ENTRY 14500 20240403 15111450000000001 SUBENT 14500001 20240403 15111450000100001 BIB 10 69 1450000100002 TITLE Fission Product Yields from 232Th, 238U, and 235U 1450000100003 Using 14 MeV Neutrons 1450000100004 AUTHOR (B.D.Pierson,L.R.Greenwood,M.Flaska,S.A.Pozzi) 1450000100005 REFERENCE (J,NDS,139,171,2017) 1450000100006 #doi:10.1016/j.nds.2017.01.004 1450000100007 INSTITUTE (1USAMHG,1USABNW,1USAPSU) 1450000100008 FACILITY (NGEN,1USAMHG) Thermo-Scientific D711 accelerator- 1450000100009 based fusion neutron generator. 1450000100010 INC-SOURCE (D-T) The total flux above 9 MeV was measured to 1450000100011 be 2.96(17)*10**8 neutrons per cm2 second. 1450000100012 DETECTOR (HPGE) Three coaxial high-purity germanium detectors 1450000100013 were used to acquire data in list-mode in 1450000100014 coincidence using an XIA Pixie-4 digital data 1450000100015 acquisition system to study the delayed gamma 1450000100016 emissions of short-lived fission progeny from the 1450000100017 fissioned actinide targets. All three 40% relative 1450000100018 efficiency HPGe detectors were of the same dimension 1450000100019 (within 0.1 mm). The detectors were 84.5 mm diameter 1450000100020 cylinders that were 32 mm deep with a bevel radius of 1450000100021 8 mm. 1450000100022 METHOD (EXTB,FPGAM) Three separate actinide targets: 232Th, 1450000100023 238U, and 235U were heat sealed in polyethylene and 1450000100024 cyclically irradiated using a neutron generator and a 1450000100025 pneumatic shuttle system to measure the fission 1450000100026 yields of fission products with half-lives greater 1450000100027 than 0.5 seconds. Each cyclic irradiation entailed 1450000100028 sending the target from the radiation detectors to 1450000100029 the face of the neutron generator for a 5 second 1450000100030 irradiation. At the end of the irradiation interval, 1450000100031 the target was sent back to the radiation detection 1450000100032 system using pressurized helium gas for a count 1450000100033 period of 200 seconds before re-irradiation. 1450000100034 DECAY-DATA ((1.)33-AS-84,4.2SEC,DG,1454.55,0.89) 1450000100035 ((2.)34-SE-86,14.3SEC,DG,2441.1,0.43) 1450000100036 ((3.)34-SE-86,14.3SEC,DG,1564.64) 1450000100037 ((4.)35-BR-86,55.0SEC,DG,1564.64,0.65) 1450000100038 ((5.)35-BR-87,55.65SEC,DG,1419.71,0.22) 1450000100039 ((6.)35-BR-88,16.29SEC,DG,775.28,0.67) 1450000100040 ((7.)36-KR-89,189.0SEC,DG,220.948,0.201) 1450000100041 ((8.)36-KR-90,32.32SEC,DG,1118.69,0.39) 1450000100042 ((9.)36-KR-92,1.84SEC,DG,1218.6,0.5961) 1450000100043 ((10.)37-RB-94,2.702SEC,DG,836.9,0.61) 1450000100044 ((11.)37-RB-94,2.702SEC,DG,1577.5,0.2227) 1450000100045 ((12.)38-SR-94,75.3SEC,DG,1427.7,0.942) 1450000100046 ((13.)38-SR-95,23.9SEC,DG,685.6,0.226) 1450000100047 ((14.)38-SR-96,1.07SEC,DG,809.4,0.7191) 1450000100048 ((15.)39-Y-96-M,9.6SEC,DG,1750.6,0.88) 1450000100049 ((16.)39-Y-97-M1,1.17SEC,DG,1103.0,0.9235) 1450000100050 ((17.)39-Y-99,1.47SEC,DG,724.4,0.1706) 1450000100051 ((18.)39-Y-99,1.47SEC,DG,469.137) 1450000100052 ((19.)39-Y-99,1.47SEC,DG,546.13) 1450000100053 ((20.)40-ZR-99,2.1SEC,DG,469.137,0.552) 1450000100054 ((21.)40-ZR-99,2.1SEC,DG,546.13,0.4829) 1450000100055 ((22.)52-TE-136,17.5SEC,DG,2077.9,0.2237) 1450000100056 ((23.)53-I-136-G,83.4SEC,DG,1313.02,0.667) 1450000100057 ((24.)53-I-136-M,46.9SEC,DG,1313.02,1.0) 1450000100058 ((25.)54-XE-138,844.8SEC,DG,1768.26,0.1673) 1450000100059 ((26.)54-XE-139,39.68SEC,DG,218.59,0.56) 1450000100060 ((27.)54-XE-140,13.6SEC,DG,1413.66,0.122) 1450000100061 ((28.)55-CS-140,63.7SEC,DG,602.25,0.533) 1450000100062 ((29.)55-CS-142,1.684SEC,DG,359.598,0.272) 1450000100063 ((30.)56-BA-143,14.5SEC,DG,798.79,0.156) 1450000100064 ((31.)56-BA-144,11.5SEC,DG,397.44) 1450000100065 ((32.)57-LA-144,40.8SEC,DG,397.44,0.943) 1450000100066 ((33.)57-LA-146-M,10.0SEC,DG,258.42,0.9525) 1450000100067 ((34.)57-LA-146,6.27SEC,DG,258.47,0.637) 1450000100068 HISTORY (20180404C) BP 1450000100069 (20240402A) OS. DECAY-DATA: B- -> DG; Energy for Sr-95 1450000100070 corrected 1450000100071 ENDBIB 69 0 1450000100072 COMMON 2 3 1450000100073 EN EN-ERR 1450000100074 MEV MEV 1450000100075 14.3 0.3 1450000100076 ENDCOMMON 3 0 1450000100077 ENDSUBENT 76 0 1450000199999 SUBENT 14500002 20180404 144014500 2 1 BIB 4 17 14500 2 2 REACTION (90-TH-232(N,F)ELEM/MASS,CUM,FY) 14500 2 3 SAMPLE Oxide-powder with 99.9% purity, 0.1199 grams from 14500 2 4 PNNL. 14500 2 5 ERR-ANALYS (ERR-T) Errors include the uncertainty from the 14500 2 6 half-life, branching ratio, irradiation time, 14500 2 7 dead-time, and counting statistics, branching ratios. 14500 2 8 (ERR-1) The detector efficiencies of each HPGe 14500 2 9 detector (east, west, and vert). 14500 2 10 (ERR-2,1.,10.) Half-life (T1/2). 14500 2 11 (ERR-3,0.1,5.) Branching ratio. 14500 2 12 (ERR-4) Irradiation time. 14500 2 13 (ERR-5) Counting time. 14500 2 14 (ERR-6) Target mass. 14500 2 15 (ERR-7,1.,10.) Self-shielding (CFSS). 14500 2 16 (ERR-8,0.5,2.) Dead-time (CFDT). 14500 2 17 (ERR-9) Fission rate. 14500 2 18 STATUS (TABLE) Table IV, page 182. 14500 2 19 ENDBIB 17 0 14500 2 20 COMMON 5 3 14500 2 21 ERR-1 ERR-4 ERR-5 ERR-6 ERR-9 14500 2 22 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 14500 2 23 1.1 0.1 0.1 0.1 9.23 14500 2 24 ENDCOMMON 3 0 14500 2 25 DATA 6 34 14500 2 26 MASS ELEMENT ISOMER DATA ERR-T DECAY-FLAG 14500 2 27 NO-DIM NO-DIM NO-DIM PC/FIS PC/FIS NO-DIM 14500 2 28 84.0 33.0 0.99 0.12 1.014500 2 29 86.0 34.0 2.42 0.30 2.014500 2 30 86.0 34.0 2.07 0.29 3.014500 2 31 86.0 35.0 3.96 0.42 4.014500 2 32 87.0 35.0 4.18 0.49 5.014500 2 33 88.0 35.0 3.20 0.37 6.014500 2 34 89.0 36.0 5.37 0.67 7.014500 2 35 90.0 36.0 5.33 0.66 8.014500 2 36 92.0 36.0 2.31 0.30 9.014500 2 37 94.0 37.0 2.34 0.29 10.014500 2 38 94.0 37.0 2.45 0.35 11.014500 2 39 94.0 38.0 4.80 0.53 12.014500 2 40 95.0 38.0 4.30 0.53 13.014500 2 41 96.0 38.0 2.37 0.31 14.014500 2 42 96.0 39.0 1.0 0.49 0.07 15.014500 2 43 97.0 39.0 1.0 0.81 0.12 16.014500 2 44 99.0 39.0 1.45 0.32 17.014500 2 45 99.0 39.0 1.72 0.28 18.014500 2 46 99.0 39.0 0.47 0.19 19.014500 2 47 99.0 40.0 2.38 0.29 20.014500 2 48 99.0 40.0 2.23 0.26 21.014500 2 49 136.0 52.0 1.26 0.19 22.014500 2 50 136.0 53.0 0.0 0.68 0.50 23.014500 2 51 136.0 53.0 1.0 1.96 0.29 24.014500 2 52 138.0 54.0 5.00 0.62 25.014500 2 53 139.0 54.0 5.15 0.57 26.014500 2 54 140.0 54.0 2.66 0.40 27.014500 2 55 140.0 55.0 5.87 0.65 28.014500 2 56 142.0 55.0 3.56 0.46 29.014500 2 57 143.0 56.0 5.47 0.68 30.014500 2 58 144.0 56.0 3.11 0.35 31.014500 2 59 144.0 57.0 3.82 0.41 32.014500 2 60 146.0 57.0 1.0 0.71 0.13 33.014500 2 61 146.0 57.0 1.21 0.22 34.014500 2 62 ENDDATA 36 0 14500 2 63 ENDSUBENT 62 0 14500 299999 SUBENT 14500003 20180404 144014500 3 1 BIB 4 16 14500 3 2 REACTION (92-U-238(N,F)ELEM/MASS,CUM,FY) 14500 3 3 SAMPLE (92-U-238,ENR=0.995) Metal, 0.2083 grams, from PNNL. 14500 3 4 ERR-ANALYS (ERR-T) Errors include the uncertainty from the 14500 3 5 half-life, branching ratio, irradiation time, 14500 3 6 dead-time, and counting statistics, branching ratios. 14500 3 7 (ERR-1) The detector efficiencies of each HPGe 14500 3 8 detector (east, west, and vert). 14500 3 9 (ERR-2,1.,10.) Half-life (T1/2). 14500 3 10 (ERR-3,0.1,5.) Branching ratio. 14500 3 11 (ERR-4) Irradiation time. 14500 3 12 (ERR-5) Counting time. 14500 3 13 (ERR-6) Target mass. 14500 3 14 (ERR-7,1.,10.) Self-shielding (CFSS). 14500 3 15 (ERR-8,0.5,2.) Dead-time (CFDT). 14500 3 16 (ERR-9) Fission rate. 14500 3 17 STATUS (TABLE) Table V, page 183. 14500 3 18 ENDBIB 16 0 14500 3 19 COMMON 5 3 14500 3 20 ERR-1 ERR-4 ERR-5 ERR-6 ERR-9 14500 3 21 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 14500 3 22 1.1 0.1 0.1 0.1 7.03 14500 3 23 ENDCOMMON 3 0 14500 3 24 DATA 6 34 14500 3 25 MASS ELEMENT ISOMER DATA ERR-T DECAY-FLAG 14500 3 26 NO-DIM NO-DIM NO-DIM PC/FIS PC/FIS NO-DIM 14500 3 27 84.0 33.0 0.46 0.05 1.014500 3 28 86.0 34.0 0.63 0.07 2.014500 3 29 86.0 34.0 0.56 0.08 3.014500 3 30 86.0 35.0 1.17 0.09 4.014500 3 31 87.0 35.0 2.54 0.22 5.014500 3 32 88.0 35.0 1.53 0.15 6.014500 3 33 89.0 36.0 3.23 0.48 7.014500 3 34 90.0 36.0 2.93 0.27 8.014500 3 35 92.0 36.0 2.12 0.21 9.014500 3 36 94.0 37.0 2.92 0.29 10.014500 3 37 94.0 37.0 3.27 0.30 11.014500 3 38 94.0 38.0 4.34 0.35 12.014500 3 39 95.0 38.0 4.22 0.39 13.014500 3 40 96.0 38.0 3.62 0.37 14.014500 3 41 96.0 39.0 1.0 0.60 0.06 15.014500 3 42 97.0 39.0 1.0 2.01 0.17 16.014500 3 43 99.0 39.0 3.84 0.50 17.014500 3 44 99.0 39.0 2.90 0.26 18.014500 3 45 99.0 39.0 2.51 0.24 19.014500 3 46 99.0 40.0 6.84 0.61 20.014500 3 47 99.0 40.0 5.86 0.50 21.014500 3 48 136.0 52.0 1.29 0.15 22.014500 3 49 136.0 53.0 0.0 1.57 0.15 23.014500 3 50 136.0 53.0 1.0 1.91 0.16 24.014500 3 51 138.0 54.0 5.07 0.42 25.014500 3 52 139.0 54.0 4.19 0.60 26.014500 3 53 140.0 54.0 2.52 0.30 27.014500 3 54 140.0 55.0 6.21 0.54 28.014500 3 55 142.0 55.0 2.55 0.29 29.014500 3 56 143.0 56.0 6.44 0.57 30.014500 3 57 144.0 56.0 2.46 0.24 31.014500 3 58 144.0 57.0 3.64 0.34 32.014500 3 59 146.0 57.0 1.0 0.69 0.15 33.014500 3 60 146.0 57.0 1.69 0.25 34.014500 3 61 ENDDATA 36 0 14500 3 62 ENDSUBENT 61 0 14500 399999 SUBENT 14500004 20180404 144014500 4 1 BIB 4 16 14500 4 2 REACTION (92-U-235(N,F)ELEM/MASS,CUM,FY) 14500 4 3 SAMPLE (92-U-235,ENR=0.9995) Metal, 0.2113 grams, from PNNL. 14500 4 4 ERR-ANALYS (ERR-T) Errors include the uncertainty from the 14500 4 5 half-life, branching ratio, irradiation time, 14500 4 6 dead-time, and counting statistics, branching ratios. 14500 4 7 (ERR-1) The detector efficiencies of each HPGe 14500 4 8 detector (east, west, and vert). 14500 4 9 (ERR-2,1.,10.) Half-life (T1/2). 14500 4 10 (ERR-3,0.1,5.) Branching ratio. 14500 4 11 (ERR-4) Irradiation time. 14500 4 12 (ERR-5) Counting time. 14500 4 13 (ERR-6) Target mass. 14500 4 14 (ERR-7,1.,10.) Self-shielding (CFSS). 14500 4 15 (ERR-8,0.5,2.) Dead-time (CFDT). 14500 4 16 (ERR-9) Fission rate. 14500 4 17 STATUS (TABLE) Table VI, page 184. 14500 4 18 ENDBIB 16 0 14500 4 19 COMMON 5 3 14500 4 20 ERR-1 ERR-4 ERR-5 ERR-6 ERR-9 14500 4 21 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 14500 4 22 1.1 0.1 0.1 0.1 10.75 14500 4 23 ENDCOMMON 3 0 14500 4 24 DATA 6 33 14500 4 25 MASS ELEMENT ISOMER DATA ERR-T DECAY-FLAG 14500 4 26 NO-DIM NO-DIM NO-DIM PC/FIS PC/FIS NO-DIM 14500 4 27 84.0 33.0 0.21 0.03 1.014500 4 28 86.0 34.0 0.40 0.06 2.014500 4 29 86.0 34.0 0.34 0.06 3.014500 4 30 86.0 35.0 1.31 0.14 4.014500 4 31 87.0 35.0 1.95 0.23 5.014500 4 32 88.0 35.0 0.94 0.12 6.014500 4 33 89.0 36.0 4.38 0.72 7.014500 4 34 90.0 36.0 3.53 0.43 8.014500 4 35 92.0 36.0 0.96 0.12 9.014500 4 36 94.0 37.0 0.98 0.13 10.014500 4 37 94.0 37.0 1.37 0.18 11.014500 4 38 94.0 38.0 4.10 0.46 12.014500 4 39 95.0 38.0 3.46 0.44 13.014500 4 40 96.0 38.0 1.87 0.24 14.014500 4 41 96.0 39.0 1.0 1.05 0.13 15.014500 4 42 97.0 39.0 1.0 1.82 0.22 16.014500 4 43 99.0 39.0 1.83 0.33 17.014500 4 44 99.0 39.0 0.33 0.09 18.014500 4 45 99.0 39.0 0.00 0.06 19.014500 4 46 99.0 40.0 4.35 0.53 20.014500 4 47 99.0 40.0 4.36 0.51 21.014500 4 48 136.0 52.0 0.40 0.06 22.014500 4 49 136.0 53.0 0.0 0.05 0.05 23.014500 4 50 136.0 53.0 1.0 1.47 0.17 24.014500 4 51 138.0 54.0 3.30 0.39 25.014500 4 52 139.0 54.0 2.92 0.49 26.014500 4 53 140.0 54.0 0.62 0.11 27.014500 4 54 140.0 55.0 3.41 0.40 28.014500 4 55 143.0 56.0 2.22 0.29 30.014500 4 56 144.0 56.0 1.18 0.16 31.014500 4 57 144.0 57.0 2.61 0.33 32.014500 4 58 146.0 57.0 1.0 0.60 0.11 33.014500 4 59 146.0 57.0 0.49 0.13 34.014500 4 60 ENDDATA 35 0 14500 4 61 ENDSUBENT 60 0 14500 499999 ENDENTRY 4 0 1450099999999