ENTRY 14238 20210913 14861423800000001 SUBENT 14238001 20210913 14861423800100001 BIB 15 52 1423800100002 TITLE Determination of the stellar (n,gamma) cross section 1423800100003 of 40Ca with accelerator mass spectrometry 1423800100004 AUTHOR (I.Dillmann,C.Domingo-Pardo,M.Heil,F.Kappeler, 1423800100005 A.Wallner,O.Forstner,R.Golser,W.Kutschera, A.Priller, 1423800100006 P.Steier,A.Mengoni,R.Gallino,M.Paul, C.Vockenhuber) 1423800100007 REFERENCE (J,PR/C,79,065805,2009) Original reference. 1423800100008 #doi:10.1103/PhysRevC.79.065805 1423800100009 (R,INDC(GER)-0053,2021) Revised values of Karlsruhe 1423800100010 cross sections. 1423800100011 INSTITUTE (2GERKFK,2AUSVIE,3ZZZIAE,2ITYTUR,3ISLHEB,1CANTMF) 1423800100012 FACILITY (VDG,2GERKFK) Karlsruhe 3.7 MV VdG accelerator 1423800100013 SAMPLE (20-CA-40,NAT=0.96941) A sample of calcium carbonate 1423800100014 (152.6 mg CaCO3) with natural isotopic abundance 1423800100015 96.941% of 40Ca was used in this measurement. The 1423800100016 sample material was pressed into a thin pellet 8 mm 1423800100017 in diameter, enclosed in 15 microm thick Al foil, and 1423800100018 sandwiched between two 30 microm thick Au foils of 1423800100019 the same diameter. 1423800100020 MONITOR (79-AU-197(N,G)79-AU-198,,SIG,,SPA) 1423800100021 DECAY-MON (79-AU-198-G,2.69517D,DG,411.8,0.9558) 1423800100022 MONIT-REF (,R.Reifarth+,J,EPJ/P,133,424,2018) Complete 1423800100023 description of Karlsruhe cross sections deficiencies. 1423800100024 INC-SOURCE (P-LI7) 1423800100025 METHOD (ACTIV) Monitor reaction was measured by activation. 1423800100026 (AMS) In addition to activation measurements, the 1423800100027 number of 41Ca nuclei produced in the neutron 1423800100028 activation was measured offline applying the 1423800100029 technique of accelerator mass spectrometry (AMS) at 1423800100030 the VERA (Vienna Environmental Research Accelerator) 1423800100031 facility. 1423800100032 CORRECTION Correction for neutron flux variation during activation1423800100033 was applied. 1423800100034 ERR-ANALYS (ERR-T) Total uncertainty 1423800100035 (ERR-1) Uncertainty in AMS method 1423800100036 (ERR-2) Total uncertainty in monitor activity 1423800100037 (ERR-3) Uncertainty in monitor cross-section 1423800100038 COMMENT Compiler's comment: The Karlsruhe group original 1423800100039 result was based on its own 197Au(n,gamma) cross 1423800100040 section by Ratynski and Kaeppeler, Phys.Rev. C37, 595 1423800100041 (1988), EXFOR entry #22099 for neutron beam monitor 1423800100042 that later was proven as deficient. 1423800100043 Kaeppeler and Reifarth comment: cross section value in 1423800100044 entry 14238 is renormalized 1423800100045 a) for new gold cross section 1423800100046 b) note that the quoted neutron energies refer to the 1423800100047 lab system; effective energies in the c.m. system have 1423800100048 to be reduced by 40/41 1423800100049 HISTORY (20090706C) Compiled by S.H. 1423800100050 (20131111U) On. INSTITUTE: 2AUSVER -> 2AUSVIE 1423800100051 (20210611A) BP: Added doi, COMMENT, updated REFERENCE, 1423800100052 replaced ERR-3, original cross sections 1423800100053 in Sub. 2-3 with the revised values. 1423800100054 ENDBIB 52 0 1423800100055 COMMON 6 3 1423800100056 EN-ERR ERR-1 ERR-2 ERR-3 KT-DUM-NRM MONIT 1423800100057 KEV PER-CENT PER-CENT PER-CENT KEV B 1423800100058 0.5 5.2 2.9 1.0 25.0 622.71423800100059 ENDCOMMON 3 0 1423800100060 ENDSUBENT 59 0 1423800199999 SUBENT 14238002 20220119 14861423800200001 BIB 4 5 1423800200002 REACTION (20-CA-40(N,G)20-CA-41,,SIG,,MXW) 1423800200003 METHOD Revised data: Measured quantity: cross section ratio 1423800200004 40Ca/197Au = 0.00985+-0.00058 1423800200005 CORRECTION Correction for revised gold standard 622.7/586 = 1.06261423800200006 STATUS (TABLE) Table 4 of J,PR/C,79,065805,2009. 1423800200007 ENDBIB 5 0 1423800200008 NOCOMMON 0 0 1423800200009 DATA 3 1 1423800200010 KT DATA ERR-T 1423800200011 KEV MB MB 1423800200012 30.0 5.73 0.34 1423800200013 ENDDATA 3 0 1423800200014 ENDSUBENT 13 0 1423800299999 SUBENT 14238003 20210913 14861423800300001 BIB 5 16 1423800300002 REACTION (20-CA-40(N,G)20-CA-41,,SIG,,MXW,DERIV) 1423800300003 ANALYSIS Maxwellian averaged cross sections were calculated 1423800300004 from experimental values measured at 30 keV using 1423800300005 energy dependency of evaluated cross sections. 1423800300006 Small correction for deviation from true Maxwellian 1423800300007 spectrum in experiment was applied. 1423800300008 CORRECTION Original data: Correction for true Maxwellian spectrum 1423800300009 applied 1423800300010 Revised data: Measured quantity: Correction for revised1423800300011 gold standard 622.7/586 = 1.0626 1423800300012 STATUS (DEP,14238002) 1423800300013 (TABLE) Revised cross sections: Text on page 20 of 1423800300014 R,INDC(GER)-0053,2021. 1423800300015 HISTORY (20210611A) BP: Updated original Karlsruhe cross 1423800300016 sections with the revised values, added 1423800300017 CORRECTION information. 1423800300018 ENDBIB 16 0 1423800300019 NOCOMMON 0 0 1423800300020 DATA 3 11 1423800300021 KT DATA ERR-T 1423800300022 KEV MB MB 1423800300023 5.0 11.96 0.75 1423800300024 10.0 11.49 0.72 1423800300025 15.0 9.23 0.58 1423800300026 20.0 7.56 0.40 1423800300027 25.0 6.46 0.41 1423800300028 30.0 5.73 0.36 1423800300029 40.0 4.93 0.31 1423800300030 50.0 4.53 0.28 1423800300031 60.0 4.28 0.27 1423800300032 80.0 3.91 0.25 1423800300033 100.0 3.59 0.23 1423800300034 ENDDATA 13 0 1423800300035 ENDSUBENT 34 0 1423800399999 ENDENTRY 3 0 1423899999999