200053
ENDSUBENT 52 0 3051100299999
ENDENTRY 2 0 3051199999999