ENTRY 32617 20090515 31363261700000001 SUBENT 32617001 20090515 31363261700100001 BIB 15 54 3261700100002 TITLE Production cross section of discrete gamma-rays 3261700100003 resulting from interaction of 14.2 MeV neutrons with 3261700100004 Pb and Bi. 3261700100005 AUTHOR (WU YONGSHUN,SHEN RONGLIN,SHI XIAMIN,XING JINQIANG, 3261700100006 DING DAZHAO) 3261700100007 INSTITUTE (3CPRAEP) 3261700100008 REFERENCE (J,CNP,4,(1),299,198211) in chinese. 3261700100009 FACILITY (CCW) 600 kV Cockcroft-Walton accelerator. 3261700100010 INC-SOURCE (D-T) 200 keV deuterons on T-TI target. 3261700100011 METHOD (TOF,ASSOP) 3261700100012 PART-DET (G) 3261700100013 DETECTOR (GELI) A 40 cm3 coaxial Ge-Li detector with resolution 3261700100014 3.0 keV for 1332 kev gamma-ray of Co-60 was used for 3261700100015 gamma-ray measurement. 3261700100016 The efficiency of the detector for full energy peak 3261700100017 and double escape peak was calibrated prior to the 3261700100018 measurement. 3261700100019 MONITOR Absolute measurement, the neutron fluence was 3261700100020 determined by associated alpha-particle counting with 3261700100021 an Au-Si surface barrier detector at 90 degree. 3261700100022 CORRECTION corrections applied for 3261700100023 . gamma-ray peak area 3261700100024 . neutron fluence on sample 3261700100025 . efficiency of ge-li detector 3261700100026 . nuclei number in sample 3261700100027 . multi-scattering and attenuation of neutrons in 3261700100028 sample 3261700100029 . gamma-ray self-absorption in sample 3261700100030 ERR-ANALYS The total error is 10 per-cent (not include the 3261700100031 statistical error for peak area), 3261700100032 main error sources are as follows: 3261700100033 . 1 per-cent absorption of neutrons by target, 3261700100034 target backing and cooling water etc. 3261700100035 . 1 per-cent dead time of time amplitude converter. 3261700100036 . 3 per-cent back-ground without sample 3261700100037 . 1 per-cent time-window for gamma-ray 3261700100038 . 1 per-cent distance between the sample 3261700100039 and detector. 3261700100040 . 4 per-cent angle between the sample and incident 3261700100041 neutron direction 3261700100042 . 3 per-cent ununiformity of sample thickness and the 3261700100043 solid angle subtended by the target at sample. 3261700100044 . 5 per-cent calculation processing of peak area 3261700100045 . 4 per-cent efficiency of detector 3261700100046 . 2 per-cent multi-scattering and self-absorption of 3261700100047 neutrons 3261700100048 . 1 per-cent gamma-ray self-absorption in sample 3261700100049 SAMPLE Pure metallic lead disk diameter=130 mm, 3261700100050 thickness=6 and 10 mm; bismuth disk diameter=100 mm 3261700100051 thickness=10 mm 3261700100052 STATUS Data taken from table 2 and 3 of J. CNP,4(1), 3261700100053 p.299 (1982) 3261700100054 HISTORY (19940816C) Compiled by Liang Qichang (CNDC) 3261700100055 (20090405D) Entry deleted. Duplication with 30656 3261700100056 ENDBIB 54 0 3261700100057 COMMON 2 3 3261700100058 EN ANG 3261700100059 MEV ADEG 3261700100060 14.2 55. 3261700100061 ENDCOMMON 3 0 3261700100062 ENDSUBENT 61 0 3261700199999 NOSUBENT 32617002 20090515 31363261700200001 NOSUBENT 32617003 20090515 31363261700300001 NOSUBENT 32617004 20090515 31363261700400001 ENDENTRY 4 0 3261799999999