ENTRY 22971 20211025 23052297100000001
SUBENT 22971001 20211025 23052297100100001
BIB 11 56 2297100100002
TITLE Measurement of (n,gamma) reaction cross sections 2297100100003
at stellar energies for 58Ni and 78Se 2297100100004
AUTHOR (G.Rugel, I.Dillmann, T.Faestermann, M.Heil, 2297100100005
F.Kaeppeler, K.Knie, G.Korschinek, W.Kutschera, 2297100100006
M.Poutivtsev, A.Wallner, 2297100100007
P.Ludwig, L.Fimiani, K.Hain) 2297100100008
REFERENCE (J,NIM/B,259,683,2007) 2297100100009
#doi:10.1016/j.nimb.2007.01.206 2297100100010
(R,INDC(GER)-0053,2021) Revised values of Karlsruhe 2297100100011
cross sections. 2297100100012
Preliminary results for Ni-58 and Se-78 2297100100013
(J,PR/C,95,035803,2017) Final data for Ni-58 2297100100014
#doi:10.1103/PhysRevC.95.035803 2297100100015
First author P.Ludwig. Title: 'Measurement of the 2297100100016
stellar 58Ni(n,gamma)59Ni cross section with 2297100100017
accelerator mass spectrometry' 2297100100018
INSTITUTE (2GERMUN) Fakultaet fuer Physik, Technische Universi- 2297100100019
taet Muenchen, 85747 Garching, Germany. G.Rugel (Cor-2297100100020
responding author, Email address:grugel@ph.tum.de), 2297100100021
T.Faestermann, K.Knie, G.Korschinek, M.Poutivtsev, 2297100100022
A. Wallner, P.Ludwig, L.Fimiani, K.Hain 2297100100023
(2GERKFK) Institut fuer Kernphysik, Forschungszentrum 2297100100024
Karlsruhe, Germany. I.Dillmann, M.Heil,F.Kaeppeler 2297100100025
(2SWTBAS) Department fuer Physik und Astronomie, 2297100100026
Universitaet Basel, Switzerland. I.Dillmann 2297100100027
(2AUSIRK) Vienna Environmental Research Accelerator 2297100100028
(VERA), Institut fuer Isotopenforschung und Kernphys. 2297100100029
A-1090 Wien, Austria. W. Kutschera, A. Wallner 2297100100030
FACILITY (VDG,2GERKFK) 3.7 MV Van de Graaff accelerator, 2297100100031
average beam current 100 uA, proton energy 2297100100032
1912 keV, 30 keV above reaction Li-7(p,n)Be-7 2297100100033
INC-SOURCE (P-LI7) Protons bombarding um thick metallic 2297100100034
lithium layer on copper water-cooled backing 2297100100035
INC-SPECT Quasi-stellar near-Maxwellian distribution with kT = 2297100100036
25+-0.5 keV and maximal neutron energy 106 keV. 2297100100037
METHOD (ACTIV) Auxiliary activation method for neutron flux 2297100100038
determination with the help of Au-197(n,gamma) 2297100100039
(AMS) Accelerator mass spectrometry performed on the 2297100100040
AMS system at the Munich MUN Institute 2297100100041
(TOF) For accelerator mass separation 2297100100042
Samples were sandwiched between 10-30 um thick gold 2297100100043
foils in close geometry to Li-7 target 2297100100044
MONITOR (79-AU-197(N,G)79-AU-198,,SIG,,SPA) 2297100100045
REL-REF (R,,Z.Chunmei,J,NDS,95,59,2002) Decay constants for 2297100100046
monitor Au-197 2297100100047
(M,22959001,H.Nassar+,J,PRL,94,092504,2005) Details of 2297100100048
experiment and AMS method analysis 2297100100049
HISTORY (20071014C) SM 2297100100050
(20120120A) NDS(VZ): REL-REF: ND/B->NDS 2297100100051
(20170404A) M.M. Ref. PR/C,95,035803,2017 was added. 2297100100052
Subents 004-005 were added 2297100100053
(20190320U) SD: Second title moved under second ref. 2297100100054
in Subent 001. Pointers used in TITLE and REF. deleted2297100100055
(20200120U) SD: SAMPLE corrected in Subent 002. 2297100100056
(20211025A) SD: Corrections in several Subents. 2297100100057
Subent 006 added. 2297100100058
ENDBIB 56 0 2297100100059
NOCOMMON 0 0 2297100100060
ENDSUBENT 59 0 2297100199999
SUBENT 22971002 20200120 22852297100200001
BIB 9 24 2297100200002
REACTION (28-NI-58(N,G)28-NI-59,,SIG,,SPA) 2297100200003
SAMPLE Natural metallic Nickel sample, Ni-58 content is 2297100200004
68.077%. Mass 47.3 milligram, Ni-58 number 3.30E+20 2297100200005
(28-NI-58,NAT=0.68077) 2297100200006
MONIT-REF (,W.Ratynski+,J,PR/C,37,595,1988) 2297100200007
DECAY-MON (79-AU-198-G,2.69517D,DG,412.,0.9558) 2297100200008
ASSUMED (ASSUM1,28-NI-58(N,G)28-NI-59,,SIG) For thermal 2297100200009
neutrons 2297100200010
(ASSUM2,28-NI-64(N,G)28-NI-65,,SIG) For thermal 2297100200011
neutrons 2297100200012
REL-REF (R,13947002,S.Raman+,J,PR/C,70,044318,2004) 2297100200013
Ni-58 (n,gamma) thermal cross sections 2297100200014
(R,20625016,E.M.Gryntakis+,J,JRC,46,159,1978) 2297100200015
Ni-64 (n,gamma) thermal cross sections 2297100200016
(D,V0102085,Z.Y.Bao+,J,AND,76,70,2000) 2297100200017
ERR-ANALYS (ERR-T) Includes statistical, standard and 2297100200018
systematical uncertainties. 2297100200019
(ERR-1) Time-integrated neutron flux error 2297100200020
STATUS (PRELM) By the authors 2297100200021
(TABLE) Table 2 of Nucl.Instrum.Meth.,B259(2007)683 2297100200022
(SPSDD,22971004) Superseded by newer data. 2297100200023
HISTORY (20170404A) M.M. ERR-ANALYS, SPSDD were added. 2297100200024
MXW -> SPA . REL-REF of E.M.Gryntakis+ was added. 2297100200025
(20200120U) SD: SAMPLE corrected. 2297100200026
ENDBIB 24 0 2297100200027
COMMON 3 3 2297100200028
KT KT-ERR ERR-1 2297100200029
KEV KEV PER-CENT 2297100200030
25. 0.5 3. 2297100200031
ENDCOMMON 3 0 2297100200032
DATA 6 1 2297100200033
DATA ERR-T ASSUM1 ASSUM1-ERR ASSUM2 ASSUM2-ERR 2297100200034
MB MB MB MB MB MB 2297100200035
27.2 2.1 4.13 0.05 1.52 0.03 2297100200036
ENDDATA 3 0 2297100200037
ENDSUBENT 36 0 2297100299999
SUBENT 22971003 20211025 23052297100300001
BIB 9 22 2297100300002
REACTION (34-SE-78(N,G)34-SE-79,,SIG,,SPA) 2297100300003
SAMPLE Cd-Se compound, mass 216.8 milligram, Se-78 1.62E+20 2297100300004
Se-78 content 23.77%, Se-74 content 0.87%, 2297100300005
Se-80 - 46.9% 2297100300006
Second sample was enriched to 98.8% in Se-78 and 2297100300007
depleted to 0.01% in Se-74 - used at AMS 2297100300008
MONIT-REF (22099002,W.Ratynski+,J,PR/C,37,595,1988) 2297100300009
DECAY-MON (79-AU-198-G,2.69517D,DG,412.,0.9558) 2297100300010
ASSUMED (ASSUM,34-SE-78(N,G)34-SE-79,,SIG) For thermal neutrons2297100300011
REL-REF (R,,S.F.Mughabghab+,B,NEUT.CS 1A,,,1981) Se-78(n,gamma)2297100300012
cross section for thermal neutrons 2297100300013
(D,,Z.Y.Bao+,J,AND,76,70,2000) 2297100300014
ERR-ANALYS (DATA-ERR) Not specified 2297100300015
(ERR-1) Time-integrated neutron flux error 2297100300016
(MONIT-ERR) Uncertainty in monitor reaction 2297100300017
STATUS (TABLE) Table 2 of Nucl.Instrum.Meth.,B259(2007)683 2297100300018
(SPSDD,22971006) Renormalized. 2297100300019
HISTORY (20170404A) M.M.Correction of free text and ERR-ANALYS.2297100300020
ASSUM value corrected as given on page 686. 2297100300021
MXW -> SPA. 2297100300022
(20211025A) SD: KT -> KT-DUMMY. MONIT/ERR added. 2297100300023
Subent superseded. 2297100300024
ENDBIB 22 0 2297100300025
COMMON 5 3 2297100300026
KT-DUMMY KT-ERR ERR-1 MONIT MONIT-ERR 2297100300027
KEV KEV PER-CENT MB MB 2297100300028
25. 0.5 3. 586. 8. 2297100300029
ENDCOMMON 3 0 2297100300030
DATA 4 1 2297100300031
DATA DATA-ERR ASSUM ASSUM-ERR 2297100300032
MB MB MB MB 2297100300033
61. 10. 0.43 0.02 2297100300034
ENDDATA 3 0 2297100300035
ENDSUBENT 34 0 2297100399999
SUBENT 22971004 20211025 23052297100400001
BIB 8 33 2297100400002
REACTION (28-NI-58(N,G)28-NI-59,,SIG,,SPA) 2297100400003
SAMPLE Natural nickel metallic powder three samples. 2297100400004
Two samples were irradiated ~ 6 days at first run 2297100400005
3rd sample irradiated ~5 days three years later. 2297100400006
Sample N(Ni58) Diameter Flux-total 2297100400007
10**20atoms mm 10**14 n 2297100400008
Ni-1 1.652 8 8.73 2297100400009
Ni-2 1.649 8 8.50 2297100400010
Ni-3 5.307 6 9.23 2297100400011
DECAY-MON (79-AU-198-G,2.6941D,DG,411.8,0.9558) 95.58+-0.12% 2297100400012
CORRECTION For self-absorption in Au samples - factor 0.995 2297100400013
For decay during irradiation and variations in the 2297100400014
neutron flux. 2297100400015
FLAG (1.) Measurement by sample Ni-1 2297100400016
(2.) Measurement by sample Ni-2 2297100400017
(3.) Measurement by sample Ni-3 2297100400018
(4.) Weighted average of three sample runs 2297100400019
ERR-ANALYS (ERR-T) Total uncertainty propagated from 2297100400020
(ERR-SYS) Systematic uncertainty due to 2297100400021
- 197Au cross section (1.4%) 2297100400022
- Detector efficiency (2.0%) 2297100400023
- 198Au gamma ray intensity (0.13%) 2297100400024
- AMS standard (4.1%) 2297100400025
- 2297100400026
(ERR-S) Statistical uncertainty due to 2297100400027
- Sample position in activation (1.5%) 2297100400028
- Sample mass (197Au) (0.3%) 2297100400029
- counting statistics (198Au) (0.25%) 2297100400030
- statistical error (Ni-1,N-2,Ni-3) 2297100400031
-(5.5-13.5%) 2297100400032
(MONIT-ERR) Uncertainty in monitor reaction 2297100400033
STATUS (TABLE) Table V from Phys.Rev.,C95(2017)035803 2297100400034
HISTORY (20211025A) SD: KT -> KT-DUMMY. 2297100400035
ENDBIB 33 0 2297100400036
COMMON 4 3 2297100400037
KT-DUMMY KT-ERR MONIT MONIT-ERR 2297100400038
KEV KEV MB MB 2297100400039
25. 0.5 632. 9. 2297100400040
ENDCOMMON 3 0 2297100400041
DATA 4 4 2297100400042
DATA ERR-SYS ERR-S FLAG 2297100400043
MB MB MB NO-DIM 2297100400044
30.4 2.3 4.1 1. 2297100400045
29.0 2.2 1.1 2. 2297100400046
32.2 2.5 1.8 3. 2297100400047
29.9 2.3 0.9 4. 2297100400048
ENDDATA 6 0 2297100400049
ENDSUBENT 48 0 2297100499999
SUBENT 22971005 20211025 23052297100500001
BIB 6 16 2297100500002
REACTION (28-NI-58(N,G)28-NI-59,,SIG,,MXW) 2297100500003
ANALYSIS Multiplication of ENDF/B-VII.1 kT=30 keV MACS by 2297100500004
0.90, which the ratio of the measured kT=25 keV 2297100500005
SACS (29.9 mb) to the ENDF/B-VII.1 kT=25 keV 2297100500006
SACS (33.3 mb). 2297100500007
ERR-ANALYS (ERR-S) Total statistical 2297100500008
(ERR-SYS) Total systematical 2297100500009
ADD-RES Calculated MACS using ENDF/B-VII.1 : 2297100500010
kT,keV MACS kT,keV MACS 2297100500011
5. 34.7 40. 26.7 2297100500012
10. 43.2 50. 24.2 2297100500013
15. 40.1 60. 22.2 2297100500014
20. 36.2 80. 19.5 2297100500015
25. 32.9 100. 17.5 2297100500016
STATUS (TABLE) Table VII of Phys.Rev.,C95(2017)035803 2297100500017
HISTORY (20211025A) SD: ASSUMED deleted. 2297100500018
ENDBIB 16 0 2297100500019
NOCOMMON 0 0 2297100500020
DATA 4 1 2297100500021
KT DATA ERR-SYS ERR-S 2297100500022
KEV MB MB MB 2297100500023
30. 30.4 2.3 0.9 2297100500024
ENDDATA 3 0 2297100500025
ENDSUBENT 24 0 2297100599999
SUBENT 22971006 20211025 23052297100600001
BIB 11 21 2297100600002
REACTION 1((34-SE-78(N,G)34-SE-79,,SIG,,SPA)/ 2297100600003
(79-AU-197(N,G)79-AU-198,,SIG,,SPA)) 2297100600004
2(34-SE-78(N,G)34-SE-79,,SIG,,SPA) 2297100600005
SAMPLE Cd-Se compound, mass 216.8 milligram, Se-78 1.62E+20 2297100600006
Se-78 content 23.77%, Se-74 content 0.87%, 2297100600007
Se-80 - 46.9% 2297100600008
Second sample was enriched to 98.8% in Se-78 and 2297100600009
depleted to 0.01% in Se-74 - used at AMS 2297100600010
ANALYSIS Cross section value in Subent 22971.003 is 2297100600011
renormalized for new gold cross section 2297100600012
DECAY-MON (79-AU-198-G,3881.0MIN,DG,411.80,0.9558) 2297100600013
MONIT-REF (,R.Reifarth+,J,EPJ/P,133,424,2018) 2297100600014
CORRECTION Correction for revised gold standard: 622.7/586 =1.0622297100600015
ASSUMED (ASSUM,34-SE-78(N,G)34-SE-79,,SIG) For thermal neutrons2297100600016
REL-REF (R,,S.F.Mughabghab+,B,NEUT.CS 1A,,,1981) Se-78(n,gamma)2297100600017
cross section for thermal neutrons 2297100600018
ERR-ANALYS (DATA-ERR) Not specified 2297100600019
(ERR-1) Time-integrated neutron flux error 2297100600020
(MONIT-ERR) Uncertainty in monitor reaction 2297100600021
STATUS (TABLE) Table on p.253 of INDC(GER)-0053 2297100600022
HISTORY (20170404C) SD 2297100600023
ENDBIB 21 0 2297100600024
COMMON 5 3 2297100600025
KT-DUMMY KT-ERR ERR-1 MONIT MONIT-ERR 2297100600026
KEV KEV PER-CENT MB MB 2297100600027
25. 0.5 3. 622.7 6. 2297100600028
ENDCOMMON 3 0 2297100600029
DATA 6 1 2297100600030
DATA 1DATA-ERR 1DATA 2DATA-ERR 2ASSUM ASSUM-ERR 2297100600031
NO-DIM NO-DIM MB MB MB MB 2297100600032
0.104 0.017 65. 11. 0.43 0.02 2297100600033
ENDDATA 3 0 2297100600034
ENDSUBENT 33 0 2297100699999
ENDENTRY 6 0 2297199999999