ENTRY 14803 20230315 1480300000001 SUBENT 14803001 20230315 20231011 1480300100001 BIB 10 23 1480300100002 TITLE Thermal Neutron Cross Section for 125I 1480300100003 AUTHOR (D.C.Santry,R.D.Werner) 1480300100004 REFERENCE (R,INDC(SEC)-62,120(2),1977) 1480300100005 INSTITUTE (1CANCRC) 1480300100006 FACILITY (REAC,1CANCRC) NRU reactor. 1480300100007 DETECTOR (GE-IN,GELI) 1480300100008 METHOD (INTB) Irradiations in the NRU reactor for about 33 1480300100009 days gave an integrated flux of 7.3 x 10**20 1480300100010 neutrons/cm2 with depletion ratios of 2.2 for 125I 1480300100011 and 1.037 for 131I. Gamma-ray counting rates of the 1480300100012 iodine samples were measured before and after neutron 1480300100013 irradiations, using high resolution photon detectors. 1480300100014 The 35-keV gamma ray of 125I was measured with an 1480300100015 intrinsic Ge X-ray detector, while the 364-keV gamma 1480300100016 ray of 131I and 1.33-MeV gamma ray of 60Co were 1480300100017 measured with a Ge(Li) detector. 1480300100018 ANALYSIS Calculated cross sections based on these depletion 1480300100019 ratios are 1030 +- 300 barns for 125I and 85 +- 50 1480300100020 barns for 131I. 1480300100021 ERR-ANALYS (DATA-ERR) An observed scatter in results of 15 to 1480300100022 25% was traced to instabilities in the data 1480300100023 acquisition system. 1480300100024 HISTORY (20230315C) BP 1480300100025 ENDBIB 23 0 1480300100026 COMMON 1 3 1480300100027 EN-DUMMY 1480300100028 EV 1480300100029 0.0253 1480300100030 ENDCOMMON 3 0 1480300100031 ENDSUBENT 30 0 1480300199999 SUBENT 14803002 20230315 20231011 1480300200001 BIB 2 3 1480300200002 REACTION (53-I-125(N,G)53-I-126,,SIG,,MXW) 1480300200003 STATUS (TABLE,,D.C.Santry+,R,INDC(SEC)-62,120(2),1977) 1480300200004 page 121 of R,INDC(SEC)-62,120(2),1977. 1480300200005 ENDBIB 3 0 1480300200006 NOCOMMON 0 0 1480300200007 DATA 2 1 1480300200008 DATA DATA-ERR 1480300200009 B B 1480300200010 1030.0 300.0 1480300200011 ENDDATA 3 0 1480300200012 ENDSUBENT 11 0 1480300299999 SUBENT 14803003 20230315 20231011 1480300300001 BIB 2 3 1480300300002 REACTION (53-I-131(N,G)53-I-132,,SIG,,MXW) 1480300300003 STATUS (TABLE,,D.C.Santry+,R,INDC(SEC)-62,120(2),1977) 1480300300004 page 121 of R,INDC(SEC)-62,120(2),1977. 1480300300005 ENDBIB 3 0 1480300300006 NOCOMMON 0 0 1480300300007 DATA 2 1 1480300300008 DATA DATA-ERR 1480300300009 B B 1480300300010 85.0 50.0 1480300300011 ENDDATA 3 0 1480300300012 ENDSUBENT 11 0 1480300399999 ENDENTRY 3 0 1480399999999