ENTRY 23081 20090915 22162308100000001 SUBENT 23081001 20090915 22162308100100001 BIB 16 85 2308100100002 TITLE .Measurement of Neutron Capture Cross-Sections of 2308100100003 105Pd with keV-Neutrons Produced by Using a Pulsed 2308100100004 Proton Beam 2308100100005 AUTHOR (T.-I.Ro, B.R.Park, Y.-R.Rank, H.Kim, W.-C.Chung, 2308100100006 K.Kim, G.Kim, Y.Oh, S.Lee, M.Igashira, T.Ohsaki) 2308100100007 INSTITUTE (2JPNTIT) M.Igashira, T.Ohsaki, Research Laboratory 2308100100008 for Nuclear Reactors, Tokyo Institute of Technology, 2308100100009 Tokyo, Japan. Experimental site. 2308100100010 (3KORDAU) T.-I.Ro, B.R.Park, Y.-R.Rank, H.Kim, 2308100100011 W.-C.Chung, Department of Physics, Dong-A University,2308100100012 Busan, Korea 2308100100013 (3KORKNU) K.Kim, G.Kim - corresponding author, Email= 2308100100014 gnkim@knu.ac.kr. Department of Physics, Kyungpook 2308100100015 National University, Daegu 2308100100016 (3KORPUE) Y.Oh, Pohang Accelerator Laboratory, Pohang 2308100100017 University of Science and Technology 2308100100018 (3KORKOR) S.Lee, Department of Physics, Nambu 2308100100019 University, Gwangju 2308100100020 REFERENCE (J,NSTS,5,443,2008) Main reference, table and graph 2308100100021 of cross section, graphs of gamma spectra 2308100100022 (J,KPS,50,(5),1598,200705) N-Gamma cross section for 2308100100023 10 - 90 keV energy interval 2308100100024 REL-REF (M,22932001,G.N.Kim+,J,KPS,48,835,2006) Experimental 2308100100025 details 2308100100026 (M,22767001,H.Kim+,J,KPS,45,1474,2004) Experimental 2308100100027 details 2308100100028 (E,,R.L.Macklin+,J,PR,159,1007,1967) Pulse-height 2308100100029 weighting technique 2308100100030 (E,,K.Senoo+,J,NIM/A,339,556,1994) Monte-Carlo code 2308100100031 for neutron correction calculation 2308100100032 FACILITY (VDGT,2JPNTIT) 3-MV Pelletron accelerator of the 2308100100033 Research Laboratory for Nuclear Reactors at the Tokyo 2308100100034 Institute of Technology 2308100100035 INC-SOURCE (P-LI7) 7Li(p,n)7Be reaction by bombarding the lithium 2308100100036 target on the copper backing with a 1.5 ns bunched 2308100100037 proton beam. Diameter of lithium layer is 20 mm, 2308100100038 thickness of few microns. 2308100100039 METHOD (TOF) Time-of-flight 2308100100040 (PHD) Pulse height discrimination 2308100100041 PART-DET (N,G) 2308100100042 DETECTOR (NAICR) Anti-Compton NaI(TL) spectrometer located 2308100100043 86 cm from the sample at an angle of 125 degrees with 2308100100044 respect to the proton beam's direction. The main 2308100100045 detector of the spectrometer was a 15.2-cm-diameter 2308100100046 20.3-cm-long NaI(TL) detector and was centered in a 2308100100047 large hollow Compton-suppression NaI(TL) detector 2308100100048 with an outer diameter of 33.0 cm and a length of 2308100100049 35.6 cm. The energy resolution of the main detector 2308100100050 was 7.0 % (FWHM) at 0.662 MeV, and the time resolution2308100100051 was 4.0 ns (FWHM) for 0.511-MeV gamma-rays. 2308100100052 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2308100100053 MONIT-REF (,P.G.Young+,3,ENDF/B-VII.0,7925,2006) 2308100100054 http://www.nndc.bnl.gov/nndc/endf/ (2006). 2308100100055 SAMPLE .Isotopically enriched palladium metal powder in carbon2308100100056 case. Weight 0.4261 gram, thickness 0.675 mm, sample 2308100100057 area 176.71 mm2. Isotopic composition: 2308100100058 (46-PD-104,ENR=0.0190) 2308100100059 (46-PD-105,ENR=0.9090) 2308100100060 (46-PD-106,ENR=0.0630) 2308100100061 (46-PD-108,ENR=0.0090) 2308100100062 .Gold monitor sample: weight 3.430 gram, 1.0 mm thick, 2308100100063 area 176.1 mm2, chemical purity 99,99%, Au-197 100% 2308100100064 CORRECTION .Corrected for the attenuation by the 105Pd and the 2308100100065 197Au sample runs, respectively, for effects coming 2308100100066 from the neutron self-shielding and multiple-scatte- 2308100100067 ring, for the gamma-ray scattering and absorption in 2308100100068 the sample, from the dependence of the gamma-ray 2308100100069 detection efficiency on the gamma-ray source position,2308100100070 for the impurities in sample, and for the dead time. 2308100100071 Corrections for the neutron self-shielding and mul- 2308100100072 tiple-scattering were made by using a Monte-Carlo 2308100100073 method, see REL-REF, K.Senoo+. Correction coeffs are 2308100100074 given in Table 2 of main ref. 2308100100075 ERR-ANALYS .Total Error aprx. 4.00% includes: 2308100100076 (ERR-S,0.3,0.6) max.statistical error - 0.6%; 2308100100077 (MONIT-ERR) Error of the standard Au-197 cross-section;2308100100078 (ERR-1,,1.) Max. error of the target nuclei number 1%;2308100100079 (ERR-2) Error of the weighting function of the gamma 2308100100080 ray spectrometer 2308100100081 (ERR-3) Error of extrapolation of the net capture 2308100100082 gamma-ray pulse height spectrum below the 2308100100083 discrimination level (0.6 MeV); 2308100100084 (ERR-4,1.,2.) Error due to corrections 1%-2%. 2308100100085 HISTORY (20090809C) S.M. 2308100100086 (20090915C) M.M./S.M. 2308100100087 ENDBIB 85 0 2308100100088 COMMON 3 3 2308100100089 MONIT-ERR ERR-2 ERR-3 2308100100090 PER-CENT PER-CENT PER-CENT 2308100100091 3. 1. 2. 2308100100092 ENDCOMMON 3 0 2308100100093 ENDSUBENT 92 0 2308100199999 SUBENT 23081002 20090809 22162308100200001 BIB 10 36 2308100200002 REACTION (46-PD-105(N,G)46-PD-106,,SIG,,AV) Averaged over energy2308100200003 interval 2308100200004 METHOD (SITA) Intermittent sample-monitor-blank irradiation: 2308100200005 total 64 Hr, 38 hr sample, 13 hr gold, 13 hr blank 2308100200006 DETECTOR (SCIN,GLASD) 6Li-glass scintillation detector with a 2308100200007 diameter of 5.0 mm thickness 5.0 mm mounted on a 2308100200008 12.7-mm diameter photomultiplier. The neutron detector2308100200009 was located 30 cm from the lithium target and at 2308100200010 2.38 degrees with respect to the proton beam's 2308100200011 direction - for neutron flux determination 2308100200012 INC-SOURCE .Proton pulse repetition rate was 2 MHz, and the 2308100200013 average proton beam current about 9. micro-A. 2308100200014 INC-SPECT .Continuous neutron spectrum in 2 - 95 keV range. 2308100200015 Proton energy is 1.903 MeV, 22 keV above 7Li(p,n)7Be 2308100200016 reaction threshold 2308100200017 REL-REF (A,10868010,R.L.Macklin+,J,NSE,71,182,1979) 2308100200018 for energies more than 35 keV 2308100200019 (A,21810002,E.Cornelis+,C,82ANTWER,,222,1982) For ener-2308100200020 gies more than 35 keV 2308100200021 (D,10868010,R.L.Macklin+,J,NSE,71,182,1979) 2308100200022 for energies less than 35 keV 2308100200023 (D,21810002,E.Cornelis+,C,82ANTWER,,222,1982) For ener-2308100200024 gies less than 35 keV 2308100200025 CORRECTION .Product of the partial correction coeffs are given 2308100200026 as MISC1, MISC2 in data section 2308100200027 MISC-COL (MISC1) Full correction coefficients for 105Pd equal 2308100200028 to product of neutron (Cn) and gamma-ray (Cg) 2308100200029 coefficients 2308100200030 (MISC2) Full correction coefficients for 197Au equal 2308100200031 to product of neutron (Cn) and gamma-ray (Cg) 2308100200032 coefficients 2308100200033 (MISC3) Total error in barns 2308100200034 ERR-ANALYS (ERR-T) Total error in percent 2308100200035 STATUS (TABLE) From Table 2 of NSTS,5,443,2008 and Table 3 of 2308100200036 KPS,50,1598,2007 2308100200037 (DEP,22932001) Error specification 2308100200038 ENDBIB 36 0 2308100200039 NOCOMMON 0 0 2308100200040 DATA 8 6 2308100200041 EN-MIN EN-MAX DATA ERR-T MISC3 MONIT 2308100200042 MISC1 MISC2 2308100200043 KEV KEV B PER-CENT B B 2308100200044 NO-DIM NO-DIM 2308100200045 15. 25. 1.558 4.02 0.063 0.717 2308100200046 1.0039 1.0142 2308100200047 25. 35. 1.313 4.02 0.053 0.567 2308100200048 1.0036 1.0177 2308100200049 35. 45. 1.167 4.02 0.047 0.494 2308100200050 1.0022 1.0166 2308100200051 45. 55. 1.025 4.03 0.041 0.439 2308100200052 1.0030 1.0179 2308100200053 55. 65. 0.906 4.04 0.037 0.399 2308100200054 1.0041 1.0189 2308100200055 65. 90. 0.818 4.04 0.033 0.356 2308100200056 1.0035 1.0144 2308100200057 ENDDATA 16 0 2308100200058 ENDSUBENT 57 0 2308100299999 SUBENT 23081003 20090915 22162308100300001 BIB 7 19 2308100300002 REACTION (46-PD-105(N,G)46-PD-106,,SIG,,SPA) 2308100300003 METHOD (SITA) Runs with and without sample, and with standard2308100300004 gold sample were made cyclically. Total measuring time2308100300005 was about 79 hours: 38.9 and 32 for the sample, gold 2308100300006 and open runs, respectively. 2308100300007 DETECTOR (GLASD) Li-6 glass scintillation detector for neutron 2308100300008 energy and flux monitoring. 102.0 mm diameter, 5 mm 2308100300009 thickness located at 4.6 m from neutron source, at 2308100300010 the angle 1.4 degrees with respect to proton beam 2308100300011 direction. 2308100300012 INC-SOURCE .Proton pulse repetition rate was 4 MHz, and the 2308100300013 average proton beam current 8.4 micro-A. 2308100300014 INC-SPECT .The incident neutron energy spectrum on the sample 2308100300015 was derived from the TOF spectra observed with the 2308100300016 Li-6 glass detector for the blank run. 2308100300017 REL-REF (A,10868008,R.L.Macklin+,J,NST,71,182,1979) In general,2308100300018 good agreement with Macklin+ and ENDF/B-VII,JEF-3.1, 2308100300019 JENDL-3.3. 2308100300020 STATUS (TABLE) Table 2 of NSTS,5,443. 2308100300021 ENDBIB 19 0 2308100300022 NOCOMMON 0 0 2308100300023 DATA 5 1 2308100300024 EN-MEAN EN-RSL-FW DATA ERR-T MONIT 2308100300025 KEV KEV B B B 2308100300026 550. 99. 0.232 0.009 0.123 2308100300027 ENDDATA 3 0 2308100300028 ENDSUBENT 27 0 2308100399999 SUBENT 23081004 20090915 22162308100400001 BIB 6 19 2308100400002 REACTION (46-PD-105(N,G)46-PD-106,,MLT/DE,,AV) Averaged over 2308100400003 neutron energy interval 2308100400004 METHOD (SITA) Runs with and without sample, and with standard2308100400005 gold sample were made cyclically. Total measuring time2308100400006 was about 79 hours: 38.9 and 32 for the sample, gold 2308100400007 and open runs, respectively. 2308100400008 DETECTOR (SCIN,GLASD) 6Li-glass scintillation detector with a 2308100400009 diameter of 5.0 mm thickness 5.0 mm mounted on a 2308100400010 12.7-mm diameter photomultiplier. The neutron detector2308100400011 was located 50 cm from the lithium target and at 2308100400012 40 degree with respect to the proton beam's direction 2308100400013 - for neutron flux determination 2308100400014 INC-SOURCE .Proton pulse repetition rate was 4 MHz, and the 2308100400015 average proton beam current 8.4 micro-A. 2308100400016 INC-SPECT .The incident neutron energy spectrum on the sample 2308100400017 was derived from the TOF spectra observed with the 2308100400018 Li-6 glass detector for the blank run. 2308100400019 STATUS (UNOBT) Data are given on Fig.3(a) of NSTS,5,443. 2308100400020 Request for data sent to gnkim@knu.ac.kr. 2308100400021 ENDBIB 19 0 2308100400022 COMMON 4 3 2308100400023 EN-MIN EN-MAX E-MIN E-MAX 2308100400024 KEV KEV MEV MEV 2308100400025 10. 100. 0.5 10. 2308100400026 ENDCOMMON 3 0 2308100400027 NODATA 0 0 2308100400028 ENDSUBENT 27 0 2308100499999 SUBENT 23081005 20090915 22162308100500001 BIB 6 17 2308100500002 REACTION (46-PD-105(N,G)46-PD-106,,MLT/DE,,SPA) 2308100500003 METHOD (SITA) Runs with and without sample, and with standard2308100500004 gold sample were made cyclically. Total measuring time2308100500005 was about 79 hours: 38.9 and 32 for the sample, gold 2308100500006 and open runs, respectively. 2308100500007 DETECTOR (GLASD) Li-6 glass scintillation detector for neutron 2308100500008 energy and flux monitoring. 102.0 mm diameter, 5 mm 2308100500009 thickness located at 4.6 m from neutron source, at 2308100500010 the angle 1.4 degrees with respect to proton beam 2308100500011 direction. 2308100500012 INC-SOURCE .Proton pulse repetition rate was 4 MHz, and the 2308100500013 average proton beam current 8.4 micro-A. 2308100500014 INC-SPECT .The incident neutron energy spectrum on the sample 2308100500015 was derived from the TOF spectra observed with the 2308100500016 Li-6 glass detector for the blank run. 2308100500017 STATUS (UNOBT) Data are given on Fig.3(b) of NSTS,5,443. 2308100500018 Request for data sent to gnkim@knu.ac.kr. 2308100500019 ENDBIB 17 0 2308100500020 COMMON 4 3 2308100500021 EN-MEAN EN-RSL E-MIN E-MAX 2308100500022 KEV KEV MEV MEV 2308100500023 550. 99. 0.5 9.5 2308100500024 ENDCOMMON 3 0 2308100500025 NODATA 0 0 2308100500026 ENDSUBENT 25 0 2308100599999 ENDENTRY 5 0 2308199999999