ENTRY 22791 20151216 22462279100000001 SUBENT 22791001 20151216 22462279100100001 BIB 14 45 2279100100002 TITLE .Radiochemical determination of fission yields for the 2279100100003 fission of 232Th by pile neutrons 2279100100004 AUTHOR (M.Bresesti, G.Buret, P.Ferrari, L.Moretto) 2279100100005 INSTITUTE (2ZZZISP) Nuclear Chemistry Laboratory, Chemistry 2279100100006 Department, CCR Euratom, Ispra, Italy. 2279100100007 (2ITYSAL) Sorin Nuc.Res.Centre Saluggia. Experimental 2279100100008 site 2279100100009 REFERENCE (J,JIN,29,1189,1967) Main reference, data tables 2279100100010 are given 2279100100011 REL-REF (I,,P.C.Stevenson+,R,NAS-NRC-3020,1961) Nat.Acad. 2279100100012 of Sci., Nat.Res. Council Reports. Radiochemistry of 2279100100013 Rare Earths. 2279100100014 FACILITY (REAC,2ZZZISP) Ispra-1 thermal reactor 2279100100015 (REAC,2ITYSAL) Avogadro RS 1 reactor at Sorin, 2279100100016 METHOD (CHSEP) Radiochemical analysis 2279100100017 (COINC) Gamma - 4PI-beta- coincidence 2279100100018 (GSPEC,PHD) Gamma spectrometry with pulse-height 2279100100019 analysis 2279100100020 DETECTOR (NAICR) 3 in.* 3 in. NaI(Tl) crystal - for gamma rays 2279100100021 (PROPC) Proportional counter for betas, connected to 2279100100022 NaI(Tl) counter 2279100100023 PART-DET (G,B-) 2279100100024 SAMPLE .Samples of U-235, U-238, Th-232 were sealed in a 2279100100025 quartz tubes and placed in a cadmium boxes with 1 mm 2279100100026 thick walls 2279100100027 DECAY-DATA (39-Y-93-G,10.HR,DG,267.,,B-) 2279100100028 (57-LA-140,40.HR,DG,1.60E+3,,B-) 2279100100029 (58-CE-141,33.D,DG,,,B-) 2279100100030 (58-CE-143,33.HR,DG,294.,,B-) 2279100100031 (58-CE-144,284.D,DG,135.,,B-) 2279100100032 (59-PR-143,13.7D,DG,145.,,B-) 2279100100033 (60-ND-147,11.D,DG,,,B-) 2279100100034 (61-PM-147,,DG,532.,,B-) 2279100100035 (61-PM-149,53.HR,DG) ! gamma-photopeaks of both2279100100036 (61-PM-151,28.4HR,DG) ! nuclides are presented 2279100100037 ! in the spectrum region 2279100100038 ! between 250 and 400 keV.2279100100039 (62-SM-153,47.HR,DG,103.,,B-) 2279100100040 CORRECTION .Corrections were made for the rare earth admixtures 2279100100041 in samples before and after irradiation by means of 2279100100042 gamma ray spectroscopy 2279100100043 ERR-ANALYS (DATA-ERR) Standard uncertainty 2279100100044 HISTORY (20091124C) S.M. 2279100100045 (20151216A) SD: Pm-153 -> Pm-151; hl=33.d -> 33.hr of 2279100100046 Ce-143 in DECAY-DATA following JIN,29,1189,1967. 2279100100047 ENDBIB 45 0 2279100100048 NOCOMMON 0 0 2279100100049 ENDSUBENT 48 0 2279100199999 SUBENT 22791002 20091124 22192279100200001 BIB 7 10 2279100200002 REACTION (92-U-235(N,F)ELEM/MASS,CUM,FY,,MXW) 2279100200003 INC-SOURCE (REAC) Graphite reflector of the Ispra-1 reactor 2279100200004 INC-SPECT .Thermal neutrons, flux 2.E+11 n/cm2/sec 2279100200005 MONITOR (92-U-235(N,F)58-CE-141,CUM,FY) 2279100200006 SAMPLE .Uranium-aluminium alloy, 15% Uranium, 2279100200007 weight 10 milligram 2279100200008 (92-U-235,ENR=0.93) 2279100200009 REL-REF (A,,,R,ANL-5800,1963) Reactor Physics constants, 2279100200010 Second edition. 2279100200011 STATUS (TABLE) Table 1 of JIN, v.29, p.1189, 1967. 2279100200012 ENDBIB 10 0 2279100200013 COMMON 2 3 2279100200014 EN-DUMMY MONIT 2279100200015 EV PC/FIS 2279100200016 2.5E-02 6. 2279100200017 ENDCOMMON 3 0 2279100200018 DATA 4 5 2279100200019 ELEMENT MASS DATA DATA-ERR 2279100200020 NO-DIM NO-DIM PC/FIS PC/FIS 2279100200021 39. 93. 6.83 0.04 2279100200022 56. 140. 6.51 0.15 2279100200023 58. 143. 5.82 0.12 2279100200024 60. 147. 2.48 0.06 2279100200025 62. 153. 0.140 0.003 2279100200026 ENDDATA 7 0 2279100200027 ENDSUBENT 26 0 2279100299999 SUBENT 22791003 20091124 22192279100300001 BIB 8 18 2279100300002 REACTION (90-TH-232(N,F)ELEM/MASS,CUM,FY,,SPA) 2279100300003 INC-SOURCE (REAC) Reactor core of the Avogadro RS 1 reactor 2279100300004 and reflector of Ispra-1 reactor 2279100300005 INC-SPECT .Pile neutron spectrum. Fast neutron flux was 2.E+11 2279100300006 n/cm2/sec in Ispra-1 and (0.5 to 1.0)E+13 n/cm2/sec 2279100300007 in Avogadro RS reactor 2279100300008 SAMPLE .Th-(N-O3)4*(4H2-O) composite sealed in a quartz tube 2279100300009 and placed in cadmium cylinder. Partially dehydrated 2279100300010 by heating at 150 deg-C during several hours. Mass of 2279100300011 several samples from 200 to 500 milligram 2279100300012 MONITOR (90-TH-232(N,F)58-CE-141,CUM,FY) 2279100300013 REL-REF (D,,J.M.Crook+,R,TID-1599,1963) Div. of Tech. Info. 2279100300014 US AEC Reports 2279100300015 (D,30947001,R.H.Iyer+,J,JIN,25,465,1963) 2279100300016 (D,13463001,T.J.Kennett+,J,CJP,35,969,1957) 2279100300017 (D,,A.Wyttenbach+,J,RCA,3,118,1964) 2279100300018 MISC-COL (MISC) Number of measurements 2279100300019 STATUS (TABLE) Table 2 of JIN, vol.29, p.1189 2279100300020 ENDBIB 18 0 2279100300021 COMMON 2 3 2279100300022 EN-APRX MONIT 2279100300023 MEV PC/FIS 2279100300024 1. 7. 2279100300025 ENDCOMMON 3 0 2279100300026 DATA 5 8 2279100300027 ELEMENT MASS DATA DATA-ERR MISC 2279100300028 NO-DIM NO-DIM PC/FIS PC/FIS NO-DIM 2279100300029 39. 93. 7.24 0.07 4. 2279100300030 56. 140. 7.99 0.23 7. 2279100300031 58. 143. 6.56 0.12 8. 2279100300032 58. 144. 7.50 0.30 3. 2279100300033 60. 147. 2.99 0.08 8. 2279100300034 60. 149. 1.455 0.015 2. 2279100300035 61. 151. 0.422 0.008 3. 2279100300036 62. 153. 0.198 0.004 2. 2279100300037 ENDDATA 10 0 2279100300038 ENDSUBENT 37 0 2279100399999 ENDENTRY 3 0 2279199999999