ENTRY 32606 20100907 31473260600000001 SUBENT 32606001 20100907 31473260600100001 BIB 15 38 3260600100002 TITLE The variation of average prompt neutron number 3260600100003 for U-238 fission in the fast neutron energy region 3260600100004 with incident neutron energy 3260600100005 AUTHOR (Bao Zongyu) 3260600100006 INSTITUTE (3CPRAEP) 3260600100007 REFERENCE (J,CST,9,(4),362,197511) in Chinese 3260600100008 SAMPLE Natural uranium electroplating on the both sides of 3260600100009 aluminum foil, thickness of U-238 about 1 mg/cm2. 3260600100010 FACILITY (VDG,3CPRAEP) 2.5 MeV Van de Graaff accelerator 3260600100011 INC-SOURCE (P-LI7) 3260600100012 (P-T) 3260600100013 (D-D) 3260600100014 DETECTOR (STANK,IOCH) A diameter 60 cm loaded cadmium liquid 3260600100015 scintillator tank used for fission neutron detection. 3260600100016 A ionization chamber contained 28 U-238 sample foils 3260600100017 used for fission fragments detection, the distance 3260600100018 between the foil is 0.4 cm. 3260600100019 MONITOR (94-PU-240(0,F),PR,NU) 3260600100020 MONIT-REF (,Bao Zongyu,J,CST,9,(4),285,197511) 3260600100021 PART-DET (PN) 3260600100022 CORRECTION Corrections applied for 3260600100023 sample position 3260600100024 spontaneous fission of U-238 3260600100025 secondary neutron spectrum 3260600100026 dead time 3260600100027 isotropy of secondary neutron spectrum 3260600100028 incident neutron spectrum 3260600100029 ERR-ANALYS Main error sources were as follows: 3260600100030 (ERR-S) 1.0% statistical 3260600100031 (ERR-1) 0.6% due to correction for incident neutron 3260600100032 spectrum 3260600100033 (ERR-2) 1.0% normalization of every measurement value 3260600100034 (ERR-3) 0.6% electronic circuit instability 3260600100035 in general, the total error was about 2% 3260600100036 STATUS (TABLE) Data taken from Table 2 of Chinese J. of 3260600100037 At. Energy Sci. Technol., 9(4),362,1975 3260600100038 HISTORY (19930602C) Compiled by Liang Qichang (CNDC) 3260600100039 (20100907A) SD:Updated to new date formats,lower case. 3260600100040 ENDBIB 38 0 3260600100041 COMMON 4 3 3260600100042 ERR-S ERR-1 ERR-2 ERR-3 3260600100043 PER-CENT PER-CENT PER-CENT PER-CENT 3260600100044 1. 0.6 1. 0.6 3260600100045 ENDCOMMON 3 0 3260600100046 ENDSUBENT 45 0 3260600199999 SUBENT 32606002 20100907 31473260600200001 BIB 1 1 3260600200002 REACTION (92-U-238(N,F),PR,NU) 3260600200003 ENDBIB 1 0 3260600200004 COMMON 2 3 3260600200005 MONIT MONIT-ERR 3260600200006 PRT/FIS PRT/FIS 3260600200007 2.138 0.034 3260600200008 ENDCOMMON 3 0 3260600200009 DATA 3 10 3260600200010 EN DATA ERR-T 3260600200011 MEV PRT/FIS PRT/FIS 3260600200012 1.22 2.421 0.099 3260600200013 1.41 2.444 0.042 3260600200014 1.62 2.488 0.081 3260600200015 4.00 2.846 0.062 3260600200016 4.14 2.905 0.043 3260600200017 4.48 2.946 0.060 3260600200018 4.66 2.940 0.048 3260600200019 4.94 3.017 0.072 3260600200020 5.08 3.024 0.043 3260600200021 5.50 3.055 0.047 3260600200022 ENDDATA 12 0 3260600200023 ENDSUBENT 22 0 3260600299999 ENDENTRY 2 0 3260699999999