ENTRY 22801 20230514 231722801 0 1 SUBENT 22801001 20230514 231722801 1 1 BIB 14 73 22801 1 2 TITLE Stellar neutron capture on 180-TA-m 22801 1 3 I.cross section measurement between 10 keV and 100 keV22801 1 4 AUTHOR (K.Wisshak,F.Voss,C.Arlandini,F.Becvar,O.Straniero, 22801 1 5 R.Gallino,M.Heil,F.Kaeppeler,M.Krticka,S.Masera, 22801 1 6 R.Reifarth,C.Travaglio) 22801 1 7 INSTITUTE (2GERKFK) Wisshak, Voss, Arlandini, Heil, Kaeppeler, 22801 1 8 (2ITYTUR) Gallino, Masera 22801 1 9 (2GERHEI) Travaglio 22801 1 10 (2ITYOAC) Straniero, Osservatorio astronomico di 22801 1 11 Collurania, Italy 22801 1 12 (1USALAN) Reifarth 22801 1 13 (3CZRCHU) Becvar, Krticka 22801 1 14 REFERENCE (J,PR/C,69,055801,2004) Main Reference 22801 1 15 (J,PRL,87,251102,2001) Data for KT=30 keV 22801 1 16 REL-REF (I,,F.Voss+,R,FZKA-6104,1998) Experimental and analysis22801 1 17 details 22801 1 18 (I,,D.Belic+,J,PR/C,65,035801,2002) Details of the 22801 1 19 180Ta-m sample preparation 22801 1 20 (M,,K.Wisshak+,P,INDC(GER)-048,3,200207) Abstracts. 22801 1 21 Same as JUEL-3996,3,200207 Report 22801 1 22 (I,22498001,F.Voss+,J,PR/C,59,1154,1999) 22801 1 23 Experimental and analysis details 22801 1 24 (M,22374001,K.Wisshak+,J,PR/C,48,1401,1993) - 22801 1 25 method of total cross section and relative errors 22801 1 26 calculation 22801 1 27 (I,22372001,K.Wisshak+,J,PR/C,45,2470,1992) - 22801 1 28 experimental details 22801 1 29 (I,22195001,K.Wisshak+,J,PR/C,42,1731,1990) 22801 1 30 - experimental details 22801 1 31 (I,22372001,K.Wisshak+,J,PR/C,45,2470,1992) - 22801 1 32 experimental details 22801 1 33 FACILITY (VDG,2GERKFK) 3.75 MV Van de Graaff accelerator 22801 1 34 pulse width is apprx. 1 ns, repetition rate 250 kHz, 22801 1 35 average beam current 1.5-2 microAmperes 22801 1 36 INC-SOURCE (P-LI7) Metallic Li target of about 1 mg/cm2 bombarded 22801 1 37 with pulsed proton beam with energies 20 and 30 keV 22801 1 38 above Li-7(p,n)Be-7 reaction threshold of 1881 keV 22801 1 39 INC-SPECT .Continuous neutron spectra in the energy range 10-80 22801 1 40 keV (20 keV protons) and 5-100 keV (30 keV protons) 22801 1 41 giving neutrons in energy ranges 3-100, 3-225 keV. 22801 1 42 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 22801 1 43 DETECTOR (SCIN,D4PI) Karlsruhe 4Pi-Ba-F2 detector consisting of 22801 1 44 29 hexagonal and 12 pentagonal crystals forming 22801 1 45 a spherical Ba-F2 shell of 15 cm thickness and 10 cm 22801 1 46 inner radius. Resolution is 7% at 2.5 MeV gamma 22801 1 47 energy, peak efficiency 90% at 1 MeV 22801 1 48 (GLASD) Li-6 glass detector as neutron flux monitor 22801 1 49 SAMPLE 1.Standard sample Au-197, 11.5 mm diameter, 0.125 mm = 22801 1 50 0.7427E-3 atoms/b thickness, weight 0.2523 gram, in a22801 1 51 graphite container 22 mm diam, 3 mm thick, 22801 1 52 1.8343 gram weight 22801 1 53 2.Graphite dummy sample 22 mm diameter, 3 mm thick, 22801 1 54 1.8702 gram weight, 22801 1 55 3.Isotopically enriched Ta2-O5 oxide sample, weight 22801 1 56 0.1501 gram, 180-m-Ta content is 5.5%, 11.5 mm diam, 22801 1 57 0.7 mm = 0.3939E-3 atoms/barn, in a 22 mm diam, 3 mm 22801 1 58 thick graphite container 1.8708 gram weight. 22801 1 59 4.Natural tantalum sample for monitoring of isotopic 22801 1 60 content of the irradiating sample, 11.5 mm diam, 22801 1 61 0.7 mm = 0.3933 atoms/barn thick, weight 0.1499 gram 22801 1 62 CORRECTION .Corrections were made for multiple scattering, 22801 1 63 for isotopic impurities, for neutron self-absorption, 22801 1 64 for undetected events, for signal/background ratio for22801 1 65 different neutron energies 22801 1 66 ADD-RES (THEO) Statistical model calculations with the help 22801 1 67 of CASINO code 22801 1 68 HISTORY (20030422C) S.M. 22801 1 69 (20050204A) Data added from main reference - 5 Subents22801 1 70 (20121229A) SD: EN-MEAN -> KT and values were corrected22801 1 71 in Subents 7. ERR-ANALYS was update in all Subents. 22801 1 72 Subent 2 deleted (value is already presented in Sub.7.22801 1 73 Ref. on report was corrected (KFK- => FZKA-) 22801 1 74 (20230514A) SD: Corrections in Subents 005, 006. 22801 1 75 ENDBIB 73 0 22801 1 76 NOCOMMON 0 0 22801 1 77 ENDSUBENT 76 0 22801 199999 NOSUBENT 22801002 20121229 22342280100200001 SUBENT 22801003 20121229 22342280100300001 BIB 5 19 2280100300002 REACTION ((73-TA-180-M(N,G)73-TA-181,,SIG,,AV)/ 2280100300003 (79-AU-197(N,G)79-AU-198,,SIG,,AV)) Averaged over 2280100300004 energy interval given in data section 2280100300005 MONITOR .Absolute measurement 2280100300006 STATUS (TABLE) Data from Table III of PR/C,69,(5),055801 2280100300007 ERR-ANALYS (ERR-T) Total error includes ERR-S + ERR-SYS 2280100300008 (ERR-SYS) Total systematic error includes: 2280100300009 (ERR-1) Error due to flight path uncertainty 2280100300010 (ERR-2) Error due to neutron flux normalization 2280100300011 (ERR-6) Multiple scattering and self-shielding error 2280100300012 (ERR-3) Elemental impurity error 2280100300013 (ERR-4) Isotopic composition error 2280100300014 (ERR-5) Isotopic correction error 2280100300015 (ERR-7) Undetected events error 2280100300016 (ERR-8) Number of events with multiplicities >= 5 2280100300017 error 2280100300018 (ERR-9) Percentage of events with multiplicities >= 5 2280100300019 error 2280100300020 HISTORY (20121229A) SD: ERR-ANALYS update. 2280100300021 ENDBIB 19 0 2280100300022 COMMON 10 6 2280100300023 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 2280100300024 ERR-7 ERR-8 ERR-9 ERR-SYS 2280100300025 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2280100300026 PER-CENT PER-CENT PER-CENT PER-CENT 2280100300027 0.1 0.2 0.5 0.1 0.2 0.22280100300028 0.6 3.0 4.0 5.1 2280100300029 ENDCOMMON 6 0 2280100300030 DATA 5 10 2280100300031 EN-MIN EN-MAX DATA ERR-S ERR-T 2280100300032 KEV KEV NO-DIM PER-CENT PER-CENT 2280100300033 10. 12.5 3.54 39. 39. 2280100300034 12.5 15. 1.55 67. 67. 2280100300035 15. 20. 3.70 19. 20. 2280100300036 20. 25. 3.39 17. 18. 2280100300037 25. 30. 2.51 15. 16. 2280100300038 30. 40. 2.87 9.1 10. 2280100300039 40. 50. 2.38 9.1 10. 2280100300040 50. 60. 2.76 7.6 9.2 2280100300041 60. 80. 2.51 6.4 8.2 2280100300042 80. 100. 2.73 8.1 9.6 2280100300043 ENDDATA 12 0 2280100300044 ENDSUBENT 43 0 2280100399999 SUBENT 22801004 20121229 22342280100400001 BIB 6 16 2280100400002 REACTION ((73-TA-181(N,G)73-TA-182,,SIG,,AV)/ 2280100400003 (79-AU-197(N,G)79-AU-198,,SIG,,AV)) Averaged over 2280100400004 energy interval given in data section 2280100400005 MONITOR .Absolute measurement 2280100400006 METHOD (TOF) Flight path is 78.8 cm, resolution 1.2 ns/m 2280100400007 (GSPEC) 2280100400008 (STTA) Stack target irradiation 2280100400009 STATUS (TABLE) Data from Table III of PR/C,69,(5),055801 2280100400010 ERR-ANALYS (ERR-T) Total error includes ERR-S + ERR-SYS 2280100400011 (ERR-SYS) Total systematic error includes: 2280100400012 (ERR-1) Error due to flight path uncertainty 2280100400013 (ERR-2) Error due to neutron flux normalization 2280100400014 (ERR-3) Elemental impurity error 2280100400015 (ERR-6) Multiple scattering and self-shielding error 2280100400016 (ERR-7) Undetected events error 2280100400017 HISTORY (20121229A) SD: ERR-ANALYS update. 2280100400018 ENDBIB 16 0 2280100400019 COMMON 6 3 2280100400020 ERR-1 ERR-2 ERR-3 ERR-6 ERR-7 ERR-SYS 2280100400021 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 2280100400022 0.1 0.2 0.1 0.2 0.4 0.52280100400023 ENDCOMMON 3 0 2280100400024 DATA 5 10 2280100400025 EN-MIN EN-MAX DATA ERR-S ERR-T 2280100400026 KEV KEV NO-DIM PER-CENT PER-CENT 2280100400027 10. 12.5 1.32 6.2 6.2 2280100400028 12.5 15. 1.43 5.7 5.7 2280100400029 15. 20. 1.39 3.4 3.4 2280100400030 20. 25. 1.44 2.9 2.9 2280100400031 25. 30. 1.37 2.4 2.5 2280100400032 30. 40. 1.33 1.7 1.8 2280100400033 40. 50. 1.30 1.6 1.7 2280100400034 50. 60. 1.26 1.6 1.7 2280100400035 60. 80. 1.25 1.4 1.5 2280100400036 80. 100. 1.25 2.4 2.5 2280100400037 ENDDATA 12 0 2280100400038 ENDSUBENT 37 0 2280100499999 SUBENT 22801005 20230514 231722801 5 1 BIB 6 18 22801 5 2 REACTION (73-TA-180-M(N,G)73-TA-181,,SIG,,AV) Averaged over 22801 5 3 energy interval given in data section 22801 5 4 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 22801 5 5 MONIT-REF (22099002,W.Ratynski+,J,PR/C,37,595,1988) 22801 5 6 (,R.L.Macklin,W,MACKLIN,1982) 22801 5 7 The experimental ratios were converted into absolute 22801 5 8 cross sections by means of the gold cross section of 22801 5 9 Macklin (priv.comm.), after normalization by a factor 22801 5 10 of 0.989 to the absolute value of Ratynski et. al. 22801 5 11 STATUS (TABLE,,K.Wisshak,J,PR/C,69,055801,2004) Table IV 22801 5 12 (DEP,22588003) see MONIT-REF 22801 5 13 ERR-ANALYS (DATA-ERR) Total uncertainty from ratio. 22801 5 14 Uncertainties of cross-sections can be calculated from 22801 5 15 the uncertainty of the cross-section ratio by adding 22801 5 16 quadratically the 1.5% uncertainty of the gold standard22801 5 17 (MONIT-ERR) Uncertainty of the gold standard 22801 5 18 HISTORY (20121229A) SD: ERR-ANALYS update. 22801 5 19 (20230514A) SD: MONIT-ERR deleted from DATA section. 22801 5 20 ENDBIB 18 0 22801 5 21 COMMON 1 3 22801 5 22 MONIT-ERR 22801 5 23 PER-CENT 22801 5 24 1.5 22801 5 25 ENDCOMMON 3 0 22801 5 26 DATA 5 10 22801 5 27 EN-MIN EN-MAX DATA DATA-ERR MONIT 22801 5 28 KEV KEV MB MB MB 22801 5 29 10. 12.5 3772. 1470. 1067. 22801 5 30 12.5 15. 1360. 911. 878. 22801 5 31 15. 20. 2736. 547. 739. 22801 5 32 20. 25. 2036. 366. 600. 22801 5 33 25. 30. 1431. 229. 571. 22801 5 34 30. 40. 1435. 143. 500. 22801 5 35 40. 50. 1032. 103. 433. 22801 5 36 50. 60. 1076. 99. 390. 22801 5 37 60. 80. 877. 72. 349. 22801 5 38 80. 100. 813. 78. 298. 22801 5 39 ENDDATA 12 0 22801 5 40 ENDSUBENT 39 0 22801 599999 SUBENT 22801006 20230514 231722801 6 1 BIB 6 17 22801 6 2 REACTION (73-TA-181(N,G)73-TA-182,,SIG,,AV) 22801 6 3 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 22801 6 4 MONIT-REF (22099002,W.Ratynski+,J,PR/C,37,595,1988) 22801 6 5 (,R.L.Macklin,W,MACKLIN,1982) 22801 6 6 The experimental ratios were converted into absolute 22801 6 7 cross sections by means of the gold cross section of 22801 6 8 Macklin (priv.comm.), after normalization by a factor 22801 6 9 of 0.989 to the absolute value of Ratynski et. al. 22801 6 10 STATUS (TABLE,,K.Wisshak,J,PR/C,69,055801,2004) Table IV 22801 6 11 (DEP,22801004) 22801 6 12 ERR-ANALYS (DATA-ERR) Total uncertainty from ratio. 22801 6 13 Uncertainties of cross-sections can be calculated from 22801 6 14 the uncertainty of the cross-section ratio by adding 22801 6 15 quadratically the 1.5% uncertainty of the gold standard22801 6 16 (MONIT-ERR) Uncertainty of the gold standard 22801 6 17 HISTORY (20121229A) SD: BIB update. ERR-T -> DATA-ERR 22801 6 18 (20230514A) SD: MONIT-ERR deleted from DATA section. 22801 6 19 ENDBIB 17 0 22801 6 20 COMMON 1 3 22801 6 21 MONIT-ERR 22801 6 22 PER-CENT 22801 6 23 1.5 22801 6 24 ENDCOMMON 3 0 22801 6 25 DATA 5 10 22801 6 26 EN-MIN EN-MAX DATA DATA-ERR MONIT 22801 6 27 KEV KEV MB MB MB 22801 6 28 10. 12.5 1408. 90. 1067. 22801 6 29 12.5 15. 1225. 74. 878. 22801 6 30 15. 20. 1027. 38. 739. 22801 6 31 20. 25. 864. 28. 600. 22801 6 32 25. 30. 780. 23. 571. 22801 6 33 30. 40. 664. 16. 500. 22801 6 34 40. 50. 562. 13. 433. 22801 6 35 50. 60. 493. 11. 390. 22801 6 36 60. 80. 436. 9. 349. 22801 6 37 80. 100. 374. 11. 298. 22801 6 38 ENDDATA 12 0 22801 6 39 ENDSUBENT 38 0 22801 699999 SUBENT 22801007 20121229 22342280100700001 BIB 7 27 2280100700002 REACTION (73-TA-180-M(N,G)73-TA-181,,SIG,,MXW,DERIV) Derived 2280100700003 from measured and calculated cross section values 2280100700004 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 2280100700005 ANALYSIS .Averaging in the 0 - 700 keV interval was made in 2280100700006 three steps: I-1 -> 0-20 keV, I-2 -> 20 - 100 keV 2280100700007 and I-3 -> 100 - 700 keV. Step I-2 corresponds to the 2280100700008 measured values. I-1 and I-3 are taken from calculated2280100700009 results normalized to the present measurements 2280100700010 STATUS (TABLE) Data from Table VI of PR/C,69,(5),055801 2280100700011 (DEP,22801003) 2280100700012 (DEP,22801006) 2280100700013 MISC-COL (MISC1) I-1 2280100700014 (MISC2) I-2 2280100700015 (MISC3) I-3 2280100700016 ERR-ANALYS (ERR-T) Uncertainty of Maxwellian-averaged 2280100700017 cross-section 2280100700018 The uncertainty of 1.5% of the gold standard is not 2280100700019 included in the quoted uncertainty since it cancels 2280100700020 out in most applications of relevance for nuclear 2280100700021 astrophysics 2280100700022 (ERR-S) Statistical error 2280100700023 (ERR-SYS) The overall systematic uncertainties of the 2280100700024 Maxwellian averaged cross sections include the 2280100700025 uncertainties of the cross-section ratios and of the 2280100700026 extrapolated components, I-1 and I-3. 2280100700027 HISTORY (20121229A) SD: EN-MEAN -> KT and values were corrected2280100700028 BIB update. 2280100700029 ENDBIB 27 0 2280100700030 NOCOMMON 0 0 2280100700031 DATA 11 14 2280100700032 KT DATA ERR-S ERR-SYS ERR-T MISC1 2280100700033 MISC1-ERR MISC2 MISC2-ERR MISC3 MISC3-ERR 2280100700034 KEV MB MB MB MB MB 2280100700035 MB MB MB MB MB 2280100700036 8. 3059. 185. 156. 242. 2550. 2280100700037 178. 509. 50. 0. 2280100700038 10. 2695. 153. 137. 205. 2009. 2280100700039 140. 686. 61. 0. 2280100700040 15. 2143. 109. 109. 154. 1211. 2280100700041 84. 926. 70. 6.0 0.3 2280100700042 20. 1824. 88. 93. 128. 803. 2280100700043 56. 992. 68. 29. 1.5 2280100700044 25. 1613. 75. 82. 111. 569. 2280100700045 40. 974. 63. 70. 3.5 2280100700046 30. 1465. 66. 75. 100. 424. 2280100700047 30. 920. 58. 121. 6.1 2280100700048 40. 1269. 52. 65. 83. 261. 2280100700049 18. 781. 47. 227. 11. 2280100700050 50. 1145. 43. 58. 72. 176. 2280100700051 12. 650. 38. 319. 16. 2280100700052 52. 1125. 42. 57. 71. 165. 2280100700053 12. 626. 37. 334. 17. 2280100700054 60. 1058. 39. 54. 67. 127. 2280100700055 8.9 541. 32. 390. 20. 2280100700056 70. 993. 35. 51. 62. 95.8 2280100700057 6.7 454. 26. 443. 22. 2280100700058 80. 942. 33. 48. 58. 74.9 2280100700059 5.2 385. 22. 482. 24. 2280100700060 90. 900. 32. 46. 56. 60.1 2280100700061 4.2 330. 19. 510. 26. 2280100700062 100. 863. 31. 44. 54. 49.3 2280100700063 3.5 285. 16. 529. 26. 2280100700064 ENDDATA 32 0 2280100700065 ENDSUBENT 64 0 2280100799999 ENDENTRY 7 0 2280199999999