ENTRY 22792 20180318 227022792 0 1 SUBENT 22792001 20180318 227022792 1 1 BIB 11 16 22792 1 2 TITLE Th-232 fission yields determination by gamma-ray 22792 1 3 spectroscopy on unseparated samples 22792 1 4 AUTHOR (M.Brasca, A.Cessna, V.Sangiust, M.Terrani) 22792 1 5 INSTITUTE (2ITYMIP) CESNEF, Politecnico di Milano 22792 1 6 REFERENCE (J,EN,20,691,1973) Main ref., data tables are given 22792 1 7 FACILITY (REAC,2ITYMIP) L54 reactor at CESNEF 22792 1 8 METHOD (GSPEC) Gamma ray spectroscopy 22792 1 9 DETECTOR (GELI) The 35 cm3 coaxial detector, resolution 22792 1 10 2.5 keV at 1330 keV gamma energy 22792 1 11 ANALYSIS (DECAY) Fission fragments were determined by energy 22792 1 12 of gamma rays and half-lives of the fission products 22792 1 13 CORRECTION .Correction was made for self-absorption of gammas 22792 1 14 ERR-ANALYS (DATA-ERR) Standard uncertainty 22792 1 15 HISTORY (20091126C) S.M. 22792 1 16 (20180318A) SD: REACTION code corrected in Subents 22792 1 17 002-004. Data were re-compiled in Subent 004. 22792 1 18 ENDBIB 16 0 22792 1 19 NOCOMMON 0 0 22792 1 20 ENDSUBENT 19 0 22792 199999 SUBENT 22792002 20180318 227022792 2 1 BIB 6 10 22792 2 2 REACTION (92-U-235(N,F)ELEM/MASS,CUM,FY,,MXW) 22792 2 3 INC-SOURCE (THCOL) Thermal column of the L54 reactor 22792 2 4 INC-SPECT .Thermal Maxwellian 22792 2 5 SAMPLE .Coin-shaped sample of Aluminum-Uranium alloy, 3% of 22792 2 6 uranium, 15 mm diameter, thickness aprx. 31 mg/cm2 22792 2 7 wrapped in a 5 mg/cm2 thick aluminum foil 22792 2 8 (92-U-235,ENR=0.93) 22792 2 9 STATUS (TABLE) Table 4 of Energ.Nucl.20(1973)691 22792 2 10 HISTORY (20180318A) SD: SF5=SEC -> CUM in REACTION code 22792 2 11 according to MEMO CP-D/929. 22792 2 12 ENDBIB 10 0 22792 2 13 COMMON 1 3 22792 2 14 EN-DUMMY 22792 2 15 EV 22792 2 16 2.5 E-02 22792 2 17 ENDCOMMON 3 0 22792 2 18 DATA 5 12 22792 2 19 ELEMENT MASS ISOMER DATA DATA-ERR 22792 2 20 NO-DIM NO-DIM NO-DIM PC/FIS PER-CENT 22792 2 21 36. 85. 1. 1.30 2.3 22792 2 22 36. 88. 3.60 0.5 22792 2 23 38. 91. 5.71 0.5 22792 2 24 38. 92. 5.92 0.5 22792 2 25 40. 97. 5.85 0.5 22792 2 26 52. 132. 4.15 1.5 22792 2 27 53. 131. 2.79 1.4 22792 2 28 53. 133. 6.73 0.6 22792 2 29 53. 135. 6.23 2.0 22792 2 30 56. 140. 6.29 0.5 22792 2 31 57. 142. 5.86 0.5 22792 2 32 58. 143. 5.80 0.5 22792 2 33 ENDDATA 14 0 22792 2 34 ENDSUBENT 33 0 22792 299999 SUBENT 22792003 20180318 227022792 3 1 BIB 8 17 22792 3 2 REACTION ((90-TH-232(N,F)ELEM/MASS,CUM,FY,,FST)/ 22792 3 3 (92-U-235(N,F)56-BA-140,CUM,FY,,FST)) 22792 3 4 METHOD (FNB) Neutron beam filtered by 800 mg/cm2 cadmium 22792 3 5 and 600 mg/cm2 natural boron filters in order to 22792 3 6 minimize 233Th and 233Pa activities arising from 22792 3 7 232Th neutron capture 22792 3 8 INC-SOURCE (REAC) Reactor core spectrum of L54 reactor 22792 3 9 INC-SPECT .Neutron spectrum similar to that of fission 22792 3 10 SAMPLE .Thorium oxide pellet 300 mg/cm2 thick, 15 mm diameter 22792 3 11 wrapped in a 5 mg/cm2 thick aluminum foil 22792 3 12 FLAG (1.) Obtained from 39-Y-91-m, gamma ray energy 22792 3 13 555.57 keV 22792 3 14 (2.) Obtained with the help of gamma energy 1131.6 keV 22792 3 15 (3.) Obtained with the help of gamma energy 1260.45 keV22792 3 16 STATUS (TABLE) Table 4 of Energ.Nucl.20(1973)691 22792 3 17 HISTORY (20180318A) SD: SF5=SEC -> CUM in REACTION code 22792 3 18 according to MEMO CP-D/929. 22792 3 19 ENDBIB 17 0 22792 3 20 COMMON 1 3 22792 3 21 EN-DUMMY 22792 3 22 MEV 22792 3 23 1. 22792 3 24 ENDCOMMON 3 0 22792 3 25 DATA 6 14 22792 3 26 ELEMENT MASS ISOMER DATA DATA-ERR FLAG 22792 3 27 NO-DIM NO-DIM NO-DIM NO-DIM PER-CENT NO-DIM 22792 3 28 36. 85. 1. 1.92 5.5 22792 3 29 36. 88. 1.11 3.2 22792 3 30 38. 91. 0.723 6.4 22792 3 31 38. 91. 0.714 2.7 1. 22792 3 32 38. 92. 0.673 4.1 22792 3 33 40. 97. 0.446 3.6 22792 3 34 52. 132. 0.360 7.8 22792 3 35 53. 131. 0.400 5.0 22792 3 36 53. 133. 0.331 7.0 22792 3 37 53. 135. 0.553 4.0 2. 22792 3 38 53. 135. 0.577 3.2 3. 22792 3 39 56. 140. 0.718 5.0 22792 3 40 57. 142. 0.666 4.5 22792 3 41 58. 143. 0.696 6.6 22792 3 42 ENDDATA 16 0 22792 3 43 ENDSUBENT 42 0 22792 399999 SUBENT 22792004 20180318 227022792 4 1 BIB 10 21 22792 4 2 REACTION (90-TH-232(N,F)ELEM/MASS,CUM,FY,,FST) 22792 4 3 METHOD (FNB) Neutron beam filtered by 800 mg/cm2 cadmium 22792 4 4 and 600 mg/cm2 natural boron filters in order to 22792 4 5 minimize 233Th and 233Pa activities arising from 22792 4 6 232Th neutron capture 22792 4 7 INC-SOURCE (REAC) Reactor core spectrum of L54 reactor 22792 4 8 INC-SPECT .Neutron spectrum similar to that of fission 22792 4 9 MONITOR (90-TH-232(N,F)56-BA-140,SEC,FY,,FST) 22792 4 10 MONIT-REF (,M.E.Meek+,R,NEDO-12154,1972) 22792 4 11 SAMPLE .Thorium oxide pellet 300 mg/cm2 thick, 15 mm diam. 22792 4 12 wrapped in a 5 mg/cm2 thick aluminum foil 22792 4 13 FLAG (1.) Obtained from 39-Y-91-m, gamma ray energy 22792 4 14 555.57 keV 22792 4 15 (2.) Obtained with the help of gamma energy 1131.6 keV 22792 4 16 (3.) Obtained with the help of gamma energy 1260.45 keV22792 4 17 STATUS (TABLE) Table 4 of Energ.Nucl.20(1973)691 22792 4 18 (DEP,22792003) 22792 4 19 HISTORY (20180318A) SD: SF5=SEC -> CUM in REACTION code 22792 4 20 according to MEMO CP-D/929. Data were re-compiled 22792 4 21 from Tbl. 5 (instead of Tb.4. In Tbl.4 relative yields 22792 4 22 presented; in Tbl.5 - absolute yields presented). 22792 4 23 ENDBIB 21 0 22792 4 24 COMMON 2 3 22792 4 25 EN-DUMMY MONIT 22792 4 26 MEV PC/FIS 22792 4 27 1. 7.807 22792 4 28 ENDCOMMON 3 0 22792 4 29 DATA 6 13 22792 4 30 ELEMENT MASS ISOMER DATA DATA-ERR FLAG 22792 4 31 NO-DIM NO-DIM NO-DIM PC/FIS PER-CENT NO-DIM 22792 4 32 36. 85. 1. 4.32 8.4 22792 4 33 36. 88. 6.91 6.7 22792 4 34 38. 91. 7.13 8.7 22792 4 35 38. 91. 7.05 6.4 1. 22792 4 36 38. 92. 6.87 7.1 22792 4 37 40. 97. 4.51 6.9 22792 4 38 52. 132. 2.57 10. 22792 4 39 53. 131. 1.93 7.8 22792 4 40 53. 133. 3.86 9.1 22792 4 41 53. 135. 5.96 7.4 2. 22792 4 42 53. 135. 6.20 7.0 3. 22792 4 43 57. 142. 6.74 7.4 22792 4 44 58. 143. 6.82 8.8 22792 4 45 ENDDATA 15 0 22792 4 46 ENDSUBENT 45 0 22792 499999 ENDENTRY 4 0 2279299999999