ENTRY 32837 20230914 3283700000001 SUBENT 32837001 20230914 20240316 3283700100001 BIB 11 23 3283700100002 TITLE The (n,2n) cross section, the nonelastic cross 3283700100003 section and the proliferation factor of the Lead with 3283700100004 the moderative method. 3283700100005 AUTHOR (Ruan Jinghui,Yao Jinzhang,Wu Jingxia,Yu Chunying) 3283700100006 INSTITUTE (3CPRAEP) 3283700100007 REFERENCE (J,CST,11,335,1977) 3283700100008 FACILITY (CCW,3CPRAEP) 100 kV Cockcroft-Walton accelerator 3283700100009 SAMPLE The thickness of the lead ball shell is 4 cm, with an 3283700100010 inner diameter of 3 cm and an outer diameter of 7 cm. 3283700100011 DETECTOR (SIBAR) A semiconductor (Au-Si surface barrier) 3283700100012 detector was used to measure the distribution of 3283700100013 thermal neutrons within 50 cm of the thickness of the 3283700100014 paraffin wax layer. The diameter of the effective 3283700100015 area was 2 cm, and the resolution was about 1-2%. 3283700100016 (BF3) 5 BF3 long counters were used beyond 50 cm of 3283700100017 the thickness of the paraffin wax layer. The outer 3283700100018 radius of each BF3 long counter was about 1 cm and 3283700100019 its length was about 5 cm. 3283700100020 INC-SOURCE (D-T) The tritium-titanium (T-Ti) target was about 3283700100021 0.6 mg/cm2 thick. 3283700100022 METHOD Slow down method 3283700100023 STATUS (TABLE) Table 1 of At.En.Sci.Technol.11,335,1977 3283700100024 HISTORY (20230914C) Compiled by Lile Liu (CNDC). 3283700100025 ENDBIB 23 0 3283700100026 NOCOMMON 0 0 3283700100027 ENDSUBENT 26 0 3283700199999 SUBENT 32837002 20230914 20240316 3283700200001 BIB 2 3 3283700200002 REACTION (82-PB-0(N,NON),,SIG) 3283700200003 ERR-ANALYS (DATA-ERR) The main uncertainty from the statistics 3283700200004 of the transmission ratio. 3283700200005 ENDBIB 3 0 3283700200006 NOCOMMON 0 0 3283700200007 DATA 3 1 3283700200008 EN DATA DATA-ERR 3283700200009 MEV B B 3283700200010 14. 2.6 0.1 3283700200011 ENDDATA 3 0 3283700200012 ENDSUBENT 11 0 3283700299999 SUBENT 32837003 20230914 20240316 3283700300001 BIB 2 5 3283700300002 REACTION (82-PB-0(N,2N),,SIG) 3283700300003 ERR-ANALYS (DATA-ERR) The main uncertainty from the nonelastic 3283700300004 cross section and the statistical fluctuation of the 3283700300005 ratio of number of neutrons evaporated and without 3283700300006 sample. 3283700300007 ENDBIB 5 0 3283700300008 NOCOMMON 0 0 3283700300009 DATA 3 1 3283700300010 EN DATA DATA-ERR 3283700300011 MEV B B 3283700300012 14. 1.7 0.3 3283700300013 ENDDATA 3 0 3283700300014 ENDSUBENT 13 0 3283700399999 ENDENTRY 3 0 3283799999999