ENTRY 22894 20161120 22552289400000001 SUBENT 22894001 20161120 22552289400100001 BIB 19 87 2289400100002 TITLE Ni-62(n,gamma)Ni-63 reaction and overproduction 2289400100003 of Ni isotopes 2289400100004 AUTHOR (A.Tomyo,Y.Temma,M.Segawa,Y.Nagai,T.Shima,T.Ohsaki, 2289400100005 M.Igashira, H.Makii,T.Masaki,J.Nishiyama) 2289400100006 INSTITUTE (2JPNOSA) Nagai, Temma, Segawa, Shima, Makii, Tomyo. 2289400100007 (2JPNTIT) Igashira, Ohsaki and experimental site 2289400100008 REFERENCE (J,AJ,623,L153,200504) Main reference, data are given 2289400100009 (J,JPJ,74,(11),2981,200511) First author M.Segawa. 2289400100010 Graphs. 2289400100011 (J,NP/A,758,537,2005) Data for 30 keV only. 2289400100012 First author Y.Nagai. 2289400100013 (S,JAERI-C-2005-003,237,2005) First author Y.Temma . 2289400100014 MACS at kT=30 keV 37.0+-3.2 mb 2289400100015 REL-REF (N,,K.Senoo+,J,NIM/A,339,556,1994) TIME-MULTI code. 2289400100016 (R,,K.Shibata+,J,NST,39,1125,2002) JENDL-3.3 library 2289400100017 FACILITY (VDGT,2JPNTIT) The 3.2 MV Pelletron accelerator of the 2289400100018 Research Laboratory for Nuclear Reactors at the Tokyo 2289400100019 Institute of Technology. 2289400100020 INC-SOURCE (P-LI7) Pulsed proton beam with repetition rate 4 MHz, 2289400100021 pulse width 1.5 nanosec, proton current is 4(8) micro-A2289400100022 at repetition rate of 2(4) MHz. Li targets of thickness2289400100023 200 microg/cm**2 on copper backing, air-cooled or 2289400100024 water-cooled. 2289400100025 INC-SPECT Neutron energy spectrum measured by Li-6-glass 2289400100026 detector is given on Fig.1 of J,JPJ,74. Spectrum has a2289400100027 peak at around 30 keV. Neutron flux below 10 keV was 2289400100028 obtained by using gamma-ray yield of Au-197(n,gamma) 2289400100029 reaction is given on Fig.5 of J,JPJ,74 decreases 2289400100030 significantly with decreasing neutron energy. 2289400100031 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2289400100032 MONIT-REF (,P.G.Young,3,ENDF/B-VI,7925,1984) Au-197 c-s, 1984 . 2289400100033 ANALYSIS .Using JENDL-3.3 data for total, elastic and (n,gamma) 2289400100034 cross sections as a first approximation, subsequent 2289400100035 approximations for Ni-62(N,G)Ni-63 cross section were 2289400100036 calculated with the help of TIME-MULTI code, 2289400100037 see REL-REF of K.Senoo+. 2289400100038 (DECAY) Decay curve analysis for astrophysically 2289400100039 relevant energies using a discrete gamma-ray 2289400100040 detection method. 2289400100041 METHOD (TOF) 2289400100042 (GSPEC,PHD) 2289400100043 (SITA) Intermittent Ni-62, gold and blank sample 2289400100044 irradiations 2289400100045 (PHD) Gamma-ray yield from net gamma-ray pulse-height 2289400100046 spectrum measured by NaI(Tl) spectrometer was obtained2289400100047 by pulse-height weighting technique. 2289400100048 DETECTOR (GLASD) Li-6 glass detector 5 mm diam and 5 mm thick 2289400100049 for neutron energy calibration above 12 keV . 2289400100050 (NAICR) Anti-Compton NaI(Tl) spectrometer calibrated 2289400100051 by standard Co-60, Y-88 and by Fe-56(N,G)Fe-57 2289400100052 reaction - for gamma detection 2289400100053 SAMPLE .Nickel oxide sample enriched to 96.3% in Ni-62, 2289400100054 weight of 2.52 gram placed in a carbon case 20 mm 2289400100055 diameter, depth 4 mm, surface thickness 1 mm, bottom 2289400100056 thickness 1.4 mm. Impurities content is: Ni-58 - 0.4%,2289400100057 Ni-60 - 0.4%, Ni-61 - 1.8%, Ni-64 - 1.1%. 2289400100058 .A gold monitor sample with a diameter of 20-mm and 2289400100059 thickness of 1 mm was used for normalization of the 2289400100060 absolute capture cross section. 2289400100061 ADD-RES (COMP) Monte-Carlo calculation. 2289400100062 Prompt discrete gamma-rays feeding from a neutron 2289400100063 capture state of Ni-62 to low-lying excited states 2289400100064 were observed. 2289400100065 CORRECTION .Correction for multiple neutron scattering in carbon 2289400100066 case, nickel and gold samples, and for self-shielding 2289400100067 were accurately using Monte-Carlo code TIME-MULTI, 2289400100068 see REL-REF of Senoo+. 2289400100069 For background. 2289400100070 Correction for gamma-ray absorption by sample and 2289400100071 finite size of sample, estimated by Monte Carlo method 2289400100072 to be 1.01 . 2289400100073 ERR-ANALYS (DATA-ERR) The uncertainty is reported by authors. 2289400100074 Includes error listed below : 2289400100075 (ERR-S,2.,8.)Max error of the gamma-ray statistics 8.%.2289400100076 -Min error of the gamma-ray statistics 2.% . 2289400100077 (ERR-2) Error in the response function of Na-I(Tl) 2289400100078 spectrometer. 2289400100079 (ERR-3) Error due to the correction factor. 2289400100080 (MONIT-ERR) Error due to the gold monitor. 2289400100081 STATUS (APRVD) Y.Nagai, 2005-12-19 2289400100082 HISTORY (20051111C) SM 2289400100083 (20060205A) Last corrections have been done. 2289400100084 (20090902A) M.M. Reference J,JPJ,74 was added. 2289400100085 BIB information was added. Subent 005 was added. 2289400100086 (20130111U) SD: Ref. was corrected. Title corrected. 2289400100087 (20161120A) M.M. Ref. S,JAERI-C-2005-003,237,2005 was 2289400100088 added. 2289400100089 ENDBIB 87 0 2289400100090 COMMON 3 3 2289400100091 MONIT-ERR ERR-2 ERR-3 2289400100092 PER-CENT PER-CENT PER-CENT 2289400100093 3. 2. 3. 2289400100094 ENDCOMMON 3 0 2289400100095 ENDSUBENT 94 0 2289400199999 SUBENT 22894002 20090902 22172289400200001 BIB 5 8 2289400200002 REACTION (28-NI-62(N,G)28-NI-63,,SIG,,AV) Averaged over 2289400200003 energy interval given in data section. 2289400200004 ANALYSIS .Total capture cross section 2289400200005 MISC-COL (MISC) Correction factor for multiple scattering and 2289400200006 self-shielding . 2289400200007 STATUS (TABLE) Table 1 of J,AJ/L,623,153,2005 . 2289400200008 HISTORY (20090902A) MISC1 data were moved in Subent 005. 2289400200009 MISC2 -> MISC. 2289400200010 ENDBIB 8 0 2289400200011 NOCOMMON 0 0 2289400200012 DATA 5 8 2289400200013 EN-MIN EN-MAX DATA DATA-ERR MISC 2289400200014 KEV KEV MB MB NO-DIM 2289400200015 5.5 7. 309. 30. 1.85 2289400200016 7. 8.5 159. 17. 1.48 2289400200017 8.5 12. 111. 10. 1.28 2289400200018 12. 15. 44.1 4.2 1.76 2289400200019 15. 25. 20.7 1.7 1.13 2289400200020 25. 35. 24.3 1.4 1.12 2289400200021 35. 55. 16.8 0.9 1.14 2289400200022 55. 90. 7.4 0.5 1.04 2289400200023 ENDDATA 10 0 2289400200024 ENDSUBENT 23 0 2289400299999 SUBENT 22894003 20090902 22172289400300001 BIB 5 12 2289400300002 REACTION (28-NI-62(N,G)28-NI-63,,SIG,,MXW,DERIV) MACS 2289400300003 ANALYSIS .To obtain cross sections below 5.5 keV a s-wave 2289400300004 resonance of Ni-63 at 4.54 keV with its parameters 2289400300005 was taken from JENDL-3.3. For cross section above 2289400300006 90 keV data were taken from JENDL-3.3, both normalized2289400300007 to the present data. 2289400300008 REL-REF (D,,T.Rauscher+,J,PR/C,66,028802,2002) 2289400300009 (D,,T.Rauscher+,J,AJ,576,323,2002) 2289400300010 (R,,K.Shibata+,J,NST,39,1125,2002) 2289400300011 INC-SPECT .Maxwellian neutron energy distribution 2289400300012 STATUS (TABLE) Text of J,AJ/L,623,153,2005, page L156 . 2289400300013 (DEP,22894002) 2289400300014 ENDBIB 12 0 2289400300015 NOCOMMON 0 0 2289400300016 DATA 3 8 2289400300017 KT DATA DATA-ERR 2289400300018 KEV MB MB 2289400300019 5. 335. 33. 2289400300020 10. 152. 15. 2289400300021 20. 61.7 5.6 2289400300022 30. 37.0 3.2 2289400300023 40. 26.6 2.2 2289400300024 50. 21.2 1.7 2289400300025 60. 18.0 1.4 2289400300026 80. 14.4 1.1 2289400300027 ENDDATA 10 0 2289400300028 ENDSUBENT 27 0 2289400399999 SUBENT 22894004 20090902 22172289400400001 BIB 3 7 2289400400002 REACTION (28-NI-61(N,G)28-NI-62,,SIG) 2289400400003 ANALYSIS .Gamma-transition of the Ni-62 1.17 MeV and 10.6 MeV 2289400400004 were used to obtain cross section. 2289400400005 Large uncertainty due to low statistics of gamma-ray 2289400400006 yield. 2289400400007 STATUS (TABLE) Text of J,AJ/L,623,153,2005, page L156. 2289400400008 (PRELM) By the authors 2289400400009 ENDBIB 7 0 2289400400010 NOCOMMON 0 0 2289400400011 DATA 3 3 2289400400012 EN-MEAN DATA DATA-ERR 2289400400013 KEV MB MB 2289400400014 8. 370. 350. 2289400400015 16. 120. 65. 2289400400016 37. 37. 14. 2289400400017 ENDDATA 5 0 2289400400018 ENDSUBENT 17 0 2289400499999 SUBENT 22894005 20090902 22172289400500001 BIB 4 7 2289400500002 REACTION (28-NI-62(N,G)28-NI-63,PAR,SIG,,AV) Averaged over 2289400500003 energy interval given in data section . 2289400500004 Partial capture cross section corresponding to the 2289400500005 gamma-transition from capture state to ground state. 2289400500006 ANALYSIS Strong peak at 6.8 MeV is used. 2289400500007 STATUS (TABLE) Table 1 of J,AJ/L,623,153,2005 . 2289400500008 HISTORY (20090902C) M.M. MISC1 data were moved from Subent 002.2289400500009 ENDBIB 7 0 2289400500010 COMMON 1 3 2289400500011 E-LVL 2289400500012 MEV 2289400500013 0. 2289400500014 ENDCOMMON 3 0 2289400500015 DATA 4 8 2289400500016 EN-MIN EN-MAX DATA DATA-ERR 2289400500017 KEV KEV MB MB 2289400500018 5.5 7. 171. 18. 2289400500019 7. 8.5 54.3 7.2 2289400500020 8.5 12. 33.9 3.7 2289400500021 12. 15. 10.1 1.7 2289400500022 15. 25. 8.3 0.8 2289400500023 25. 35. 8.1 0.6 2289400500024 35. 55. 7.3 0.4 2289400500025 55. 90. 2.0 0.2 2289400500026 ENDDATA 10 0 2289400500027 ENDSUBENT 26 0 2289400599999 ENDENTRY 5 0 2289499999999