ENTRY 30365 20090104 31343036500000001 SUBENT 30365001 20090104 31343036500100001 BIB 14 28 3036500100002 INSTITUTE (3ISLSOR) 3036500100003 REFERENCE (J,JIN,38,2133,197612) 3036500100004 AUTHOR (N.Lavi,Y.Nir-el) 3036500100005 TITLE Isomer yield ratios of I-132m and I-134m. 3036500100006 FACILITY (REAC) IRR-1 Reactor in Soreq. 3036500100007 INC-SOURCE (REAC) 3036500100008 INC-SPECT Irradiation for 20 sec in a 5.E+12 n/cm2/sec thermal 3036500100009 neutron flux. 3036500100010 SAMPLE Solution of UO(2)((NO(3))(2). Enriched U-235,93.3% 3036500100011 400 micro-g of U-235. 3036500100012 METHOD Fast radiochemical separation. 3036500100013 This separation, which extracts fission products by 3036500100014 vacuum with a hypodermic needle and then separates the 3036500100015 iodine isotopes by precipitating them as Ag-I 3036500100016 takes only 150 sec. 3036500100017 DETECTOR (SOLST) 100mm2 Si(Li) detector (Seforad,Israel), with 3036500100018 active depth of 4 mm. 3036500100019 The energy resolutions(FWHM) of the spectrometer for 3036500100020 6.4 keV(Fe)K-alpha X-rays and for 32.2keV(Ba)K-alpha 3036500100021 x-rays are 450 eV and 550 eV, respectively. 3036500100022 PART-DET (XR) K-alpha X-rays. 28.6 keV iodine-peak. 3036500100023 STATUS (APRVD) Approved by N.Lavi, 77/08/03. 3036500100024 HISTORY (19761207C) KO. 3036500100025 (19771017U) KO.-'Aprvd' added, amendment of 3036500100026 author's name 3036500100027 (20090115A) BIB section updated 3036500100028 CORRECTION Saturation correction, and corrections for the 3036500100029 transition intensity of each gamma line are performed. 3036500100030 ENDBIB 28 0 3036500100031 NOCOMMON 0 0 3036500100032 ENDSUBENT 31 0 3036500199999 SUBENT 30365002 20090104 31343036500200001 BIB 5 14 3036500200002 REACTION (92-U-235(N,F)ELEM/MASS,IND,FY,,MXW/REL) 3036500200003 ANALYSIS The internal conversion coefficient(ICC) of the gamma 3036500200004 radiations of two isomeric transitions are, 3036500200005 E(gamma) ICC(exp) ICC(Nucl.Data,14('68)833036500200006 I-132m 98 keV 6.8 +- 1.8 7.2 3036500200007 I-134m 272 keV 0.20 +- 0.03 0.16 3036500200008 DECAY-DATA ((1.)53-I-132-M,8.3100E+01MIN,XR) 3036500200009 ((2.)53-I-134-M,3.5000E+00MIN,XR) 3036500200010 The half-lives of I-132m and I-134m have been 3036500200011 determined by this work. 3036500200012 COMMENT The ratio of the independent fission yield is seen to 3036500200013 be equal to the ratio of the yields of the meta-stable 3036500200014 states. 3036500200015 STATUS (TABLE) Data from j.Inorg.Nucl.Chem.,38(1976)2133. 3036500200016 ENDBIB 14 0 3036500200017 COMMON 2 3 3036500200018 EN-DUMMY ELEMENT 3036500200019 EV NO-DIM 3036500200020 2.5300E-02 53. 3036500200021 ENDCOMMON 3 0 3036500200022 DATA 6 2 3036500200023 MASS ISOMER DATA DATA-ERR DECAY-FLAG ERR-HL 3036500200024 NO-DIM NO-DIM ARB-UNITS ARB-UNITS NO-DIM MIN 3036500200025 1.3200E+02 1.0000E+00 1.0000E+00 1. 1.0000E+003036500200026 1.3400E+02 1.0000E+00 5.1900E+01 7.1000E+00 2. 2.0000E-023036500200027 ENDDATA 4 0 3036500200028 ENDSUBENT 27 0 3036500299999 ENDENTRY 2 0 3036599999999