ENTRY 22064 20230209 2206400000001
SUBENT 22064001 20230209 20231011 2206400100001
BIB 10 23 2206400100002
TITLE Mass yields of Am-241 thermal-neutron fission 2206400100003
AUTHOR (H.Nakahara,I.Fujiwara,H.Okamoto,N.Imanishi, 2206400100004
M.Ishibashi,T.Nishi) 2206400100005
REFERENCE (J,JIN,33,3239,1971) 2206400100006
INSTITUTE (2JPNKTO) 2206400100007
FACILITY (REAC,2JPNKTO) Kyoto University reactor. 2206400100008
INC-SOURCE (REAC) Graphite thermal column. 2206400100009
INC-SPECT Thermal neutron spectrum. Thermal neutron flux 2206400100010
2.0E+10 neutrons/cm2 sec. Cadmium ratio for Au 2206400100011
was 5000. 2206400100012
DETECTOR (GELI) A 20 cm3 GeLi detector was used for measuring 2206400100013
the fission product activities. The detector 2206400100014
was calibrated by IAEA standard sources of Am-241, 2206400100015
Co-57, Hg-203, Cs-137, Mn-54, Co-60, Y-88, and by 2206400100016
Ce-141, Cr-51 and K-42 whose absolute disintegration 2206400100017
rates were known. 2206400100018
CORRECTION No details given. 2206400100019
HISTORY (19871109C) N.O. 2206400100020
(19880808U) IF. Small corrections 2206400100021
(19890130U) IF. 2206400100022
(19900829A) S.W. Flag and monitor clarified in Subent 32206400100023
(20230209A) SD: Updated to new date formats,lower case.2206400100024
Corrections in all Subents. Subent 004 added. 2206400100025
ENDBIB 23 0 2206400100026
COMMON 1 3 2206400100027
EN-DUMMY 2206400100028
EV 2206400100029
2.5300E-02 2206400100030
ENDCOMMON 3 0 2206400100031
ENDSUBENT 30 0 2206400199999
SUBENT 22064002 20230209 20231011 2206400200001
BIB 9 35 2206400200002
REACTION (95-AM-241(N,F)ELEM/MASS,CUM,FY,,SPA) 2206400200003
FLAG (1.) Both the Mo and Tc measurements result in yield 2206400200004
values for Mo-99, therefore the value is rather 2206400200005
an averaged value for Mo. 2206400200006
(2.) Sum of the yields for 2 isomers 2206400200007
(3.) Normalized to the yield 3.48% for Ce-143. 2206400200008
DECAY-DATA (42-MO-99,67.HR,DG,140.,.88) 2206400200009
(43-TC-99-M,6.HR,DG,140.,.913) 2206400200010
(47-AG-111-G,7.5D,DG,342.,.06) 2206400200011
(47-AG-113-G,5.3HR,DG,298.,.072) 2206400200012
(48-CD-115-G,2.3D,DG,523.,.24) 2206400200013
(48-CD-117-M,3.4HR,DG,1997.,.219) 2206400200014
(48-CD-117-G,2.4HR,DG,1577.,.163) 2206400200015
(51-SB-127,3.89D,DG,473.,.246) 2206400200016
(51-SB-129-G,4.35HR,DG,813.,.62) 2206400200017
(56-BA-139,83.MIN,DG,166.,.224) 2206400200018
(56-BA-140,12.8D,DG,537.,.236) 2206400200019
(58-CE-141,33.D,DG,145.,.50) 2206400200020
(58-CE-143,33.HR,DG,293.,.426) 2206400200021
(60-ND-147,11.1D,DG,91.,.287) 2206400200022
ASSUMED (ASSUM,95-AM-241(N,F),,SIG,,SPA) Cross section taken 2206400200023
from BNL-325. 2206400200024
METHOD Absolute measurement of fission yields. 2206400200025
(CHSEP) Chemical separation and purification. 2206400200026
SAMPLE Targets were prepared by drying pure Am-241 nitrate 2206400200027
(1/400 Pu-239) on a 5.16 mg/cm2 Al foil, 2206400200028
carefully wrapped. Irradiation times 2 - 10 hours. 2206400200029
A thin Au foil (100 mg/cm2) was used for 2206400200030
monitoring the neutron flux. 2206400200031
ERR-ANALYS (DATA-ERR) The given errors include uncertainties 2206400200032
in the chemical yield determinations, gamma- 2206400200033
counting and in the neutron flux determinations. 2206400200034
STATUS (TABLE) Table 1 of J.Inorg.Nucl.Chem.,33(1971)3239 2206400200035
HISTORY (19880808U) If. Small corrections 2206400200036
(20230209A) SD: BIB updated. MONITOR -> ASSUMED. 2206400200037
ENDBIB 35 0 2206400200038
COMMON 1 3 2206400200039
ASSUM 2206400200040
B 2206400200041
3.13 2206400200042
ENDCOMMON 3 0 2206400200043
DATA 6 12 2206400200044
ELEMENT MASS ISOMER DATA DATA-ERR FLAG 2206400200045
NO-DIM NO-DIM NO-DIM PC/FIS PC/FIS NO-DIM 2206400200046
43. 99. 6.90E+00 2.60E-01 1.2206400200047
47. 111. 1.19E+00 4.00E-02 2206400200048
47. 113. 0. 4.87E-01 1.10E-02 2206400200049
48. 115. 0. 7.50E-02 8.00E-03 2206400200050
48. 117. 8.60E-03 2.10E-03 2.2206400200051
51. 127. 6.60E-01 3.00E-02 2206400200052
51. 129. 1.32E+00 5.00E-02 2206400200053
56. 139. 8.68E+00 2.70E-01 2206400200054
56. 140. 5.63E+00 1.10E-01 2206400200055
58. 141. 6.73E+00 2.2206400200056
58. 143. 3.48E+00 3.2206400200057
60. 147. 1.83E+00 2.2206400200058
ENDDATA 14 0 2206400200059
ENDSUBENT 58 0 2206400299999
SUBENT 22064003 20230209 20231011 2206400300001
BIB 9 42 2206400300002
REACTION (95-AM-241(N,F)ELEM/MASS,CUM,FY,,SPA) 2206400300003
DECAY-DATA (38-SR-91,9.67HR,DG,750.,.29) 2206400300004
(38-SR-92,2.7HR,DG,1383.,.90) 2206400300005
(40-ZR-95,65.D,DG,724.,.49) 2206400300006
(40-ZR-97,17.HR,DG,658.,.98) 2206400300007
(41-NB-97-G,72.MIN,DG,658.,.98) 2206400300008
(44-RU-103,39.5D,DG,498.,.885) 2206400300009
(44-RU-105,4.43HR,DG,726.,.48) 2206400300010
(52-TE-132,77.7HR,DG,228.,.94) 2206400300011
(53-I-131,8.05D,DG,365.,.81) 2206400300012
(53-I-133-G,20.8HR,DG,530.,.94) 2206400300013
(53-I-135,6.7HR,DG,1263.,.34) 2206400300014
(54-XE-135-G,9.2HR,DG,250.,.97) 2206400300015
(55-CS-138-G,32.2MIN,DG,1436.,.73) 2206400300016
(58-CE-141,32.5D,DG,145.,.50) 2206400300017
(58-CE-143,33.HR,DG,293.,.426) 2206400300018
(60-ND-147,11.1D,DG,91.,.287) 2206400300019
MONITOR ((MONIT1)95-AM-241(N,F)42-MO-99,CUM,FY,,SPA) used for 2206400300020
normalization of the light-mass peak, i.E. A = 91 2206400300021
to 105. 2206400300022
((MONIT2)95-AM-241(N,F)56-BA-139,CUM,FY,,SPA) used for 2206400300023
normalization of the heavy-mass peak, i.e. A = 131 to 2206400300024
147. 2206400300025
DECAY-MON (42-MO-99,67.HR,DG,140.,.88) 2206400300026
(43-TC-99-M,6.HR,DG,140.,.913) 2206400300027
(56-BA-139,83.MIN,DG,166.,.224) 2206400300028
METHOD (ACTIV) Determination of relative mass yields by direct2206400300029
gamma-ray spectrometry of several fission products 2206400300030
simultaneously. 2206400300031
SAMPLE Targets were prepared by drying pure (1/400 Pu-239) 2206400300032
Am-241 nitrate (about 900 ug Am-241 in 6 cm2 area) 2206400300033
on a 5.16 mg/cm2 Al foil, placed on a 0.3 mm thick 2206400300034
plastic frame, and with another Al foil used as a 2206400300035
catcher. Irradiation times were between 2 and 60 hr. 2206400300036
ERR-ANALYS (DATA-ERR) The errors given are based on errors due to 2206400300037
gamma-counting and normalization. 2206400300038
STATUS (TABLE) Table 2 of J.Inorg.Nucl.Chem.,33(1971)3239 2206400300039
HISTORY (19880808U) IF. Small corrections 2206400300040
(19890130U) IF. 2206400300041
(19900829A) S.W. Flag and monitor clarified. Isomeric 2206400300042
states added in decay-data. 2206400300043
(20230209U) SD: BIB updated. 2206400300044
ENDBIB 42 0 2206400300045
COMMON 4 3 2206400300046
MONIT1 MONIT1-ERR MONIT2 MONIT2-ERR 2206400300047
PC/FIS PC/FIS PC/FIS PC/FIS 2206400300048
6.90 0.26 8.68 0.27 2206400300049
ENDCOMMON 3 0 2206400300050
DATA 5 15 2206400300051
ELEMENT ELEMENT MASS DATA DATA-ERR 2206400300052
NO-DIM NO-DIM NO-DIM PC/FIS PC/FIS 2206400300053
38. 91. 1.48 0.43 2206400300054
38. 92. 2.09 0.04 2206400300055
40. 95. 4.04 0.21 2206400300056
40. 41. 97. 5.16 0.04 2206400300057
44. 103. 7.65 0.23 2206400300058
44. 105. 6.85 0.29 2206400300059
52. 132. 4.70 0.02 2206400300060
53. 131. 4.01 0.14 2206400300061
53. 133. 7.46 0.30 2206400300062
53. 135. 6.09 0.30 2206400300063
54. 135. 6.80 0.28 2206400300064
55. 138. 8.48 0.48 2206400300065
58. 141. 6.29 0.31 2206400300066
58. 143. 3.48 0.15 2206400300067
60. 147. 1.81 0.20 2206400300068
ENDDATA 17 0 2206400300069
ENDSUBENT 68 0 2206400399999
SUBENT 22064004 20230209 20231011 2206400400001
BIB 5 8 2206400400002
REACTION (95-AM-241(N,F),,NU,,,DERIV) 2206400400003
ANALYSIS nu-bar=242-<AL>-<AH> 2206400400004
ERR-ANALYS (DATA-ERR) The errors given are based on errors due to 2206400400005
gamma-counting and normalization. 2206400400006
STATUS (TABLE) Abstract of J.Inorg.Nucl.Chem.,33(1971)3239 2206400400007
(DEP,22064002) 2206400400008
(DEP,22064003) 2206400400009
HISTORY (20230209C) SD 2206400400010
ENDBIB 8 0 2206400400011
NOCOMMON 0 0 2206400400012
DATA 2 1 2206400400013
DATA DATA-ERR 2206400400014
PRT/FIS PRT/FIS 2206400400015
4.0 0.2 2206400400016
ENDDATA 3 0 2206400400017
ENDSUBENT 16 0 2206400499999
ENDENTRY 4 0 2206499999999