ENTRY 31849 20220302 32073184900000001 SUBENT 31849001 20220302 32073184900100001 BIB 14 36 3184900100002 TITLE Measurements of the 210gBi to 210mBi activation 3184900100003 ratio for the 209Bi(n,g) reaction with thermal and 3184900100004 epithermal neutrons at the Soreq IRR1 reactor 3184900100005 AUTHOR (A.Shor, L.Weissman, M.Tessler, O.Aviv, Y.Eisen, 3184900100006 G.Feinberg, Y.Mishnayot, A.Plompen, S.Vaintraub) 3184900100007 INSTITUTE (3ISLSOR,3ISLHEB,2ZZZGEL) 3184900100008 REFERENCE (J,PR/C,105,025802,2022) 3184900100009 FACILITY (REAC,3ISLSOR) IRR1 research reactor. 3184900100010 INC-SOURCE (REAC) Thermal neutron flux of 2.5 X 10**13 n/cm2/sec 3184900100011 SAMPLE Two bismuth disc of purity 99.9999%. Each disc was 8 mm3184900100012 in diam. and 1 mm thick, and weighed 0.484(4) g. 3184900100013 Each was placed in a separate quartz flask, where one 3184900100014 of the flasks was covered with 0.5 mm thick Cd foil. 3184900100015 The flasks were placed end to end lenthwise is a known 3184900100016 location near the core at a known flux and gold cadmium3184900100017 ratio 3.1. 3184900100018 DETECTOR (HPGE) The gamma activity of irradiated samples was 3184900100019 measured with HPGe detector with normal efficiency of 3184900100020 31% with respect to a 2-in. X 2-in. NaI. 3184900100021 METHOD (ACTIV) The irradiation divided into three separate 3184900100022 irradiations, the total irradiation time was about 3184900100023 20 hrs. 3184900100024 (GSPEC) Cooling time was 809.0 days without Cd-covered,3184900100025 and 825.8 days with Cd-covered sample. 3184900100026 The gamma activation measurement time is 8.11 days 3184900100027 without Cd-covered and 8.17 days with Cd-covered sample3184900100028 MONITOR (79-AU-197(N,G)79-AU-198,,SIG,,SPA) 3184900100029 MONIT-REF (,,3,ENDF/B-VIII,,2017) ENDF/B-VIII beta4 3184900100030 ERR-ANALYS (ERR-T) The total estimated errors are: 3184900100031 (ERR-1) reactor neutron flux due to possible 3184900100032 fluctuations of the reactor power 7.5% 3184900100033 (ERR-2) exact placement of the sample holder 5% 3184900100034 (ERR-3) The variation of two transitions 1% 3184900100035 STATUS (APRVD) Proof-read by L.Weissman (2022-03-06) 3184900100036 (TABLE) Text(p.7) of Phys.Rev.C,105(2022)025802 3184900100037 HISTORY (20220302C) VT 3184900100038 ENDBIB 36 0 3184900100039 COMMON 3 3 3184900100040 ERR-1 ERR-2 ERR-3 3184900100041 PER-CENT PER-CENT PER-CENT 3184900100042 7.5 5. 1. 3184900100043 ENDCOMMON 3 0 3184900100044 ENDSUBENT 43 0 3184900199999 SUBENT 31849002 20220302 32073184900200001 BIB 3 9 3184900200002 REACTION 1(83-BI-209(N,G)83-BI-210-G,,SIG) 3184900200003 2(83-BI-209(N,G)83-BI-210-M,,SIG) 3184900200004 3(83-BI-209(N,G)83-BI-210,,SIG) 3184900200005 DECAY-DATA1(83-BI-210-G,5.012D) 3184900200006 (84-PO-210,138.3763D,DG,803.,0.0000114) 3184900200007 2(83-BI-210-M,3.04E+06YR,DG,265.6,0.0051, 3184900200008 DG,304.6,0.0028) 3184900200009 RAD-DET 1(84-PO-210,DG) decay gamma emitted following 210Po 3184900200010 alpha decay 3184900200011 ENDBIB 9 0 3184900200012 COMMON 2 3 3184900200013 EN MONIT 3184900200014 EV B 3184900200015 0.0253 87.5 3184900200016 ENDCOMMON 3 0 3184900200017 DATA 6 1 3184900200018 DATA 1ERR-T 1DATA 2ERR-T 2DATA 3ERR-T 33184900200019 MB MB MB MB MB MB 3184900200020 21.6 1.1 22.3 2.8 43.9 3.03184900200021 ENDDATA 3 0 3184900200022 ENDSUBENT 21 0 3184900299999 SUBENT 31849003 20220302 32073184900300001 BIB 1 1 3184900300002 REACTION (83-BI-209(N,G)83-BI-210-G/M,,SIG/RAT) 3184900300003 ENDBIB 1 0 3184900300004 NOCOMMON 0 0 3184900300005 DATA 3 1 3184900300006 EN DATA ERR-T 3184900300007 EV NO-DIM NO-DIM 3184900300008 0.0253 0.97 0.11 3184900300009 ENDDATA 3 0 3184900300010 ENDSUBENT 9 0 3184900399999 SUBENT 31849004 20220302 32073184900400001 BIB 3 9 3184900400002 REACTION 1(83-BI-209(N,G)83-BI-210-G,,SIG,,EPI) 3184900400003 2(83-BI-209(N,G)83-BI-210-M,,SIG,,EPI) 3184900400004 3(83-BI-209(N,G)83-BI-210,,SIG,,EPI) 3184900400005 DECAY-DATA1(83-BI-210-G,5.012D) 3184900400006 (84-PO-210,138.3763D,DG,803.,0.0000114) 3184900400007 2(83-BI-210-M,3.04E+06YR,DG,265.6,0.0051, 3184900400008 DG,304.6,0.0028) 3184900400009 RAD-DET 1(84-PO-210,DG) decay gamma emitted following 210Po 3184900400010 alpha decay 3184900400011 ENDBIB 9 0 3184900400012 COMMON 2 3 3184900400013 EN-MIN MONIT 3184900400014 EV B 3184900400015 0.5 103. 3184900400016 ENDCOMMON 3 0 3184900400017 DATA 6 1 3184900400018 DATA 1ERR-T 1DATA 2ERR-T 2DATA 3ERR-T 33184900400019 MB MB MB MB MB MB 3184900400020 5.4 0.9 5.7 1.0 11.1 1.33184900400021 ENDDATA 3 0 3184900400022 ENDSUBENT 21 0 3184900499999 SUBENT 31849005 20220302 32073184900500001 BIB 3 5 3184900500002 REACTION (83-BI-209(N,G)83-BI-210,,RI,,,DERIV) 3184900500003 ANALYSIS Derived from the epithermal cross section assuming 3184900500004 1/E epithermal neutron energy distribution with the 3184900500005 upper boundary of 2 MeV. 3184900500006 STATUS (DEP,31849004) Epithermal cross section given. 3184900500007 ENDBIB 5 0 3184900500008 NOCOMMON 0 0 3184900500009 DATA 4 1 3184900500010 EN-MIN EN-MAX DATA ERR-T 3184900500011 EV MEV MB MB 3184900500012 0.5 2. 169. 20. 3184900500013 ENDDATA 3 0 3184900500014 ENDSUBENT 13 0 3184900599999 ENDENTRY 5 0 3184999999999