ENTRY 22271 20170130 22582227100000001 SUBENT 22271001 20170130 22582227100100001 BIB 13 48 2227100100002 TITLE Measurement of the neutron capture rate of the 2227100100003 12C(n,g)13C reaction at stellar energy 2227100100004 AUTHOR (Y.Nagai, M.Igashira K.Takeda, N.Mukai, S.Motoyama, 2227100100005 F.Uesawa, H.Kitazawa, T.Fukuda) 2227100100006 INSTITUTE (2JPNTIT,2JPNTOK) 2227100100007 REFERENCE (J,AJ,372,683,1991) 2227100100008 (J,NIM/B,56-57,492,1991) Same cross sections in text 2227100100009 FACILITY (VDG,2JPNTIT) 3.2 MV Pelletron 2227100100010 INC-SOURCE (P-LI7) Protons (Ep=1.898 MeV, ~9 uA at a repetition 2227100100011 rate of 2 MHz, pulse width of 1.5 ns) on natLi 2227100100012 metallic layers evaporated on to a Cu disk 2227100100013 INC-SPECT Most probable energy of 30 keV. Thermal neutron 2227100100014 captures were discriminated by time-of-flight. 2227100100015 SAMPLE Natural reactor grade carbon disk (5.4 cm in diam., 2227100100016 1.5 cm in thick) 2227100100017 Standard Au sample (5.5 cm in diam., 0.17 cm in thick).2227100100018 The samples were placed on the beam axis at a distance 2227100100019 of 8.6 cm away from the neutron production target. 2227100100020 C, Au and blank runs were done cyclically. 2227100100021 METHOD (TOF,PHD,PHWT) 2227100100022 DETECTOR (NAICR) 7.6 cm (diam.) and 15.2 cm thick NaI(Tl) 2227100100023 detector surrounded by 25.4 cm (diam.) and 28.0 cm 2227100100024 thick annular NaI(Tl) detector. Set at 125 deg with 2227100100025 respect to the proton beam direction and 80 cm away 2227100100026 from the capture sample. 2227100100027 (GLASD) 4.5 x 4.5 x 0.1 cm3 6Li glass time-of-flight 2227100100028 detector. Set at 14 deg with respect to the proton 2227100100029 beam. 2227100100030 CORRECTION Corrected for 2227100100031 - gamma-ray absorption in the sample 2227100100032 - sample position dependence of gamma-ray detection 2227100100033 efficiency 2227100100034 - Neutron self-shielding and multiple scattering 2227100100035 STATUS (TABLE) Table 1 of Astrophys.J.372(1991)683 2227100100036 HISTORY (19931226C) N.O. 2227100100037 (19950420E) 2227100100038 (19961022A) * * Corrected by S. Maev 2227100100039 this ENTRY combined with 22272 reference moved in 2227100100040 proper Subents 2227100100041 Facility and Monitor code corrected in SAN 001 * * 2227100100042 (20080622A) References moved to SAN 001 2227100100043 Last corrections have been done - SM 2227100100044 (20121209A) SD: Vol.of ref. NIM/B was corrected: 2227100100045 (56/57 -> 56-57). Title of E-LVL-FIN in Subent 006 2227100100046 was changed. 2227100100047 (20161027A) M.M. Ref. J,AJ,372,683,1991 was added. 2227100100048 BIB information was updated. 2227100100049 (20170130A) On. 7Li(n,g) data sets returned to 22272. 2227100100050 ENDBIB 48 0 2227100100051 NOCOMMON 0 0 2227100100052 ENDSUBENT 51 0 2227100199999 NOSUBENT 22271002 20170130 22582227100200001 NOSUBENT 22271003 20170130 22582227100300001 NOSUBENT 22271004 20170130 22582227100400001 SUBENT 22271005 20170130 22582227100500001 BIB 5 10 2227100500002 REACTION (6-C-12(N,G)6-C-13,,SPC,,SPA/REL) 2227100500003 REL-REF (R,,F.Ajzenberg-Selove,J,NP/A,449,1,1986) 2227100500004 gamma-ray branching ratio of 13C*(2nd,3rd exc.states) 2227100500005 FLAG (0.) capture state -> ground state 2227100500006 (1.) capture state -> 1st excited state 2227100500007 (2.) capture state -> 2nd excited state 2227100500008 (3.) capture state -> 3rd excited state 2227100500009 ERR-ANALYS (DATA-ERR) No information on source of uncertainty 2227100500010 HISTORY (20080622U) Reference moved to SAN 001 2227100500011 (20170130A) On. Data table revised. 2227100500012 ENDBIB 10 0 2227100500013 COMMON 1 3 2227100500014 EN-MEAN 2227100500015 KEV 2227100500016 30. 2227100500017 ENDCOMMON 3 0 2227100500018 DATA 4 4 2227100500019 E DATA DATA-ERR FLAG 2227100500020 MEV ARB-UNITS ARB-UNITS NO-DIM 2227100500021 4.98 1.51 0.41 0. 2227100500022 1.89 4.42 0.45 1. 2227100500023 1.29 0.79 0.39 2. 2227100500024 1.12 1.00 0.50 3. 2227100500025 ENDDATA 6 0 2227100500026 ENDSUBENT 25 0 2227100599999 SUBENT 22271006 20170130 22582227100600001 BIB 7 11 2227100600002 REACTION (6-C-12(N,G)6-C-13,PAR,SIG,,SPA) 2227100600003 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2227100600004 MONIT-REF (,S.Mughabghab,3,ENDF/B-V,1379,1979) 2227100600005 FLAG (1.) These values are swapped in Table 1 of 2227100600006 Nucl.Instrum.Meth.B56/57(1991)492 due to a mistake 2227100600007 (Yasuki Nagai, 2017-01-30) 2227100600008 ERR-ANALYS (DATA-ERR) No information on source of uncertainty 2227100600009 STATUS (DEP,22271005) gamma-ray intensities 2227100600010 HISTORY (20080622U) Reference moved to SAN 001 2227100600011 (20121209A) SD: Title of E-LVL-FIN -> E-LVL. 2227100600012 (20170130A) On. (n,g2) and (n,g3) values swapped. 2227100600013 ENDBIB 11 0 2227100600014 COMMON 1 3 2227100600015 EN-MEAN 2227100600016 KEV 2227100600017 30. 2227100600018 ENDCOMMON 3 0 2227100600019 DATA 4 4 2227100600020 E-LVL DATA DATA-ERR FLAG 2227100600021 MEV MICRO-B MICRO-B NO-DIM 2227100600022 0. 3.3 0.9 2227100600023 3.09 9.6 1.3 2227100600024 3.68 1.7 0.8 1. 2227100600025 3.85 2.2 1.1 1. 2227100600026 ENDDATA 6 0 2227100600027 ENDSUBENT 26 0 2227100699999 SUBENT 22271007 20170130 22582227100700001 BIB 4 10 2227100700002 REACTION (6-C-12(N,G)6-C-13,,SIG,,SPA) 2227100700003 STATUS (DEP,22271006) Partial cross sections 2227100700004 ERR-ANALYS (ERR-T) Total uncertainty propagated from 2227100700005 - statistical error of prompt gamma rays (10-33%), 2227100700006 - detector efficiency, (3-5%), 2227100700007 (ERR-1) pulse-heigh weighting technique (5%), 2227100700008 (ERR-2) neutron flux normalization (5%), 2227100700009 (MONIT-ERR) Au standard cross section (5%) 2227100700010 HISTORY (20080622U) Reference moved to SAN 001 2227100700011 (20170130A) On. REACTION(SF8): SPA added. 2227100700012 ENDBIB 10 0 2227100700013 NOCOMMON 0 0 2227100700014 DATA 6 1 2227100700015 EN-MEAN DATA ERR-T ERR-1 ERR-2 MONIT-ERR 2227100700016 KEV MICRO-B MICRO-B PER-CENT PER-CENT PER-CENT 2227100700017 30. 16.8 2.1 5. 5. 5. 2227100700018 ENDDATA 3 0 2227100700019 ENDSUBENT 18 0 2227100799999 ENDENTRY 7 0 2227199999999