ENTRY 20052 20190203 22742005200000001 SUBENT 20052001 20190203 22742005200100001 BIB 13 37 2005200100002 TITLE Prompt nu-bar in neutron-induced fission of Pu-239 2005200100003 and Pu-241 2005200100004 AUTHOR (H.Conde,J.Hansen,M.Holmberg) 2005200100005 REFERENCE ((J,JNE,22,53,1968)=(R,FOA4-C-4318-22,1967)) 2005200100006 main reference. 2005200100007 (C,66PARIS,2,51,1966) Only Pu-241 data. 2005200100008 (P,EANDC(OR)-52L,1966) Only Pu-241 data. 2005200100009 INSTITUTE (2SWDFOA) 2005200100010 FACILITY (VDG,2SWDAE ) 5 MeV Van de Graaff for neutrons between 2005200100011 0.5 and 7.5 MeV. 2005200100012 (CCW,2SWDFOA) 300 keV electrostatic accelerator for 2005200100013 14.8 MeV neutrons. 2005200100014 INC-SOURCE (D-T) Deuteron-tritium for 14.8 MeV neutrons. 2005200100015 (D-D) Deuteron-deuterium 2005200100016 (P-T) proton-tritium 2005200100017 (P-LI7) proton-lithium-7 2005200100018 SAMPLE Three similar fission chambers with plane parallel 2005200100019 plates were used. 2005200100020 - One contained a 252Cf sample giving 2005200100021 about 10 spontaneous fissions per second. 2005200100022 - The fission chambers with 239Pu and 24lPu 2005200100023 contained 20 mg of active material deposited on three 2005200100024 platinum plates with a coating thickness of 0.5 mg/cm2.2005200100025 METHOD (COINC) Coincidences between fission fragments and 2005200100026 prompt neutrons to avoid alpha pile up. 2005200100027 (TOF) Time-of-flight to improve the ratio 2005200100028 (induced fission)/(spontaneous fission). 2005200100029 DETECTOR (STANK) Liquid scintillation detector, 2005200100030 cylindrical tank diameter 50 cm, length 50 cm. 2005200100031 MONITOR (98-CF-252(0,F),PR,NU) 2005200100032 ERR-ANALYS (DATA-ERR) Relative error 2005200100033 STATUS (TABLE) Table 2 from J.Nucl.En.,22(1968)53 2005200100034 HISTORY (19710524T) From NEUDADA file 2005200100035 (19800825A) changed to reaction formalism. 2005200100036 (20190203U) SD:Updated to new date formats,lower case. 2005200100037 Small corrections in all Subents. BIB updated. 2005200100038 CORRECTION moved to Subents 002,003. MONIT-REF added. 2005200100039 ENDBIB 37 0 2005200100040 COMMON 1 3 2005200100041 MONIT 2005200100042 PRT/FIS 2005200100043 3.764 2005200100044 ENDCOMMON 3 0 2005200100045 ENDSUBENT 44 0 2005200199999 SUBENT 20052002 20190203 22742005200200001 BIB 5 17 2005200200002 REACTION (94-PU-239(N,F),PR,NU) 2005200200003 SAMPLE (94-PU-239,ENR=0.99) 99.9% Pu-239, 0.1% Pu-240. 2005200200004 PART-DET (PN,FF) Prompt neutrons and fission fragments 2005200200005 in coincidence. 2005200200006 CORRECTION - Spontaneous fissions +0.4% +(8.7 +-0.6)% 2005200200007 - Fission induced by thermal neutrons +0.2% 2005200200008 - Pile-up correction +0.6% 2005200200009 - Different fission neutron spectra -0.2% 2005200200010 - False gates < 0.1% 2005200200011 - Fission foil thickness +0.1% 2005200200012 - Anisotropy of fission neutron emission < 0.1% 2005200200013 - Total correction 1.2% 2005200200014 The magnitudes of the corrections are given for typical2005200200015 measurements at 4 MeV of incident neutron energy 2005200200016 HISTORY (19800825A) 2005200200017 (20190203U) SD: STATUS moved to Subent 002. CORRECTION 2005200200018 added. EN-RSL -> EN-RSL-HW; NO-DIM -> PRT/FIS. 2005200200019 ENDBIB 17 0 2005200200020 NOCOMMON 0 0 2005200200021 DATA 4 5 2005200200022 EN EN-RSL-HW DATA DATA-ERR 2005200200023 MEV MEV PRT/FIS PRT/FIS 2005200200024 4.22 0.02 3.47 0.07 2005200200025 5.91 0.12 3.74 0.07 2005200200026 6.77 0.10 3.94 0.10 2005200200027 7.51 0.09 3.97 0.06 2005200200028 14.8 0.2 4.98 0.09 2005200200029 ENDDATA 7 0 2005200200030 ENDSUBENT 29 0 2005200299999 SUBENT 20052003 20190203 22742005200300001 BIB 5 18 2005200300002 REACTION (94-PU-241(N,F),PR,NU) 2005200300003 SAMPLE (94-PU-241,ENR=0.970) 0.5% Pu-239, 1.2% Pu-240, 2005200300004 97.0% Pu-241, 1.3% Pu-242. 2005200300005 PART-DET (PN,FF) Prompt neutrons and fission fragments 2005200300006 in coincidence. 2005200300007 CORRECTION - Spontaneous fissions +(8.7 +-0.6)% 2005200300008 - Fission induced by thermal neutrons +0.1% 2005200300009 - Pile-up correction +0.5% 2005200300010 - Different fission neutron spectra -0.2% 2005200300011 - False gates < 0.1% 2005200300012 - Fission foil thickness +0.1% 2005200300013 - Anisotropy of fission neutron emission < 0.1% 2005200300014 - Total correction 9.3% 2005200300015 The magnitudes of the corrections are given for typical2005200300016 measurements at 4 MeV of incident neutron energy 2005200300017 HISTORY (19800825A) 2005200300018 (20190203U) SD: STATUS moved to Subent 002. CORRECTION 2005200300019 added. EN-RSL -> EN-RSL-HW; NO-DIM -> PRT/FIS. 2005200300020 ENDBIB 18 0 2005200300021 NOCOMMON 0 0 2005200300022 DATA 4 5 2005200300023 EN EN-RSL-HW DATA DATA-ERR 2005200300024 MEV MEV PRT/FIS PRT/FIS 2005200300025 0.52 0.02 2.89 0.11 2005200300026 2.71 0.01 3.37 0.11 2005200300027 4.19 0.02 3.50 0.10 2005200300028 5.88 0.12 3.84 0.12 2005200300029 14.8 0.2 5.02 0.14 2005200300030 ENDDATA 7 0 2005200300031 ENDSUBENT 30 0 2005200399999 ENDENTRY 3 0 2005299999999