ENTRY 23232 20200117 22852323200000001 SUBENT 23232001 20200117 22852323200100001 BIB 15 91 2323200100002 TITLE Measurement of neutron-capture cross section and 2323200100003 capture gamma-ray spectrum of 105Pd(n,g)106Pd reaction.2323200100004 AUTHOR (T.Wang, M.Lee, G.Kim, T.-I.Ro, Y.-R.Kang, M.Igashira, 2323200100005 T.Katabuchi) 2323200100006 INSTITUTE (2JPNTIT) M.Igashira, T.Katabuchi. 2323200100007 (3CPRBHN) School of Physics and Nuclear Energy 2323200100008 Engineering, Beihang University, Beijing, China - 2323200100009 T.Wang. 2323200100010 (3KORKNU) M.Lee, G.Kim . 2323200100011 (3KORDRM) Research Center, Dong-nam Institute of 2323200100012 Radiological and Medical Sciences, Pusan, Korea - 2323200100013 M.Lee, Y.-R.Kang. 2323200100014 (3KORDAU) T.-I.Ro, Y.-R.Kang 2323200100015 REFERENCE (J,JRN,300,235,2014) 2323200100016 #doi:10.1007/s10967-014-2990-8 2323200100017 REL-REF (I,,T.-I.Ro+,J,KPS,50,1598,2007) 2323200100018 Exp.procedure. 2323200100019 FACILITY (VDGT,2JPNTIT) 3 MV Pelletron accelerator. 2323200100020 INC-SOURCE (P-LI7) Metallic Li target. 1.5-ns bunched proton beam 2323200100021 of about 2.3 MeV energy. The pulse repetition rate 2323200100022 4 MHz, average current of the proton beam 6 microA. 2323200100023 INC-SPECT Normalized incident neutron energy spectra is presented2323200100024 on Fig.2 of J,JRN,200,235,2014. 2323200100025 DETECTOR (NAICR) Large anti-Compton NaI(Tl) spectrometer of 2323200100026 15.2 cm diameter, 30.5 cm length, located 78.5 cm from 2323200100027 the sample at an angle of 125deg with respect to the 2323200100028 proton beam - to detect prompt gamma-rays emitted from 2323200100029 the sample. The long NaI(Tl) scintillator was centered 2323200100030 in hollow Compton-suppression NaI(Tl) detector of 2323200100031 33.0 cm outer diameter, 35.6 cm length. 2323200100032 Spectrometer was set in heavy shield: borated paraffin,2323200100033 borated polyethylene, cadmium, 6LiH and potassium-free 2323200100034 lead. 2323200100035 (GLASD) The incident neutron energy spectra were 2323200100036 measured by a time-of-flight method with a 6Li-glass 2323200100037 scintillation detector of 102 mm diameter, 6.4 mm 2323200100038 thickness. 2323200100039 Small 6Li-glass scintillation detector (diameter 5.0mm,2323200100040 thickness of 5.0 mm) located 30 cm from the 7Li 2323200100041 neutron-generation target served as a monitor of the 2323200100042 neutron generation. 2323200100043 METHOD (TOF) Time-of-flight (TOF) to measure incident neutron 2323200100044 spectrum on capture sample. 2323200100045 Runs with and without the 105Pd sample (sample run and 2323200100046 blank run) and a run with a standard gold sample (gold 2323200100047 run) were made cyclically in each measurement. 2323200100048 (PHD) PH spectra were measured for Pd-105 and Au. 2323200100049 The total measuring times for 105Pd was about 40 h; 2323200100050 for the gold - 9 h, the blank runs - 31 h. 2323200100051 ANALYSIS The energy calibrations of PH spectra were performed 2323200100052 with standard gamma-ray sources (137Cs, 22Na, 60Co) and2323200100053 the background gamma-rays observed in the measurement 2323200100054 [40K: 1.461 MeV, 56Fe(nthermal,gamma)57Fe:7.638 MeV 2323200100055 (weighted average of 7.631 and 7.646 MeV gamma-rays)].2323200100056 The capture yields were obtained by using a 2323200100057 pulse-height weighting technique with the weighting 2323200100058 function of the gamma-ray spectrometer and each of the 2323200100059 net capture gamma-ray pulse-height spectra. 2323200100060 SAMPLE Isotopically enriched 105Pd metal disk of 15mm diameter2323200100061 , about 0.68 mm thickness. 2323200100062 Gold disk of 15mm diameter, 1.0mm thickness was used as2323200100063 a standard sample. 2323200100064 Sample 105Pd 197Au 2323200100065 Weight, g 0.4261 3.4302 2323200100066 Thickness,mm 0.675 1.0 2323200100067 Size, mm2 176.71 176.71 2323200100068 (46-PD-104,ENR=0.0190) 2323200100069 (46-PD-105,ENR=0.9090) 2323200100070 (46-PD-106,ENR=0.0630) 2323200100071 (46-PD-108,ENR=0.0090) 2323200100072 (79-AU-197,NAT=0.9999) 2323200100073 The distance between the 7Li target and the sample was 2323200100074 12 cm. 2323200100075 CORRECTION For backgrounds: natural BG, the time-independent BG 2323200100076 due to neutrons, the time-dependent BG due to neutrons,2323200100077 the tail of (p,gamma) peak. 2323200100078 Correction factors were evaluated considering 2323200100079 different effects coming from neutron self-shielding, 2323200100080 neutron multiple-scattering, gamma-ray scattering, and 2323200100081 gamma-ray absorption in the sample, from the dependence2323200100082 of the gamma-ray detection efficiency on the gamma-ray 2323200100083 source position, from the impurities in the sample, and2323200100084 from the dead time. 2323200100085 ADD-RES (COMP) The neutron-capture cross sections based on the 2323200100086 Hauser-Feshbach statistical model with the dominant 2323200100087 ingredients of level densities described by the 2323200100088 Gilbert-Cameron approach and the gamma-ray transmission2323200100089 coefficients described by gamma-ray strength functions 2323200100090 were calculated. 2323200100091 HISTORY (20140514C) M.M. 2323200100092 (20200117U) SD: SAMPLE corrected; STATUS deleted. 2323200100093 ENDBIB 91 0 2323200100094 NOCOMMON 0 0 2323200100095 ENDSUBENT 94 0 2323200199999 SUBENT 23232002 20140514 22392323200200001 BIB 4 5 2323200200002 REACTION (46-PD-105(N,G)46-PD-106,,SIG,,SPA) 2323200200003 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2323200200004 ERR-ANALYS (DATA-ERR) Not explained. 2323200200005 Errors less 5.% . 2323200200006 STATUS (TABLE) Table 2 of J,JRN,200,235,2014 . 2323200200007 ENDBIB 5 0 2323200200008 NOCOMMON 0 0 2323200200009 DATA 4 1 2323200200010 EN-MEAN EN-RSL-FW DATA DATA-ERR 2323200200011 KEV KEV B B 2323200200012 550. 98.5 0.173 0.069 2323200200013 ENDDATA 3 0 2323200200014 ENDSUBENT 13 0 2323200299999 SUBENT 23232003 20140514 22392323200300001 BIB 4 11 2323200300002 REACTION (46-PD-105(N,G)46-PD-106,,MLT/DE) 2323200300003 Capture gamma-ray spectra, gammas/MeV/capture. 2323200300004 METHOD The capture gamma-ray spectra were derived by unfolding2323200300005 the net capture gamma-ray PH spectra with the FERDOR 2323200300006 computer code and the response matrix of the gamma-ray 2323200300007 spectrometer. 2323200300008 ADD-RES (COMP) Measured data are compared with Empire-3.1 2323200300009 code calculation. 2323200300010 STATUS (UNOBT) 2323200300011 Data are on Fig.6 of J,JRN,200,235,2014 . 2323200300012 Request for the data was sent 15.05.2014 to authors. 2323200300013 ENDBIB 11 0 2323200300014 COMMON 2 3 2323200300015 EN-MEAN EN-RSL-FW 2323200300016 KEV KEV 2323200300017 550. 98.5 2323200300018 ENDCOMMON 3 0 2323200300019 NODATA 0 0 2323200300020 ENDSUBENT 19 0 2323200399999 ENDENTRY 3 0 2323299999999