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