ENTRY 14678 20210212 148114678 0 1 SUBENT 14678001 20210212 148114678 1 1 BIB 10 34 14678 1 2 TITLE Measurement of neutron capture cross section of 187W 14678 1 3 for production of 188W 14678 1 4 AUTHOR (O.A.Ersoz,R.Spink,J.R.Griswold,F.Yurt,S.Mirzadeh) 14678 1 5 INSTITUTE (1USAMHG,1USAORL) 14678 1 6 (2TUKTUK) Ege University,Bornova,Izmir 14678 1 7 REFERENCE (J,ARI,148,191,2019) 14678 1 8 FACILITY (REAC,1USAORL) Irradiations were made in the core of 14678 1 9 ORNL High Flux Isotope Reactor (HFIR) 14678 1 10 SAMPLE Enriched 186W sample in form of WO3 was encapsulated 14678 1 11 in synthetic quartz ampoule with inner diameter 3 mm, 14678 1 12 outer diameter 5 mm and length of 20 mm. Eight targets 14678 1 13 with 186W masses from 1.97 mg to 18.23 mg 14678 1 14 were prepared as follows. 14678 1 15 Activ 188W 14678 1 16 Target No. 186W mass Irrad. time flux at EOB 14678 1 17 (mg) n/cm2/s MBq/mg 186W14678 1 18 1 18.23 5 m 2E+14 14678 1 19 2 1.97 55 m 2E+14 14678 1 20 3a 7.89 1 d 2E+15 4.1+-0.8 14678 1 21 3b 7.34 1 d 2E+15 3.3+-0.8 14678 1 22 4a 7.37 5 d 1.95E+15 52+-3 14678 1 23 4b 10.3 5 d 1.95E+15 49+-3 14678 1 24 5a 7.65 10 d 2E+15 96+-6 14678 1 25 5b 8.37 10 d 2E+15 100+-6 14678 1 26 (74-W-182,ENR=0.0026) 14678 1 27 (74-W-183,ENR=0.0022) 14678 1 28 (74-W-184,ENR=0.0108) 14678 1 29 (74-W-186,ENR=0.9844) 14678 1 30 DETECTOR (HPGE) Radioactivity was measured using 100 cm3 HPGe 14678 1 31 detector Canberra Model GC2020 High-Purity Germanium 14678 1 32 detector. Detector resolution was 1.9 keV at 1332 keV. 14678 1 33 INC-SOURCE (REAC) 14678 1 34 ERR-ANALYS (DATA-ERR) Origin of uncertainties not described 14678 1 35 HISTORY (20210212C) Compiled by S.H. 14678 1 36 ENDBIB 34 0 14678 1 37 NOCOMMON 0 0 14678 1 38 ENDSUBENT 37 0 14678 199999 SUBENT 14678002 20210212 148114678 2 1 BIB 5 13 14678 2 2 REACTION (74-W-186(N,G)74-W-187,,SIG,,MXW,DERIV) 14678 2 3 Average value from two measurements 14678 2 4 METHOD (ACTIV) Activities were decay-corrected to obtain the 14678 2 5 activities at the end of bombardment 14678 2 6 ANALYSIS Derived from the measured effective cross section 14678 2 7 assuming RI/sigma0=12.6+/-0.4. 14678 2 8 Average value of target 1 and target 2 14678 2 9 DECAY-DATA (74-W-187,23.9HR,DG,134.25,0.0885, 14678 2 10 DG,479.55,0.218, 14678 2 11 DG,551.52,0.0508, 14678 2 12 DG,685.74,0.273, 14678 2 13 DG,772.89,0.0412) 14678 2 14 STATUS (TABLE) Data taken from tab.4 of the reference 14678 2 15 ENDBIB 13 0 14678 2 16 NOCOMMON 0 0 14678 2 17 DATA 3 1 14678 2 18 EN-DUMMY DATA DATA-ERR 14678 2 19 EV B B 14678 2 20 0.0253 37.8 1.8 14678 2 21 ENDDATA 3 0 14678 2 22 ENDSUBENT 21 0 14678 299999 SUBENT 14678003 20210212 148114678 3 1 BIB 6 13 14678 3 2 REACTION (74-W-186(N,G)74-W-187,,RI,,,DERIV) 14678 3 3 METHOD (ACTIV) Activities were decay-corrected to obtain the 14678 3 4 activities at the end of bombardment 14678 3 5 ANALYSIS Derived from the measured effective cross section 14678 3 6 assuming RI/sigma0=12.6+/-0.4 14678 3 7 DECAY-DATA (74-W-187,23.9HR,DG,134.25,0.0885, 14678 3 8 DG,479.55,0.218, 14678 3 9 DG,551.52,0.0508, 14678 3 10 DG,685.74,0.273, 14678 3 11 DG,772.89,0.0412) 14678 3 12 FLAG (1.) Measured with target 1 14678 3 13 (2.) Measured with target 2 14678 3 14 STATUS (TABLE) Data taken from tab.4 of the reference 14678 3 15 ENDBIB 13 0 14678 3 16 NOCOMMON 0 0 14678 3 17 DATA 4 2 14678 3 18 EN-MIN DATA DATA-ERR FLAG 14678 3 19 EV B B NO-DIM 14678 3 20 0.5 478. 24. 1. 14678 3 21 0.5 475. 26. 2. 14678 3 22 ENDDATA 4 0 14678 3 23 ENDSUBENT 22 0 14678 399999 SUBENT 14678004 20210212 148114678 4 1 BIB 5 12 14678 4 2 REACTION (74-W-187(N,G)74-W-188,,SIG,,MXW,DERIV) 14678 4 3 DECAY-DATA (74-W-188,69.4D,DG,227.09,0.00221, 14678 4 4 DG,290.67,0.00402) 14678 4 5 METHOD (ACTIV) 14678 4 6 ANALYSIS Derived from the measured effective cross section 14678 4 7 assuming RI/sigma0=43. 14678 4 8 Due to relative short half-life of target 14678 4 9 nucleus, the cross section was determined by least 14678 4 10 squares fit between theoretical and experimental 14678 4 11 yields, keeping all parameters constant except 14678 4 12 measured cross section. 14678 4 13 STATUS (TABLE) Data taken from text, p.195 of the reference 14678 4 14 ENDBIB 12 0 14678 4 15 NOCOMMON 0 0 14678 4 16 DATA 3 1 14678 4 17 EN-DUMMY DATA DATA-ERR 14678 4 18 EV B B 14678 4 19 0.0253 6.5 0.8 14678 4 20 ENDDATA 3 0 14678 4 21 ENDSUBENT 20 0 14678 499999 ENDENTRY 4 0 1467899999999