ENTRY 23178 20110103 22302317800000001
SUBENT 23178001 20110103 22302317800100001
BIB 17 52 2317800100002
AUTHOR (F.Carrel,M.Agelou,M.Gmar,F.Laine,J.Loridon,J.-L.Ma, 2317800100003
C.Passard, B.Poumarede) 2317800100004
TITLE New experimental results on the cumulative yields from 2317800100005
thermal fission of U-235 and Pu-239 and from 2317800100006
photofission of U-235 and U-238 induced by 2317800100007
bremsstrahlung. 2317800100008
REFERENCE (J,IRE,58,(4),2064,2011) Main reference. 2317800100009
#doi:10.1109/TNS.2011.2157169 2317800100010
REL-REF (O,M0841001,F.Carrel+,J,IRE,58,(4),2064,2011) 2317800100011
Cumulative yields for photofission of U-235 and U-238 2317800100012
(R,,A.C.Nzuruba,J,NIM/A,424,425,1999) 2317800100013
Pa-234m decay data. 2317800100014
INSTITUTE (2FR CAD) 2317800100015
PART-DET (DN) Delayed neutrons and 2317800100016
(G) delayed gamma-rays. 2317800100017
FACILITY (NGEN,2FR CAD) PROMETHEE facility at CEA Cadarache. 2317800100018
Pulse duration 500 microsec, frequency 50 Hz. 2317800100019
INC-SOURCE (D-T) 2317800100020
INC-SPECT 14-MeV neutrons were moderated by graphite blocks to 2317800100021
obtain thermal flux near sample position. 2317800100022
METHOD (ACTIV) Total irradiation 30 min. 2317800100023
For detection of delayed neutrons - cooling time at the2317800100024
end of each pulse15.46 ms, counting time 4 ms. 2317800100025
For delayed gammas - cooling time 60 s. 2317800100026
SAMPLE U and Pu samples in metallic form . 2317800100027
DETECTOR (HE3SP) 88 He-3 counters - to detect prompt and delayed2317800100028
neutrons. 2317800100029
Delayed neutron efficiency was computed using different2317800100030
methods comparing exp.results (Cf-252,U-235,Pu-239, 2317800100031
prompt neutron efficiencies) and simulated values 2317800100032
(MCNPX). 2317800100033
Simulated value for delayed neutron efficiency 2317800100034
3.96E-2 ( +-0.57%) for U-235 and Pu-239. 2317800100035
(HPGE) Delayed gammas were detected by n-type HPGe 2317800100036
detector Canberra GR 3018, relative efficiency 30%, 2317800100037
diameter 52 mm, length 46 mm, coupled with digital 2317800100038
gamma-ray spectrometer ORTEC DSPECPro. 2317800100039
The absolute gamma efficiencies were determined using 2317800100040
the irradiated samples directly by 1001.0keV gamma-line2317800100041
of Pa-234m,granddaughter of U-238, to be 7.808E-4 with 2317800100042
relative 1 sigma uncertainty 1.51%. 2317800100043
DECAY-DATA (91-PA-234-M,,DG,1001.0,0.00835) 2317800100044
CORRECTION Dead time correction. 2317800100045
ANALYSIS Peak area analysis. Net peak areas were extracted 2317800100046
using Matlab tools developed by authors. 2317800100047
Absolute intensities of delayed gamma-rays were taken 2317800100048
mainly from ENDF/B-VI.8 database 2317800100049
ERR-ANALYS (ERR-1) Uncertainty of delayed neutron efficiency. 2317800100050
(ERR-2) Uncertainty in absolute gamma efficiencies. 2317800100051
(ERR-T,9.,11.) Total uncertainty, includes ERR-1,ERR-2 2317800100052
and statistical uncertainty. 2317800100053
HISTORY (20120104C) M.M. 2317800100054
ENDBIB 52 0 2317800100055
COMMON 3 3 2317800100056
EN-DUMMY ERR-1 ERR-2 2317800100057
EV PER-CENT PER-CENT 2317800100058
0.0253 4. 8. 2317800100059
ENDCOMMON 3 0 2317800100060
ENDSUBENT 59 0 2317800199999
SUBENT 23178002 20110103 22302317800200001
BIB 4 36 2317800200002
REACTION (92-U-235(N,F)ELEM/MASS,CUM,FY) 2317800200003
Exp. measured cumulative yields. 2317800200004
COMMENT Yields of Kr-88,Rb-88,Sr-91,Nb-92m were measured 2317800200005
after a cooling time 5 hr. 2317800200006
Yields of Sr92 and Sb-130 were measured after 2317800200007
cooling time 31 min. 2317800200008
DECAY-DATA ((1.)36-KR-88,,DG,1529.8) 2317800200009
((2.)36-KR-88,,DG,2392.1) 2317800200010
((3.)37-RB-88,,DG,898.0) 2317800200011
((4.)37-RB-88,,DG,1836.0) 2317800200012
((5.)37-RB-89,,DG,1031.9) 2317800200013
((6.)37-RB-89,,DG,1248.1) 2317800200014
((7.)38-SR-91,,DG,749.8) 2317800200015
((8.)38-SR-91,,DG,1024.3) 2317800200016
((9.)38-SR-92,2.554HR,DG,1383.9) 2317800200017
2.554hr+-36sec was measured in this experiment. 2317800200018
((10.)38-SR-93,,DG,875.8) 2317800200019
((11.)38-SR-94,,DG,1427.6) 2317800200020
((12.)39-Y-94,,DG,918.7) 2317800200021
((13.)39-Y-95,,DG,954.2) 2317800200022
((14.)39-Y-95,,DG,2176.0) 2317800200023
((15.)41-NB-97-M,,DG,743.3) 2317800200024
((16.)51-SB-130,,DG,793.4) 2317800200025
((17.)51-SB-130,,DG,839.4) 2317800200026
((18.)51-SB-131,,DG,943.4) 2317800200027
((19.)52-TE-133-M,,DG,912.7) 2317800200028
((20.)53-I-135,,DG,1038.8) 2317800200029
((21.)53-I-135,,DG,1131.5) 2317800200030
((22.)53-I-135,,DG,1260.4) 2317800200031
((23.)53-I-135,,DG,1678.0) 2317800200032
((24.)53-I-135,,DG,1791.2) 2317800200033
((25.)54-XE-138,,DG,1768.3) 2317800200034
((26.)54-XE-138,,DG,2015.8) 2317800200035
((27.)55-CS-139,,DG,1283.2) 2317800200036
((28.)56-BA-142,,DG,1078.7) 2317800200037
STATUS (TABLE) Table II of J,IRE,58,(4),2064,2011. 2317800200038
ENDBIB 36 0 2317800200039
NOCOMMON 0 0 2317800200040
DATA 5 28 2317800200041
ELEMENT MASS ISOMER DATA DECAY-FLAG 2317800200042
NO-DIM NO-DIM NO-DIM PRD/FIS NO-DIM 2317800200043
36. 88. 3.24E-2 1. 2317800200044
36. 88. 3.36E-2 2. 2317800200045
37. 88. 3.71E-2 3. 2317800200046
37. 88. 3.55E-2 4. 2317800200047
37. 89. 5.65E-2 5. 2317800200048
37. 89. 5.44E-2 6. 2317800200049
38. 91. 5.81E-2 7. 2317800200050
38. 91. 6.04E-2 8. 2317800200051
38. 92. 5.91E-2 9. 2317800200052
38. 93. 7.60E-2 10. 2317800200053
38. 94. 5.61E-2 11. 2317800200054
39. 94. 6.35E-2 12. 2317800200055
39. 95. 7.22E-2 13. 2317800200056
39. 95. 6.08E-2 14. 2317800200057
41. 97. 1. 6.49E-2 15. 2317800200058
51. 130. 0.60E-2 16. 2317800200059
51. 130. 0.59E-2 17. 2317800200060
51. 131. 3.05E-2 18. 2317800200061
52. 133. 1. 3.74E-2 19. 2317800200062
53. 135. 6.41E-2 20. 2317800200063
53. 135. 6.54E-2 21. 2317800200064
53. 135. 6.38E-2 22. 2317800200065
53. 135. 6.29E-2 23. 2317800200066
53. 135. 6.11E-2 24. 2317800200067
54. 130. 6.54E-2 25. 2317800200068
54. 130. 6.37E-2 26. 2317800200069
55. 139. 6.59E-2 27. 2317800200070
56. 142. 5.80E-2 28. 2317800200071
ENDDATA 30 0 2317800200072
ENDSUBENT 71 0 2317800299999
SUBENT 23178003 20110103 22302317800300001
BIB 4 23 2317800300002
REACTION (94-PU-239(N,F)ELEM/MASS,CUM,FY) 2317800300003
Exp. measured cumulative yields. 2317800300004
COMMENT Yields of Sr92 and Sb-130 were measured after 2317800300005
cooling time 31 min. 2317800300006
DECAY-DATA ((1.)36-KR-88,,DG,2392.1) 2317800300007
((2.)37-RB-89,,DG,1031.9) 2317800300008
((3.)37-RB-89,,DG,1248.1) 2317800300009
((4.)38-SR-92,2.554HR,DG,1383.9) 2317800300010
2.554hr+-36sec was measured in this experiment. 2317800300011
((5.)38-SR-93,,DG,875.8) 2317800300012
((6.)38-SR-94,,DG,1427.6) 2317800300013
((7.)39-Y-94,,DG,918.7) 2317800300014
((8.)39-Y-95,,DG,954.2) 2317800300015
((9.)39-Y-95,,DG,2176.0) 2317800300016
((10.)51-SB-130,,DG,793.4) 2317800300017
((11.)51-SB-130,,DG,839.4) 2317800300018
((12.)51-SB-131,,DG,943.4) 2317800300019
((13.)52-TE-133-M,,DG,912.7) 2317800300020
((14.)54-XE-138,,DG,1768.3) 2317800300021
((15.)54-XE-138,,DG,2015.8) 2317800300022
((16.)55-CS-139,,DG,1283.2) 2317800300023
((17.)56-BA-142,,DG,1078.7) 2317800300024
STATUS (TABLE) Table III of J,IRE,58,(4),2064,2011. 2317800300025
ENDBIB 23 0 2317800300026
NOCOMMON 0 0 2317800300027
DATA 5 17 2317800300028
ELEMENT MASS ISOMER DATA DECAY-FLAG 2317800300029
NO-DIM NO-DIM NO-DIM PRD/FIS NO-DIM 2317800300030
36. 88. 1.29E-2 1. 2317800300031
37. 89. 1.93E-2 2. 2317800300032
37. 89. 1.83E-2 3. 2317800300033
38. 92. 2.87E-2 4. 2317800300034
38. 93. 5.30E-2 5. 2317800300035
38. 94. 3.42E-2 6. 2317800300036
39. 94. 4.13E-2 7. 2317800300037
39. 95. 4.86E-2 8. 2317800300038
39. 95. 4.26E-2 9. 2317800300039
51. 130. 1.01E-2 10. 2317800300040
51. 130. 0.92E-2 11. 2317800300041
51. 131. 2.79E-2 12. 2317800300042
52. 133. 1. 4.11E-2 13. 2317800300043
54. 138. 4.84E-2 14. 2317800300044
54. 138. 5.31E-2 15. 2317800300045
55. 139. 7.32E-2 16. 2317800300046
56. 142. 4.46E-2 17. 2317800300047
ENDDATA 19 0 2317800300048
ENDSUBENT 47 0 2317800399999
ENDENTRY 3 0 2317899999999