ENTRY 22326 19981102 00002232600000001 SUBENT 22326001 19981102 00002232600100001 BIB 15 32 2232600100002 REFERENCE (C,94GATLIN,,230,199405) MAIN REF. 2232600100003 TITLE -MEASUREMENT OF THE NEUTRON CAPTURE CROSS SECTION OF 2232600100004 TC-99. 2232600100005 AUTHOR (T.KATOH,Y.OGATA,H.HARADA,S.NAKAMURA) 2232600100006 INSTITUTE (2JPNNAG) T.K., Y.O. 2232600100007 (2JPNJAE) H.H., S.N. 2232600100008 (2JPNYOK) RIKKYO UNIVERSITY, EXPERIMENTAL SITE. 2232600100009 FACILITY (REAC,2JPNYOK) THE RIKKYO UNIVERSITY REACTOR. 2232600100010 INC-SOURCE (REAC ) 2232600100011 INC-SPECT .THERMAL NEUTRONS FROM REACTOR. IRRADIATIONS WERE PER- 2232600100012 FORMED BOTH WITH AND WITHOUT CD SHIELDS. 2232600100013 METHOD (ACTIV) 2232600100014 THE RESONANCE INTEGRAL WAS MEASURED USING THE CD-RATI 2232600100015 METHOD. 2232600100016 .CO/AL AND AU/AL ALLOYS WERE USED TO DETERMINE THE 2232600100017 NEUTRON FLUX AND THE WESTCOTT EPITHERMAL INDEX. THE 2232600100018 NEUTRON FLUX WAS FOUND TO BE 4.62E+11 +/- 0.08E+11 2232600100019 NEUTRONS/CM2/SEC, AND THE EPITHERMAL INDEX 0.033. 2232600100020 DETECTOR (HPGE ) THE CAPTURE GAMMA-RAY ACTIVITIES WERE MEASURED 2232600100021 WITH A HPGE DETECTOR OF 90 PERCENT EFFICIENCY COMBINE 2232600100022 WITH FAST ELECTRONICS. 2232600100023 PART-DET (DG) 540 AND 591 KEV GAMMA-RAYS FROM TC-100. 2232600100024 SAMPLE .THE FOUR TARGETS EACH CONTAINED ABOUT 370 KBQ OF 2232600100025 TC-99. THE SPECIFIC ACTIVITY OF THE TC-99 WAS TARGET 2232600100026 SOLUTION WAS DETERMINED BY MEASURING THE SPECIFIC 2232600100027 BETA-ACTIVITY BY THE LIQUID SCINTILLATION COUNTING 2232600100028 METHOD, AND WAS FOUND TO BE 461 KBQ/G. 2232600100029 CORRECTION .CORRECTIONS WERE MADE FOR EPITHERMAL NEUTRONS. 2232600100030 ERR-ANALYS (DATA-ERR) ERRORS ARE NOT SPECIFIED 2232600100031 STATUS .DATA TAKEN FROM MAIN REF. 2232600100032 HISTORY (19961229C) N.O. 2232600100033 (19970214E) 2232600100034 ENDBIB 32 0 2232600100035 NOCOMMON 0 0 2232600100036 ENDSUBENT 35 0 2232600199999 SUBENT 22326002 19970214 00002232600200001 BIB 4 5 2232600200002 REACTION (43-TC-99(N,G)43-TC-100,,SIG) 2232600200003 DECAY-DATA (43-TC-100,15.5SEC,DG,540./591.) 2232600200004 STATUS .DATA TAKEN FROM MAIN REF. 2232600200005 HISTORY (961229C) N.O. 2232600200006 (970214E) 2232600200007 ENDBIB 5 0 2232600200008 NOCOMMON 0 0 2232600200009 DATA 3 1 2232600200010 EN DATA DATA-ERR 2232600200011 EV B B 2232600200012 2.5300E-02 2.2700E+01 1.1000E+00 2232600200013 ENDDATA 3 0 2232600200014 ENDSUBENT 13 0 2232600299999 SUBENT 22326003 19981102 00002232600300001 BIB 4 7 2232600300002 REACTION (43-TC-99(N,G)43-TC-100,,RI) 2232600300003 DECAY-DATA (43-TC-100,15.5SEC,DG,540./591.) 2232600300004 COMMENT .EN-MIN IS NOT GIVEN. SUPPOSED AS BEING 0.45 EV 2232600300005 BY THE SECOMG COMPILER (S.M.) 2232600300006 HISTORY (19961229C) N.O. 2232600300007 (19970214E) 2232600300008 (19981102A) ENERGY ADDED TO DATA SECTION 2232600300009 ENDBIB 7 0 2232600300010 NOCOMMON 0 0 2232600300011 DATA 3 1 2232600300012 EN-MIN DATA DATA-ERR 2232600300013 EV B B 2232600300014 4.5000E-01 3.9500E+02 3.4000E+01 2232600300015 ENDDATA 3 0 2232600300016 ENDSUBENT 15 0 2232600399999 ENDENTRY 3 0 2232699999999