ENTRY 22371 20151215 22462237100000001 SUBENT 22371001 20151215 22462237100100001 BIB 6 28 2237100100002 TITLE Measurement of neutron capture on Ca-48 at thermal 2237100100003 and thermonuclear energies 2237100100004 AUTHOR (H.Beer,C.Coceva,P.V.Sedyshev,Yu.P.Popov,H.Herndl, 2237100100005 R.Hofinger,P.Mohr,H.Oberhummer) 2237100100006 INSTITUTE (2GERKFK) H.Beer 2237100100007 (2ITYBOL) C.Coceva. Ente per Le Nuove Technologie, 2237100100008 l'Energia e l'Ambiente, Via Don Fiammelli 2, 2237100100009 I-40128 Bologna, Italy 2237100100010 (4ZZZDUB) P.Sedyshev, Yu.Popov 2237100100011 (2AUSTHV) H.Herndl, R.Hofinger, P.Mohr, H.Oberhummer. 2237100100012 Institut fuer Kernphysik, Wiedler Hauptstrasse, 8-10, 2237100100013 TU Wien, A-1040 Vienna, Austria 2237100100014 REFERENCE (J,PR/C,54,(4),2014,199610) Main ref., Data are given 2237100100015 REL-REF (M,,G.Chilosi+,J,NP/A,136,649,1969) Emission 2237100100016 probabilities 2237100100017 (M,22445001,H.Beer+,J,PR/C,52,3442,1995) The technique2237100100018 of fast cyclic activation has been described in details2237100100019 (M,22306001,H.Beer+,J,NIM/A,337,492,1994) The technique2237100100020 of fast cyclic activation has been described in details2237100100021 (I,,H.Beer+,J,AJ,387,258,1992) experimental details 2237100100022 of detector 2237100100023 HISTORY (19980127C) + + SM + + 2237100100024 (19990604A) date is corrected 2237100100025 (20060330U) Institute code corrected - MM 2237100100026 (20121217A) SD: Updated to lower case. Corrected 2237100100027 according last EXFOR rules and Dict. Col.En renamed; 2237100100028 Value for En was corrected in Subent 004. 2237100100029 (20151215A) SD: DECAY-DATA corrected in Subent 003. 2237100100030 ENDBIB 28 0 2237100100031 NOCOMMON 0 0 2237100100032 ENDSUBENT 31 0 2237100199999 SUBENT 22371002 20121217 22342237100200001 BIB 12 34 2237100200002 REACTION (20-CA-48(N,G)20-CA-49,,SIG,,MXW) 2237100200003 FACILITY (REAC,2BLGMOL) Studiencentrum vor Kernenergie, Mol 2237100200004 MONITOR (17-CL-35(N,G)17-CL-36,,SIG) 2237100200005 In the calibration run, CaCO3 was replaced by a 2237100200006 61.835 mg sample of carbon hexachloride (C2Cl6) in a 2237100200007 similar teflon container 2237100200008 MONIT-REF (,S.F.Mughabghab+,B,NEUT.CS 1A,,1981) 2237100200009 DETECTOR (NAICR) Coaxial Na-I(Tl) detector, 30cm x 30cm NaI(Tl) 2237100200010 (GE-IN) three germanium detectors, 130 cm3 coaxial Ge 2237100200011 crystal completely surrounded by NaI(Tl) scintillator,2237100200012 by a planar Ge crystal on the front side, and by 2237100200013 a coaxial Ge crystal on the rear. 2237100200014 DECAY-DATA (20-CA-49,,G,5146.5,0.74, 2237100200015 G,3123.5,0.23, 2237100200016 G,2023.2,0.23) 2237100200017 (20-CA-49,8.716MIN,DG,3084.4,0.921, 2237100200018 DG,4071.9,0.070) 2237100200019 INC-SOURCE (REAC) 2237100200020 INC-SPECT .Thermal neutrons, 5.E+5 n/cm2*sec intensity on sample 2237100200021 SAMPLE (20-CA-48,ENR=0.7787).Calcium carbonate Ca-C-O3, weight2237100200022 108.630 milligram, in cylindrical teflon container 2237100200023 with 0.6 cm inner diameter. 2237100200024 Ca-48 content is 77.87+-1.90%, 2237100200025 Ca-40 content is 20.42%, Ca-42 content is 0.24%, 2237100200026 Ca-43 content is 0.060%, Ca-44 content is 1.48%, 2237100200027 Ca-46 content is 0.01% 2237100200028 .carbon hexachloride C2-Cl6 in teflon container, 2237100200029 weight 61.835 milligram 2237100200030 ERR-ANALYS (ERR-SYS) The quoted error is comprehensive of a 2237100200031 systematic uncertainty of 2.4% in the enrichment of 2237100200032 the 48Ca sample 2237100200033 (ERR-1) error of Ca-48 enrichment 2237100200034 STATUS (TABLE) Text(p2016) of Phys.Rev.C54(1996)2014 2237100200035 HISTORY (20121217A) SD: DECAY-DATA corrected; ERR-T -> ERR-S 2237100200036 ENDBIB 34 0 2237100200037 COMMON 1 3 2237100200038 ERR-1 2237100200039 PER-CENT 2237100200040 2.4 2237100200041 ENDCOMMON 3 0 2237100200042 DATA 5 1 2237100200043 EN-DUMMY DATA ERR-SYS MONIT MONIT-ERR 2237100200044 EV MB MB B B 2237100200045 2.53E-02 982. 46. 43.6 0.4 2237100200046 ENDDATA 3 0 2237100200047 ENDSUBENT 46 0 2237100299999 SUBENT 22371003 20151215 22462237100300001 BIB 13 49 2237100300002 REACTION (20-CA-48(N,G)20-CA-49,,SIG) 2237100300003 FACILITY (VDG,2GERKFK) Karlsruhe 3.75 MV Van de Graaff 2237100300004 accelerator 2237100300005 DETECTOR (HPGE) Resolution 2 keV at 1.332 MeV gamma energy 2237100300006 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2237100300007 DECAY-DATA (20-CA-49,8.716MIN,DG,3084.4,0.921) 2237100300008 DECAY-MON (79-AU-198-G,2.69D,DG,411.8,0.9550) 2237100300009 INC-SOURCE (P-LI7) Thin lithium target, thickness 2.5E-4 cm 2237100300010 INC-SPECT .Linear neutron spectrum 2237100300011 SAMPLE (20-CA-48,ENR=0.7787) .Calcium carbonate Ca-C-O3, 2237100300012 weights from 7.017 to 70.58 milligram 6 mm in diam. 2237100300013 sandwiched between thin gold plates of the same 2237100300014 dimension in the front and back sides of sample with 2237100300015 masses from 15.19 to 16.78 milligram 2237100300016 Ca-48 content is 77.87+-1.90%, 2237100300017 Ca-40 content is 20.42%, Ca-42 content is 0.24%, 2237100300018 Ca-43 content is 0.060%, Ca-44 content is 1.48%, 2237100300019 Ca-46 content is 0.01% 2237100300020 Metallic gold foil 2237100300021 ANALYSIS Cross-sections were obtained by averaging of several 2237100300022 sets of measurements with different sample weights 2237100300023 given below 2237100300024 En+-En-ERR mass of Au mass of Sigma ERR-S ERR-T 2237100300025 front side Ca-C-O3 2237100300026 keV milligram milligram micro-B % % 2237100300027 151+-15 15.657 49.914 331 2.1 12 2237100300028 176+-20 15.553 70.58 303 1.5 11 2237100300029 176+-20 15.186 67.22 310 2.0 11 2237100300030 218+-23 16.740 58.150 318 2.1 10 2237100300031 218+-23 15.482 68.790 294 1.3 10 2237100300032 ERR-ANALYS (ERR-SYS) The following systematic uncertainties were 2237100300033 combined by quadratic error propagation; 2237100300034 (MONIT-ERR,1.5,3.) Uncertainty of Au standard cross 2237100300035 section, 1.5-3%; 2237100300036 (ERR-1) Uncertainty of Ge detector efficiency, 8%; 2237100300037 (ERR-2) Uncertainty of gamma-ray intensity per 2237100300038 49Ca decay; 2237100300039 (ERR-3) Uncertainty of gamma-ray intensity per 2237100300040 198Au decay; 2237100300041 (ERR-4,2.,7.) Uncertainty of divergence of 2237100300042 neutron beam, 2-7%; 2237100300043 (ERR-5) Uncertainty of factor fb , 1.5%; 2237100300044 (ERR-6,,0.5) Uncertainty of sample weight, < 0.5%; 2237100300045 (ERR-7) other systematic errors, 3%. 2237100300046 STATUS (TABLE) Table III of Phys.Rev.C54(1996)2014 2237100300047 HISTORY (20121217A) SD: EN-ERR -> EN-RSL; EN -> EN-MEAN; 2237100300048 ERR-T -> ERR-SYS. 2237100300049 (20151215A) SD: HL=8.716sec -> 8.716min in DECAY-DATA 2237100300050 following presentation in the Phys.Rev.C54(1996)2014. 2237100300051 ENDBIB 49 0 2237100300052 COMMON 5 3 2237100300053 ERR-1 ERR-2 ERR-3 ERR-5 ERR-7 2237100300054 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2237100300055 8. 1.1 0.1 1.5 3. 2237100300056 ENDCOMMON 3 0 2237100300057 DATA 4 3 2237100300058 EN-MEAN EN-RSL DATA ERR-SYS 2237100300059 KEV KEV B B 2237100300060 151. 15. 3.3100E-04 4.000E-05 2237100300061 176. 20. 3.0600E-04 3.100E-05 2237100300062 218. 23. 3.0400E-04 3.100E-05 2237100300063 ENDDATA 5 0 2237100300064 ENDSUBENT 63 0 2237100399999 SUBENT 22371004 20121217 22342237100400001 BIB 14 53 2237100400002 REACTION (20-CA-48(N,G)20-CA-49,,SIG,,MXW) 2237100400003 FACILITY (VDG,2GERKFK) Karlsruhe 3.75 MV Van de Graaff 2237100400004 accelerator 2237100400005 DETECTOR (HPGE) Resolution 2 keV at 1.332 MeV gamma energy 2237100400006 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2237100400007 MONIT-REF (22099002,W.Ratynski+,J,PR/C,37,595,1988) 2237100400008 (,R.L.Macklin,W,MACKLIN,1982) 2237100400009 DECAY-MON (79-AU-198-G,2.69D,G,411.8,0.9550) 2237100400010 DECAY-DATA (20-CA-49,523.0SEC,B-) 2237100400011 (21-SC-49,,DG,3084.4,0.921) 2237100400012 INC-SOURCE (P-LI7) Thick lithium target 2237100400013 INC-SPECT .Proton energy is near reaction Li-7(p,n)Be-7 thres- 2237100400014 hold producing neutron spectrum near to Maxwellian 2237100400015 with temperature 25 keV 2237100400016 SAMPLE .Calcium carbonate Ca-C-O3, weights from 7.017 to 2237100400017 70.58 milligram 6 mm in diameter sandwiched between 2237100400018 thin gold plates of the same dimension in the front 2237100400019 and back sides of sample with masses from 15.19 to 2237100400020 16.78 milligram 2237100400021 Ca-48 content is 77.87+-1.90%, 2237100400022 Ca-40 content is 20.42%, Ca-42 content is 0.24%, 2237100400023 Ca-43 content is 0.060%, Ca-44 content is 1.48%, 2237100400024 Ca-46 content is 0.01% 2237100400025 .metallic gold foil 2237100400026 COMMENT .Cross-sections were obtained by averaging of several 2237100400027 sets of measurements with different sample weights 2237100400028 given below 2237100400029 kT mass of Au mass of Sigma ERR-S ERR-T 2237100400030 front side Ca-C-O3 2237100400031 keV milligram milligram micro-b % % 2237100400032 25 15.577 18.28 721 1.4 10 2237100400033 25 15.745 10.064 719 0.9 10 2237100400034 25 15.390 21.353 767 1.4 9 2237100400035 25 16.010 8.6025 817 1.5 10 2237100400036 25 16.08 11.243 781 3.8 10 2237100400037 25 15.915 7.017 733 3.4 10 2237100400038 ERR-ANALYS (ERR-SYS) The following systematic uncertainties were 2237100400039 combined by quadratic error propagation; 2237100400040 (MONIT-ERR,1.5,3.) Uncertainty of Au standard cross 2237100400041 section, 1.5-3%; 2237100400042 (ERR-1) Uncertainty of Ge detector efficiency, 8%; 2237100400043 (ERR-2) Uncertainty of gamma-ray intensity per 2237100400044 49Ca decay; 2237100400045 (ERR-3) Uncertainty of gamma-ray intensity per 2237100400046 198Au decay; 2237100400047 (ERR-4,2.,7.) Uncertainty of divergence of 2237100400048 neutron beam, 2-7%; 2237100400049 (ERR-5) Uncertainty of factor fb , 1.5%; 2237100400050 (ERR-6,,0.5) Uncertainty of sample weight, < 0.5%; 2237100400051 (ERR-7) other systematic errors, 3%. 2237100400052 STATUS (TABLE) Table III of Phys.Rev.C54(1996)2014 2237100400053 HISTORY (20121217A) SD: EN-MEAN -> KT, value was corrected. 2237100400054 ERR-T -> ERR-SYS. 2237100400055 ENDBIB 53 0 2237100400056 COMMON 5 3 2237100400057 ERR-1 ERR-2 ERR-3 ERR-5 ERR-7 2237100400058 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2237100400059 8. 1.1 0.1 1.5 3. 2237100400060 ENDCOMMON 3 0 2237100400061 DATA 3 1 2237100400062 KT DATA ERR-T 2237100400063 KEV B B 2237100400064 25. 7.5100E-04 6.8000E-05 2237100400065 ENDDATA 3 0 2237100400066 ENDSUBENT 65 0 2237100499999 ENDENTRY 4 0 2237199999999