ENTRY 14678 20210212 14811467800000001 SUBENT 14678001 20210212 14811467800100001 BIB 10 34 1467800100002 TITLE Measurement of neutron capture cross section of 187W 1467800100003 for production of 188W 1467800100004 AUTHOR (O.A.Ersoz,R.Spink,J.R.Griswold,F.Yurt,S.Mirzadeh) 1467800100005 INSTITUTE (1USAMHG,1USAORL) 1467800100006 (2TUKTUK) Ege University,Bornova,Izmir 1467800100007 REFERENCE (J,ARI,148,191,2019) 1467800100008 FACILITY (REAC,1USAORL) Irradiations were made in the core of 1467800100009 ORNL High Flux Isotope Reactor (HFIR) 1467800100010 SAMPLE Enriched 186W sample in form of WO3 was encapsulated 1467800100011 in synthetic quartz ampoule with inner diameter 3 mm, 1467800100012 outer diameter 5 mm and length of 20 mm. Eight targets 1467800100013 with 186W masses from 1.97 mg to 18.23 mg 1467800100014 were prepared as follows. 1467800100015 Activ 188W 1467800100016 Target No. 186W mass Irrad. time flux at EOB 1467800100017 (mg) n/cm2/s MBq/mg 186W1467800100018 1 18.23 5 m 2E+14 1467800100019 2 1.97 55 m 2E+14 1467800100020 3a 7.89 1 d 2E+15 4.1+-0.8 1467800100021 3b 7.34 1 d 2E+15 3.3+-0.8 1467800100022 4a 7.37 5 d 1.95E+15 52+-3 1467800100023 4b 10.3 5 d 1.95E+15 49+-3 1467800100024 5a 7.65 10 d 2E+15 96+-6 1467800100025 5b 8.37 10 d 2E+15 100+-6 1467800100026 (74-W-182,ENR=0.0026) 1467800100027 (74-W-183,ENR=0.0022) 1467800100028 (74-W-184,ENR=0.0108) 1467800100029 (74-W-186,ENR=0.9844) 1467800100030 DETECTOR (HPGE) Radioactivity was measured using 100 cm3 HPGe 1467800100031 detector Canberra Model GC2020 High-Purity Germanium 1467800100032 detector. Detector resolution was 1.9 keV at 1332 keV. 1467800100033 INC-SOURCE (REAC) 1467800100034 ERR-ANALYS (DATA-ERR) Origin of uncertainties not described 1467800100035 HISTORY (20210212C) Compiled by S.H. 1467800100036 ENDBIB 34 0 1467800100037 NOCOMMON 0 0 1467800100038 ENDSUBENT 37 0 1467800199999 SUBENT 14678002 20210212 14811467800200001 BIB 5 13 1467800200002 REACTION (74-W-186(N,G)74-W-187,,SIG,,MXW,DERIV) 1467800200003 Average value from two measurements 1467800200004 METHOD (ACTIV) Activities were decay-corrected to obtain the 1467800200005 activities at the end of bombardment 1467800200006 ANALYSIS Derived from the measured effective cross section 1467800200007 assuming RI/sigma0=12.6+/-0.4. 1467800200008 Average value of target 1 and target 2 1467800200009 DECAY-DATA (74-W-187,23.9HR,DG,134.25,0.0885, 1467800200010 DG,479.55,0.218, 1467800200011 DG,551.52,0.0508, 1467800200012 DG,685.74,0.273, 1467800200013 DG,772.89,0.0412) 1467800200014 STATUS (TABLE) Data taken from tab.4 of the reference 1467800200015 ENDBIB 13 0 1467800200016 NOCOMMON 0 0 1467800200017 DATA 3 1 1467800200018 EN-DUMMY DATA DATA-ERR 1467800200019 EV B B 1467800200020 0.0253 37.8 1.8 1467800200021 ENDDATA 3 0 1467800200022 ENDSUBENT 21 0 1467800299999 SUBENT 14678003 20210212 14811467800300001 BIB 6 13 1467800300002 REACTION (74-W-186(N,G)74-W-187,,RI,,,DERIV) 1467800300003 METHOD (ACTIV) Activities were decay-corrected to obtain the 1467800300004 activities at the end of bombardment 1467800300005 ANALYSIS Derived from the measured effective cross section 1467800300006 assuming RI/sigma0=12.6+/-0.4 1467800300007 DECAY-DATA (74-W-187,23.9HR,DG,134.25,0.0885, 1467800300008 DG,479.55,0.218, 1467800300009 DG,551.52,0.0508, 1467800300010 DG,685.74,0.273, 1467800300011 DG,772.89,0.0412) 1467800300012 FLAG (1.) Measured with target 1 1467800300013 (2.) Measured with target 2 1467800300014 STATUS (TABLE) Data taken from tab.4 of the reference 1467800300015 ENDBIB 13 0 1467800300016 NOCOMMON 0 0 1467800300017 DATA 4 2 1467800300018 EN-MIN DATA DATA-ERR FLAG 1467800300019 EV B B NO-DIM 1467800300020 0.5 478. 24. 1. 1467800300021 0.5 475. 26. 2. 1467800300022 ENDDATA 4 0 1467800300023 ENDSUBENT 22 0 1467800399999 SUBENT 14678004 20210212 14811467800400001 BIB 5 12 1467800400002 REACTION (74-W-187(N,G)74-W-188,,SIG,,MXW,DERIV) 1467800400003 DECAY-DATA (74-W-188,69.4D,DG,227.09,0.00221, 1467800400004 DG,290.67,0.00402) 1467800400005 METHOD (ACTIV) 1467800400006 ANALYSIS Derived from the measured effective cross section 1467800400007 assuming RI/sigma0=43. 1467800400008 Due to relative short half-life of target 1467800400009 nucleus, the cross section was determined by least 1467800400010 squares fit between theoretical and experimental 1467800400011 yields, keeping all parameters constant except 1467800400012 measured cross section. 1467800400013 STATUS (TABLE) Data taken from text, p.195 of the reference 1467800400014 ENDBIB 12 0 1467800400015 NOCOMMON 0 0 1467800400016 DATA 3 1 1467800400017 EN-DUMMY DATA DATA-ERR 1467800400018 EV B B 1467800400019 0.0253 6.5 0.8 1467800400020 ENDDATA 3 0 1467800400021 ENDSUBENT 20 0 1467800499999 ENDENTRY 4 0 1467899999999