ENTRY 22416 20211228 230722416 0 1 SUBENT 22416001 20211228 230722416 1 1 BIB 17 50 22416 1 2 TITLE Direct neutron capture of 48Ca at kT=52 keV 22416 1 3 AUTHOR (P.Mohr,H.Oberhummer,H.Beer,W.Rochow,V.Koelle, 22416 1 4 G.Staudt,P.V.Sedyshev,Yu.P.Popov) 22416 1 5 INSTITUTE (2AUSTHV) Mohr, Oberhummer 22416 1 6 (2GERKFK) Beer 22416 1 7 (2GERTUE) Rochow, Koelle, Staudt 22416 1 8 (4ZZZDUB) Sedyshev, Popov 22416 1 9 REFERENCE (J,PR/C,56,1154,1997) Main reference,data given 22416 1 10 REL-REF (M,22371001,H.Beer+,J,PR/C,54,2014,1996) Experim.det. 22416 1 11 (M,22306001,H.Beer+,J,NIM/A,337,492,1994) Experim.det. 22416 1 12 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 22416 1 13 DECAY-MON (79-AU-198-G,2.69D,DG,411.8,0.9550) 22416 1 14 FACILITY (VDG,2GERTUE) 3.0 MV Van de Graaff accelerator ROSENAU 22416 1 15 at the University Tuebingen 22416 1 16 INC-SOURCE (P-T) Titanium-tritium target with a total activity 22416 1 17 about 5 Ci, thickness of titanium layer is 150 keV 22416 1 18 INC-SPECT Quasi-Maxwellian neutron energy spectrum with 22416 1 19 kT=52 keV which is obtained by bombarding a thick 22416 1 20 tritium target with protons at the energy 22416 1 21 1091 keV - 72 keV above the T(p,n) theshold 1019 keV 22416 1 22 COMMENT Experimental setup used fast activation technique 22416 1 23 with fast transport of irradiated sample 22416 1 24 METHOD (ACTIV) 22416 1 25 DETECTOR (HPGE) Efficiency 98.6% 22416 1 26 SAMPLE Two samples of powder Ca-C-O3 enriched by 77.87% in 22416 1 27 48Ca with diameters 6 mm amd masses 48.83 and 49.06 mg22416 1 28 ach sandwiched between two thin gold foils(16 mg 22416 1 29 per foil), both samples and gold foils were put into 22416 1 30 a cylindrical polyethilene container with an inner 22416 1 31 diameter 6 mm 22416 1 32 ERR-ANALYS (ERR-T) Total error 22416 1 33 (ERR-S) Statistical error 22416 1 34 (ERR-1,,5.) Uncertainty in neutron energy variations 22416 1 35 due to tritium density changes in the target 22416 1 36 (ERR-2) Uncertainty in enrichment of 48Ca in the 22416 1 37 CaCO3 sample 22416 1 38 (ERR-3,1.,10.) Uncertainty in gamma-branching ratios 22416 1 39 (1% for the 3084.4 keV line, 10% for the 22416 1 40 4071.9 keV line) 22416 1 41 (ERR-4) Uncertainty in calculated efficiency of the 22416 1 42 HPGe detector 22416 1 43 (ERR-5) Uncertainty in monitoring of neutron flux 22416 1 44 using the 6Li glass monitor 22416 1 45 (ERR-6) Uncertainty in corrections of the divergence 22416 1 46 of the neutron beam 22416 1 47 (MONIT-ERR) Uncertainty in monitor cross section 22416 1 48 STATUS (TABLE) Text on p.1156 of Phys.Rev.,C56(1997)1154 22416 1 49 HISTORY (19991026C) + + Compiled by S.M. + + 22416 1 50 (20211228A) SD:Updated to new date formats,lower case. 22416 1 51 Corrections in all Subents. Author's name corrected. 22416 1 52 ENDBIB 50 0 22416 1 53 COMMON 5 3 22416 1 54 ERR-S ERR-2 ERR-4 ERR-5 ERR-6 22416 1 55 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 22416 1 56 1.5 2.4 3. 1. 2. 22416 1 57 ENDCOMMON 3 0 22416 1 58 ENDSUBENT 57 0 22416 199999 SUBENT 22416002 20211228 230722416 2 1 BIB 3 3 22416 2 2 REACTION (20-CA-48(N,G)20-CA-49,,SIG,,MXW) 22416 2 3 DECAY-DATA (20-CA-49,8.718MIN,DG,3084.4,0.921,DG,4071.9,0.007) 22416 2 4 HISTORY (20211228A) SD: MONIT/ERR added. 22416 2 5 ENDBIB 3 0 22416 2 6 NOCOMMON 0 0 22416 2 7 DATA 5 1 22416 2 8 EN-MEAN DATA ERR-T MONIT MONIT-ERR 22416 2 9 KEV MICRO-B MICRO-B MB MB 22416 2 10 78. 623. 47. 431. 15. 22416 2 11 ENDDATA 3 0 22416 2 12 ENDSUBENT 11 0 22416 299999 ENDENTRY 2 0 2241699999999