ENTRY 31725 20130403 31593172500000001 SUBENT 31725001 20130403 31593172500100001 BIB 15 45 3172500100002 TITLE Measurement of thermal neutron capture cross-section 3172500100003 and resonance integral for the 165Ho(n,gamma)166gHo 3172500100004 reaction by the activation method 3172500100005 AUTHOR (S.Zolghadri,H.Yousefnia,H.Afarideh,A.Bahrami-Samani, 3172500100006 A.R.Jalilian, M.Ghannadi-Maragheh) 3172500100007 INSTITUTE (3IRNKRJ) 3172500100008 (3IRNIRN) Amirkabir University of Technology, Tehran, 3172500100009 Iran 3172500100010 REFERENCE (J,NIM/B,295,94,2013) 3172500100011 #doi:10.1016/j.nimb.2012.11.013 3172500100012 FACILITY (REAC,3IRNKRJ) Tehran Research Reactor 3172500100013 INC-SPECT The flux at the irradiation position was 3172500100014 2.5 x 10**13 +/- 5% n/cm2/s. 3172500100015 Alpha-shape factor for the epithermal neutron 3172500100016 spectrum was determined by the dual-monitor 3172500100017 method using the measured Cd ratios for 3172500100018 55Mn(n,gamma)56Mn and 59Co(n,gamma)60Co reactions. 3172500100019 Alpha=-0.10 for Ho-166 with uncertainty of 3.91% 3172500100020 Westcott correction factor g=1.0004 for Mn-55, 3172500100021 g=1.0003 for Co-59 and g=1.0020 for Ho-165. 3172500100022 SAMPLE (67-HO-165,NAT=1.) Natural holmium oxide (Ho2O3), 3172500100023 manganese oxide (MnO2)and cobalt oxide (Co3O4) were 3172500100024 mixed and dissolved. The sample was prepared by drying 3172500100025 50 mu-l of the solution. 3172500100026 METHOD Two samples were irradiated with and without 3172500100027 Cd cover(height/diameter =2, wall thickness = 1 mm) 3172500100028 (ACTIV) Irradiation time 10 min 3172500100029 Cooling time 2-4 h 3172500100030 Counting time 10-15 min. 3172500100031 Sample-detector distance 15-20 cm. 3172500100032 CORRECTION .Correction was applied for epithermal neutron 3172500100033 spectrum shaping factor. 3172500100034 .The neutron self-shielding factors were considered 3172500100035 negligible due to the low weight of the sample material3172500100036 DETECTOR (HPGE) A p-type coaxial high-purity germanium 3172500100037 detector with 80% efficiency relative to 3'' x 3'' 3172500100038 NaI(Tl) detector at 1332.501 keV. 3172500100039 MONITOR ((MONIT1)25-MN-55(N,G)25-MN-56,,SIG) 3172500100040 ((MONIT2)27-CO-59(N,G)27-CO-60,,SIG) 3172500100041 DECAY-DATA (67-HO-166-G,1.1165D,DG,80.576,0.0655) 3172500100042 DECAY-MON ((MONIT1)25-MN-56,0.107449D,DG,846.7638,0.9885) 3172500100043 ((MONIT2)27-CO-60,1925.23D,DG,1173.22,0.9985, 3172500100044 DG,1332.492,0.999826) 3172500100045 MONIT-REF (,S.F.Mughabghab,R,INDC(NDS)-440,2003) 3172500100046 HISTORY (20130403C) VS. 3172500100047 ENDBIB 45 0 3172500100048 COMMON 4 3 3172500100049 MONIT1 MONIT1-ERR MONIT2 MONIT2-ERR 3172500100050 B B B B 3172500100051 13.3 0.1 37.18 0.06 3172500100052 ENDCOMMON 3 0 3172500100053 ENDSUBENT 52 0 3172500199999 SUBENT 31725002 20130403 31593172500200001 BIB 3 18 3172500200002 REACTION (67-HO-165(N,G)67-HO-166-G,,SIG) 3172500200003 ERR-ANALYS (ERR-T) Total uncertainties (1.99%) 3172500200004 (ERR-S) Statistical uncertainties Ho-166 (0.42%) 3172500200005 (ERR-1) Detector efficiency Ho-166 (1.52%) 3172500200006 (ERR-2) Sample mass Ho-165 (0.01%) 3172500200007 (ERR-3) Half-live Ho-166 (0.12%) 3172500200008 (ERR-4) Gamma-ray emission probability Ho-166 (1.22%) 3172500200009 (ERR-5) Statistical uncertainties Mn-55 (0.37%) 3172500200010 (ERR-6) Detector efficiency Mn-55 (1.63%) 3172500200011 (ERR-7) Sample mass Mn-55 (0.01%) 3172500200012 (ERR-8) Half-live Mn-55 (0.018%) 3172500200013 (ERR-9) Gamma-ray emission probability Mn-55 (0.036%) 3172500200014 (ERR-10) Statistical uncertainties Co-60(0.46%) 3172500200015 (ERR-11) Detector efficiency Co-60 (1.72%) 3172500200016 (ERR-12) Sample mass Co-60 (0.01%) 3172500200017 (ERR-13) Half-live Co-60 (0.014%) 3172500200018 (ERR-14) Gamma-ray emission probability Co-60 (0.03%) 3172500200019 STATUS (TABLE) Table 3 of Nucl.Instr.Meth.B295(2013)94 3172500200020 ENDBIB 18 0 3172500200021 NOCOMMON 0 0 3172500200022 DATA 18 1 3172500200023 EN DATA ERR-T ERR-S ERR-1 ERR-2 3172500200024 ERR-3 ERR-4 ERR-5 ERR-6 ERR-7 ERR-8 3172500200025 ERR-9 ERR-10 ERR-11 ERR-12 ERR-13 ERR-14 3172500200026 EV B B PER-CENT PER-CENT PER-CENT 3172500200027 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3172500200028 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3172500200029 0.0253 58.6 1.8 0.42 1.52 0.01 3172500200030 0.12 1.22 0.37 1.63 0.01 0.018 3172500200031 0.036 0.46 1.72 0.01 0.014 0.03 3172500200032 ENDDATA 9 0 3172500200033 ENDSUBENT 32 0 3172500299999 SUBENT 31725003 20130430 31593172500300001 BIB 4 11 3172500300002 REACTION (67-HO-165(N,G)67-HO-166-G,,RI) 3172500300003 MONITOR ((MONIT3)25-MN-55(N,G)25-MN-56,,RI) 3172500300004 ((MONIT4)27-CO-59(N,G)27-CO-60,,RI) 3172500300005 ERR-ANALYS (ERR-T) Total uncertainty 3172500300006 (ERR-1) Alpha-shape par. Ho-166 (3.91%) 3172500300007 (ERR-2) Cadmium ratio Ho-166 (1.32%) 3172500300008 (ERR-3) Alpha-shape par. Mn-55 (4.23%) 3172500300009 (ERR-4) Cadmium ratio Mn-55 (1.47%) 3172500300010 (ERR-5) Alpha-shape par. Co-60 (4.16%) 3172500300011 (ERR-6) Cadmium ratio Co-60 (1.25%) 3172500300012 STATUS (TABLE) Table 3 of Nucl.Instr.Meth.B295(2013)94 3172500300013 ENDBIB 11 0 3172500300014 NOCOMMON 0 0 3172500300015 DATA 13 1 3172500300016 EN-MIN DATA ERR-T MONIT3 MONIT3-ERR MONIT4 3172500300017 MONIT4-ERR ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 3172500300018 ERR-6 3172500300019 EV B B B B B 3172500300020 B PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3172500300021 PER-CENT 3172500300022 0.55 650. 31. 14.0 0.3 75.9 3172500300023 2.0 3.91 1.32 4.23 1.47 4.16 3172500300024 1.25 3172500300025 ENDDATA 9 0 3172500300026 ENDSUBENT 25 0 3172500399999 ENDENTRY 3 0 3172599999999