ENTRY 31448 20100307 31443144800000001 SUBENT 31448001 20100307 31443144800100001 BIB 16 36 3144800100002 TITLE Measurement of the average cross sections in U-235 3144800100003 fission neutron spectrum for threshold reactions 3144800100004 in Mo-95, -98, I-127 and P-31. 3144800100005 AUTHOR (M.S.Dias,L.P.Geraldo,M.F.Koskinas) 3144800100006 INSTITUTE (3BZLIPE) 3144800100007 REFERENCE (C,94GATLIN,1,257,199405) 3144800100008 FACILITY (REAC,3BZLIPE) IEA-R1 reactor. 3144800100009 INC-SOURCE (REAC) The irradiations have been performed near the 3144800100010 reactor core, very close to the fuel element. 3144800100011 Neutron flux around 5. x 10**12 n/cm2/sec. 3144800100012 INC-SPECT The spectrum was similar to an U-235 fission spectrum. 3144800100013 MONITOR ((MONIT1)13-AL-27(N,A)11-NA-24,,SIG) 3144800100014 ((MONIT2)28-NI-58(N,P)27-CO-58,,SIG) 3144800100015 ((MONIT3)26-FE-54(N,P)25-MN-54,,SIG) 3144800100016 MONIT-REF ((MONIT1)22020004,W.Mannhart,C,84GEESTH,2,813,198409) 3144800100017 ((MONIT2)12847006,G.P.Lamaze,C,82ANTWER,2,425,198209) 3144800100018 ((MONIT3)22020010,W.Mannhart,C,84GEESTH,2,813,198409) 3144800100019 DETECTOR (HPGE) 3144800100020 METHOD (ACTIV) 3144800100021 ERR-ANALYS (DATA-ERR) No error analysis given. 3144800100022 CORRECTION Corrections have been made for pile-up effects, self- 3144800100023 absorption, dead-time, geometry and decay, in the 3144800100024 activity calculation. 3144800100025 COVARIANCE Reactions rel. st. Covariance matrix 3144800100026 dev. (%) 3144800100027 ------------------------------------------------- 3144800100028 Mo-98(n,a)Zr-95 4.23 1. 3144800100029 Mo-95(n,p)Nb-95 2.90 .643 1. 3144800100030 I-127(n,2n)I-126 3.38 .552 .806 1. 3144800100031 p-31(n,p)Si-31 3.26 .576 .842 .304 1. 3144800100032 ------------------------------------------------- 3144800100033 STATUS (TABLE) Data were taken from Tables 1 and 2 of 3144800100034 'Int. Conf. on Nucl. Data for Sci. and Technology, 3144800100035 Gatlinburg, Tennessee, May 9-13, 1994', p. 257. 3144800100036 HISTORY (19950620C) HW 3144800100037 (20100219A) SD:Updated to new date formats,lower case. 3144800100038 ENDBIB 36 0 3144800100039 COMMON 7 6 3144800100040 EN-DUMMY MONIT1 MONIT1-ERR MONIT2 MONIT2-ERR MONIT3 3144800100041 MONIT3-ERR 3144800100042 MEV MB MB MB MB MB 3144800100043 MB 3144800100044 1.5 .706 .028 109. 3. 80.5 3144800100045 2.3 3144800100046 ENDCOMMON 6 0 3144800100047 ENDSUBENT 46 0 3144800199999 SUBENT 31448002 20100307 31443144800200001 BIB 2 4 3144800200002 REACTION (42-MO-98(N,A)40-ZR-95,,SIG,,FIS) 3144800200003 SAMPLE High purity metal wire ( reactor experiments inc., 3144800200004 USA), bended in spiral in order to obtain an 3144800200005 approximate disk shape. 3144800200006 ENDBIB 4 0 3144800200007 NOCOMMON 0 0 3144800200008 DATA 2 1 3144800200009 DATA DATA-ERR 3144800200010 MB MB 3144800200011 .00947 .00040 3144800200012 ENDDATA 3 0 3144800200013 ENDSUBENT 12 0 3144800299999 SUBENT 31448003 20100307 31443144800300001 BIB 3 7 3144800300002 REACTION (42-MO-95(N,P)41-NB-95,,SIG,,FIS) 3144800300003 SAMPLE High purity metal wire ( reactor experiments inc., 3144800300004 USA), bended in spiral in order to obtain an 3144800300005 approximate disk shape. 3144800300006 CORRECTION The amount of Nb-95 activity arising from the decay 3144800300007 of Zr-95 has been taken into account and resulted 3144800300008 about 6% at the time of the measurement. 3144800300009 ENDBIB 7 0 3144800300010 NOCOMMON 0 0 3144800300011 DATA 2 1 3144800300012 DATA DATA-ERR 3144800300013 MB MB 3144800300014 .174 .0050 3144800300015 ENDDATA 3 0 3144800300016 ENDSUBENT 15 0 3144800399999 SUBENT 31448004 20100307 31443144800400001 BIB 2 4 3144800400002 REACTION (53-I-127(N,2N)53-I-126,,SIG,,FIS) 3144800400003 SAMPLE High purity KI, in powder form, wrapped in 3144800400004 aluminium foil in order to obtain a geometry 3144800400005 similar to the other samples. 3144800400006 ENDBIB 4 0 3144800400007 NOCOMMON 0 0 3144800400008 DATA 2 1 3144800400009 DATA DATA-ERR 3144800400010 MB MB 3144800400011 1.292 .040 3144800400012 ENDDATA 3 0 3144800400013 ENDSUBENT 12 0 3144800499999 SUBENT 31448005 20100307 31443144800500001 BIB 2 4 3144800500002 REACTION (15-P-31(N,P)14-SI-31,,SIG,,FIS) 3144800500003 SAMPLE High purity NH4H2PO4, in powder form, wrapped in 3144800500004 aluminium foil in order to obtain a geometry 3144800500005 similar to the other samples. 3144800500006 ENDBIB 4 0 3144800500007 NOCOMMON 0 0 3144800500008 DATA 2 1 3144800500009 DATA DATA-ERR 3144800500010 MB MB 3144800500011 37.9 1.2 3144800500012 ENDDATA 3 0 3144800500013 ENDSUBENT 12 0 3144800599999 ENDENTRY 5 0 3144899999999