ENTRY 30833 20230706 3083300000001 SUBENT 30833001 20230706 20240316 3083300100001 BIB 12 39 3083300100002 TITLE Measurement of thermal neutron cross section and 3083300100003 resonance integral for the 170Er(n,g)171Er reaction 3083300100004 by using a gold monitor 3083300100005 AUTHOR (V.D.Nguyen, D.K.Pham, T.T.Kim, T.H.Nguyen, G.N.Kim, 3083300100006 S.C.Yang, K.S.Kim, S.G.Shin, M.H.Cho, M.W.Lee) 3083300100007 INSTITUTE (3VN IPH,3KORKNU,3KORPUE,3KORDRM) 3083300100008 REFERENCE (J,NIM/B,310,10,2013) 3083300100009 FACILITY (LINAC,3KORPUE) Pohang Neutron Facility 3083300100010 INC-SOURCE (PHOTO) Ta(g,n) photonuclear reaction 3083300100011 SAMPLE Natural Erbium foil 3083300100012 - Size: 10 x 10 mm 3083300100013 - Purity: 99.9% 3083300100014 - Thickness: 0.025 mm 3083300100015 - Weight: 0.0354 g, 0.0378 g 3083300100016 Natural Au foil 3083300100017 - Size: 10 x 10 mm 3083300100018 - Purity: 99.95% 3083300100019 - Thickness: 0.03 mm 3083300100020 - Weight: 0.0489 g, 0.0463 g 3083300100021 Natural In for the neutron flux monitoring 3083300100022 - Size: 10 x 10 mm 3083300100023 - Purity: 99.95% 3083300100024 - Thickness: 0.05 mm 3083300100025 - Weight: 0.0393 g, 0.0396 g, 0.0371 g, 0.0380 g, 3083300100026 0.0370 g, 0.0379 g 3083300100027 The natural Ho and Au foils were irradiated with and 3083300100028 without a Cd cover with a thickness of 0.5 mm. 3083300100029 METHOD (ACTIV) Irradiated for 180 minute 3083300100030 (GSPEC) Measuring time based on the activity and the 3083300100031 half-life of each radioactive isotope 3083300100032 DETECTOR (HPGE) To count gammas of reaction products 1.8 keV 3083300100033 FWHM at 1332.5 keV peak of 60Co, efficiency of 20% 3083300100034 relative to NaI(Tl) detector for the peak 3083300100035 REL-REF (R,,E.Browne+,B,BROWNE,,,2004) WWW Version 2.1 3083300100036 STATUS (TABLE) Table 6 of Nucl.Instrum.Meth.B310(2013)10 3083300100037 (APRVD) Approved by G.N.Kim (2013-11-15) 3083300100038 HISTORY (20130826C) S.C.Yang 3083300100039 (20171006U) VS. Corrections in ERR-ANALYS in 002. 3083300100040 (20230706A) VT+On. Revision in 003 3083300100041 ENDBIB 39 0 3083300100042 NOCOMMON 0 0 3083300100043 ENDSUBENT 42 0 3083300199999 SUBENT 30833002 20171006 31803083300200001 BIB 7 23 3083300200002 REACTION (68-ER-170(N,G)68-ER-171,,SIG) 3083300200003 DECAY-DATA (68-ER-171,7.516HR,DG,295.90,0.289, 3083300200004 DG,308.31,0.644) 3083300200005 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 3083300200006 DECAY-MON (79-AU-198-G,2.69517D,DG,411.80,0.9558) 3083300200007 MONIT-REF (,S.Mughabghab,R,INDC(NDS)-440,2003) 3083300200008 ERR-ANALYS (ERR-T) Total uncertainty: 4.55% 3083300200009 (ERR-1) Geometry, Er (0.50%)3083300200010 (ERR-2) Detection efficiency, Er (2.23%)3083300200011 (ERR-3) Mass (foil weight, Er (0.20%)3083300200012 (ERR-4) Half-life, Er (0.027%)3083300200013 (ERR-5) Gamma-ray intensity, Er (2.56%)3083300200014 (ERR-6) Thermal neutron self-shielding, Er (0.48%)3083300200015 (ERR-7) Coincidence summing effect, Er (1.04%)3083300200016 (ERR-8,,,U) Statistical error, Er (1.02%)3083300200017 (ERR-9) Geometry, Au (0.50%)3083300200018 (ERR-10) Detection efficiency, Au (2.41%)3083300200019 (ERR-11) Mass (foil weight, Au (0.20%)3083300200020 (ERR-12) Half-life, Au (0.008%)3083300200021 (ERR-13) Thermal neutron self-shielding, Au (0.52%)3083300200022 (ERR-14,,,U)Statistical error, Au (0.46%)3083300200023 (MONIT-ERR) Reference thermal cross section, Au (0.09%)3083300200024 HISTORY (20171006U) VS. Corrections in ERR-ANALYS 3083300200025 ENDBIB 23 0 3083300200026 COMMON 14 9 3083300200027 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 3083300200028 ERR-7 ERR-8 ERR-9 ERR-10 ERR-11 ERR-12 3083300200029 ERR-13 ERR-14 3083300200030 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3083300200031 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3083300200032 PER-CENT PER-CENT 3083300200033 0.50 2.23 0.20 0.027 2.56 0.48 3083300200034 1.04 1.02 0.50 2.41 0.20 0.008 3083300200035 0.52 0.46 3083300200036 ENDCOMMON 9 0 3083300200037 DATA 5 1 3083300200038 EN-DUMMY DATA ERR-T MONIT MONIT-ERR 3083300200039 EV B B B B 3083300200040 0.0253 7.80 0.35 98.65 0.09 3083300200041 ENDDATA 3 0 3083300200042 ENDSUBENT 41 0 3083300299999 SUBENT 30833003 20230706 20240316 3083300300001 BIB 7 27 3083300300002 REACTION (68-ER-170(N,G)68-ER-171,,RI) 3083300300003 DECAY-DATA (68-ER-171,7.516HR,DG,295.90,0.289, 3083300300004 DG,308.31,0.644) 3083300300005 ANALYSIS The alpha-shape factor was experimentally determined 3083300300006 by dual monitor method using measured cadmium ratios 3083300300007 of the 197Au(n,g)198Au and 186W(n,g)187W reactions. It 3083300300008 was derived from the Eq.(6) of J,NIM/B,310,10,2013. 3083300300009 ASSUMED (ASSUM1,79-AU-197(N,G)79-AU-198,,SIG) 3083300300010 (ASSUM2,79-AU-197(N,G)79-AU-198,,RI) 3083300300011 (ASSUM3,68-ER-170(N,G)68-ER-171,,SIG) 3083300300012 REL-REF (R,,S.F.Mughabghab,R,INDC(NDS)-440,2003) 3083300300013 Au thermal cross section and resonance integral given 3083300300014 ERR-ANALYS (ERR-T) Total uncertainty: 6.88% 3083300300015 (ERR-1) Epithermal neutron self-shielding,Er (1.02%) 3083300300016 (ERR-2) Thermal neutron self-shielding, Er (0.48%) 3083300300017 (ERR-3) Coincidence summing effect, Er (1.04%) 3083300300018 (ERR-4) Cadmium ratio, Er (1.27%) 3083300300019 (ERR-5) Alpha-shape factor, Er (3.35%) 3083300300020 (ERR-6) Epithermal neutron self-shielding,Au (1.79%) 3083300300021 (ERR-7) Thermal neutron self-shielding, Au (0.52%) 3083300300022 (ERR-8) Cadmium ratio, Au (1.49%) 3083300300023 (ERR-9) Alpha-shape factor, Au (3.50%) 3083300300024 (ASSUM1-ERR) Reference thermal cross-section, Au(0.09%)3083300300025 (ASSUM2-ERR) Reference resonance integral, Au (1.81%)3083300300026 (ASSUM3-ERR) Reference thermal cross-section, Er(3.31%)3083300300027 HISTORY (20230706A) VT+On. DATA: ASSUM1-ERR, ASSUM2-ERR and 3083300300028 ASSUM3-ERR deleted to avoid repetition of heading. 3083300300029 ENDBIB 27 0 3083300300030 COMMON 12 6 3083300300031 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 3083300300032 ERR-7 ERR-8 ERR-9 ASSUM1-ERR ASSUM2-ERR ASSUM3-ERR 3083300300033 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3083300300034 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3083300300035 1.02 0.48 1.04 1.27 3.35 1.79 3083300300036 0.52 1.49 3.50 0.09 1.81 3.31 3083300300037 ENDCOMMON 6 0 3083300300038 DATA 6 1 3083300300039 EN-MIN DATA ERR-T ASSUM1 ASSUM2 ASSUM3 3083300300040 EV B B B B B 3083300300041 0.55 40.4 2.8 98.65 1550. 7.803083300300042 ENDDATA 3 0 3083300300043 ENDSUBENT 42 0 3083300399999 ENDENTRY 2 0 3083399999999