ENTRY 22295 20061020 21802229500000001 SUBENT 22295001 20061020 21802229500100001 BIB 18 67 2229500100002 REFERENCE (J,NST,32,395,199505) 2229500100003 TITLE -Measurement of thermal neutron cross section and 2229500100004 resonance integral of the reaction 99-Tc(n,g)100-Tc. 2229500100005 AUTHOR (H.HARADA, S.NAKAMURA, T.KATOH, Y.OGATA) 2229500100006 INSTITUTE (2JPNPNC) H.H., S.N. 'JNC' was renamed to 'PNC' 2229500100007 after appearance of this work, so extinct code JNC 2229500100008 seems to be more relevant 2229500100009 (2JPNNAG) T.K., Y.O. 2229500100010 (2JPNYOK) EXPERIMENTAL SITE. 2229500100011 FACILITY (REAC,2JPNYOK) THE TRIGA MARK II reactor at Rikkyo 2229500100012 University. 2229500100013 INC-SOURCE (REAC) 2229500100014 INC-SPECT .Sample irradiated in the reflector surrounding the 2229500100015 core of the reactor, giving a thermal N-flux 5.0E+11 2229500100016 n/cm2/s and an epithermal index in the Westcott con- 2229500100017 vention of 0.033. 2229500100018 METHOD (ACTIV) Irradiation time 2 min. irradiations were per- 2229500100019 formed with and without cadmium shielding. the delay 2229500100020 time from end of irradiation to start of activity 2229500100021 measurement was typically 1 min. 2229500100022 .the monitor wires were irradiated for 10 min. 2229500100023 DETECTOR (HPGE ) The activities were measured with a HPGE detec-2229500100024 tor, having a relative efficiency of 90 percent and a 2229500100025 resolution of 2.1 keV FWHM at 1.33 MeV. the distance 2229500100026 from the centre of the sample to the front end of the 2229500100027 detector was 100 mm. The peak efficiency was measured 2229500100028 with a calibrated multi-gamma source, containing 2229500100029 Sn-118, Sr-85, Cs-137, Y-88 and Co-60. 2229500100030 PART-DET (DG) 2229500100031 MONITOR ((MONIT1)27-CO-59(N,G)27-CO-60-G,,SIG,,MXW) 2229500100032 ((MONIT2)79-AU-197(N,G)79-AU-198-G,,SIG,,MXW) 2229500100033 DECAY-MON (27-CO-60-G,5.271YR,DG,1173.,1.0, 2229500100034 DG,1332.,1.0) 2229500100035 (79-AU-198-G,2.696D,DG,412.,.955) 2229500100036 SAMPLE .The Tc-99 was contained in 0.01 molar ammonium 2229500100037 hydroxide as ammonium pertechnotate. the specific 2229500100038 activity was determined to 461 +/- 7 KBq per gram in 2229500100039 a liquid scintillation counter. the solution was put 2229500100040 into for 4 polyethylene tubes, 10 mm in outer diameter2229500100041 and 45 mm in outer length, with 1 mm thick walls. the 2229500100042 weight of each target was determined to within 0.1 2229500100043 percent, and the activity ranged from 371 to 375 KBq. 2229500100044 the polyethylene tubes were located in an outer poly- 2229500100045 ethylene bottle. in some of the irradiations, a cad- 2229500100046 mium shield, 1 mm in thickness and 22 mm in outer dia-2229500100047 meter and 63 mm in outer length, was inserted between 2229500100048 the pulyethylene tube and the bottle. 2229500100049 .flux monitor wires of co-al and au-al alloys were 2229500100050 used. they had diameters of 0.38 and 0.51 mm, respec- 2229500100051 tively, and were inserted into the polyethylene tubes 2229500100052 shaped as spirales. 2229500100053 DECAY-DATA (43-TC-100,15.5SEC,DG,540.,.0700, 2229500100054 DG,591.,.0574) 2229500100055 .The half-life was determined as an average of four 2229500100056 values to 15.5 +/- 0.1 sec. 2229500100057 CORRECTION .The data were corrected for sum-coincidence loss, 2229500100058 pile-up and self-absorption. 2229500100059 ERR-ANALYS (DATA-ERR) The error given includes statistical and 2229500100060 systematic errors. 2229500100061 STATUS .Data taken from main reference. 2229500100062 (COREL,22866001) 2229500100063 HISTORY (19960203C) N.O. 2229500100064 (19961220E) 2229500100065 (20050525A) DATE is corrected. Correlation to 22866 2229500100066 established. Validity of extinct code JNC explained 2229500100067 (20050911A) Corrected SM 2229500100068 (20061020A) Corrected SM 2229500100069 ENDBIB 67 0 2229500100070 COMMON 2 3 2229500100071 MONIT1 MONIT2 2229500100072 B B 2229500100073 3.7200E+01 9.8800E+01 2229500100074 ENDCOMMON 3 0 2229500100075 ENDSUBENT 74 0 2229500199999 SUBENT 22295002 20060220 21762229500200001 BIB 3 5 2229500200002 REACTION (43-TC-99(N,G)43-TC-100,,SIG) Sigma for V0=2200 m/s 2229500200003 ANALYSIS .A WEIGHTED MEAN OF 4 MEASUREMENTS WAS CALCULATED. 2229500200004 HISTORY (19960203C) N.O. 2229500200005 (19961220E) 2229500200006 (20060220A) SF8 'MXW' erased, EN-DUMMY changed for EN 2229500200007 ENDBIB 5 0 2229500200008 NOCOMMON 0 0 2229500200009 DATA 3 1 2229500200010 EN DATA DATA-ERR 2229500200011 EV B B 2229500200012 2.5300E-02 2.2900E+01 1.3000E+00 2229500200013 ENDDATA 3 0 2229500200014 ENDSUBENT 13 0 2229500299999 SUBENT 22295003 20050911 21742229500300001 BIB 2 5 2229500300002 REACTION (43-TC-99(N,G)43-TC-100,,RI) 2229500300003 HISTORY (19960203C) N.O. 2229500300004 (19961220E) 2229500300005 (20050911A) Energy changed to 0.5 eV. REACTION 2229500300006 corrected - SF8="MXW" deleted 2229500300007 ENDBIB 5 0 2229500300008 NOCOMMON 0 0 2229500300009 DATA 3 1 2229500300010 EN-MIN DATA DATA-ERR 2229500300011 EV B B 2229500300012 0.5 3.9800E+02 3.8000E+01 2229500300013 ENDDATA 3 0 2229500300014 ENDSUBENT 13 0 2229500399999 ENDENTRY 3 0 2229599999999