ENTRY 22820 20130110 22342282000000001 SUBENT 22820001 20130110 22342282000100001 BIB 18 143 2282000100002 TITLE .A systematic investigation of reaction cross sections 2282000100003 and isomer ratios for neutrons up to 20 MeV on 2282000100004 Ni-isotopes and Co-59 by measurements with activation 2282000100005 technique and new model studies of underlying 2282000100006 reaction mechanisms 2282000100007 AUTHOR (V.Semkova,V.Avrigeanu,T.Glodariu,A.J.Koning, 2282000100008 A.J.M.Plompen,D.L.Smith,S.Sudar,P.Reimer,R.Forrest) 2282000100009 INSTITUTE (2ZZZGEL) Plompen, Reimer, Semkova, Cserpak 2282000100010 (1USAANL) Smith - Nuclear Engineering Division 2282000100011 (2GERJUL) Plompen, Reimer, Semkova - IRMM 2282000100012 (3BULBLA) Semkova - Institute for Nucl.Research and 2282000100013 Nuclear Energy 2282000100014 (3HUNDEB) Sudar - Institute for Experimental Physics 2282000100015 (2NEDRCN) Koning - Nuclear Research and Consultancy 2282000100016 Group, Petten 2282000100017 (2UK CUL) Forrest - Culham Science Center 2282000100018 (3RUMBUC) Avrigeanu, Glodariu 2282000100019 REFERENCE (J,NP/A,730,255,2004) Main reference, data for 2282000100020 Ni and Co 2282000100021 (R,EUR-20820-EN,2003) Detailed reference,data are 2282000100022 given for Ni, Co, Pb, Zr 2282000100023 REL-REF (M,,A.J.M.Plompen+,C,2002SEOUL,,(5C04),2002) 2282000100024 Calculation of gamma-ray strength function 2282000100025 (M,22818001,A.J.M.Plompen+,J,NSTS,2,(1),192,2002) 2282000100026 Experimental details 2282000100027 FACILITY (VDG,2ZZZGEL) 7-MV Van de Graaff accelerator, neutron 2282000100028 physics unit, Institute for Reference Materials and 2282000100029 Measurements, GEEL, Belgium. 2282000100030 INC-SOURCE (D-T) 1-H-3(d,n)2-He-4. Deuterons incident on a metal 2282000100031 Titanium-tritide target (approx. 2 mg/cm**2 thick) 2282000100032 on a silver backing (0.5 mm thick). This reaction 2282000100033 generated the primary neutrons with energies in the 2282000100034 range 14 to 20.5 MeV. Samples were placed at angles 2282000100035 from 0 to 75 degrees. The energy scale uncertainty 2282000100036 is 5 keV. Deuteron energies of 1, 2, 3, and 4 MeV 2282000100037 were used. 2282000100038 (P-T) 1-H-3(p,n)2-He-3 reaction was used to produce 2282000100039 neutrons with energies between 1 and 3.4 MeV 2282000100040 INC-SPECT .The neutron spectra from this source reaction were 2282000100041 quasi-monoenergetic. The effective spread in the neut.2282000100042 energy of the primary group was deduced from the 2282000100043 target thickness, kinematics, and sample geometry. 2282000100044 .Particular neutron flux in each case was determined 2282000100045 using neutron-spectrum information obtained by the 2282000100046 .Time-of-Flight method and the spectral index method 2282000100047 that involves 115-In(N,N')115m-In,58-Ni(N,P)58m+g-Co, 2282000100048 27-Al(N,P)27-Mg , 56-Fe(N,P)56-Mn,27-Al(N,A)24-Na and 2282000100049 93-Nb(N,2N)92m-Nb monitor reactions with distinct 2282000100050 energy thresholds. 2282000100051 METHOD (ACTIV) Cross sections were measured using the neutron 2282000100052 activation method. 2282000100053 (STTA) Packets containing the samples of the element 2282000100054 and monitor foils which were irradiated in well- 2282000100055 defined geometries near the target of the accelerator.2282000100056 CORRECTION .Corrections for position and sample distance from the 2282000100057 detector were determined using calibration sources 2282000100058 for coincidence summing in certain cases. 2282000100059 . Other corrections were determined for gamma-ray 2282000100060 abundance, gamma-ray absorption in the samples, 2282000100061 for internal conversion effects, and sample geometry. 2282000100062 .The raw experimental data were corrected for the 2282000100063 following effects: 2282000100064 . Gamma-ray detection efficiency. 2282000100065 . Gamma-ray branching factors. 2282000100066 . Gamma-ray coincidence summing effects. 2282000100067 . Geometric effects. 2282000100068 . Gamma-ray absorption. 2282000100069 . Absorption and scattering of neutrons. 2282000100070 . Low-energy neutrons from the target. 2282000100071 . Decay of product nuclei. 2282000100072 . Fluctuations in neutron flux during the 2282000100073 irradiation period. 2282000100074 . Isotopic abundances. 2282000100075 . Sample chemical composition and impurities. 2282000100076 DETECTOR (HPGE) High-purity germanium detectors were used. 2282000100077 This included one planar detector with a carbon fiber 2282000100078 window to enable photons with energies below 100 keV 2282000100079 to be measured. 2282000100080 (BF3) Boron-trifluoride detector in a long-counter 2282000100081 configuration. 2282000100082 MONITOR (13-AL-27(N,A)11-NA-24,,SIG) Primary standard 2282000100083 used directly or indirectly for all the cross section 2282000100084 determinations. 2282000100085 (49-IN-115(N,INL)49-IN-115-M,,SIG) 2282000100086 Spectral index component. This reaction is very 2282000100087 sensitive to the lowest-energy background neutrons. 2282000100088 (13-AL-27(N,P)12-MG-27,,SIG) Secondary 2282000100089 standard and spectral index component. 2282000100090 (26-FE-56(N,P)25-MN-56,,SIG) Secondary 2282000100091 standard and spectral index component. 2282000100092 (41-NB-93(N,2N)41-NB-92-M,,SIG) Secondary standard 2282000100093 and spectral index component. 2282000100094 All relative measurements were ultimately normalized 2282000100095 to the primary standard. 2282000100096 MONIT-REF (,H.Conde+,R,INDC(SEC)-101,1992) - for the 2282000100097 27Al(n,alpha)24Na 2282000100098 (,M.Wagner+,B,PH-DAT,13,5,1990) - for the 2282000100099 27Al(n,alpha)24Na and 93Nb(n,2n)92mNb reactions 2282000100100 (,A.B.Smith+,R,ANL-NDM-115,1990) 2282000100101 - for the 115In(n,n')115mIn reaction 2282000100102 (,P.L.Rose+,R,BNL-201,1991) Evaluated nuclear data 2282000100103 file, ENDF/B-VI - for the 58Ni(n,p)58m+gCo, 2282000100104 27Al(n,p)27Mg and 56Fe(n,p)56Mn reactions 2282000100105 (,M.Wagneer+,R,INDC(AUS)-14,1991) - for the 2282000100106 27Al(n,alpha)24Na and 93Nb(n,2n)92mNb reactions 2282000100107 DECAY-DATA (11-NA-24,14.9590HR,DG) 2282000100108 (12-MG-27,9.458MIN,DG) 2282000100109 (25-MN-56,2.5785HR,DG) 2282000100110 (41-NB-92-M,10.15D,DG) 2282000100111 (49-IN-115-M,4.486HR,DG) 2282000100112 ERR-ANALYS (ERR-T) Total errors for the cross sections were 2282000100113 deduced by combining partial errors from various 2282000100114 sources in quadrature. Error sources considered were-2282000100115 (ERR-S,1.,15.) statistical counting errors. 2282000100116 (ERR-1,2.,3.) uncertainty in detector efficiencies. 2282000100117 (ERR-2,0.01,3.) uncertainty in decay branching factors.2282000100118 (ERR-3,0.,7.) uncertainty in coincidence summing 2282000100119 corrections. 2282000100120 (ERR-4,0.1,5.) uncertainty in the absorption of 2282000100121 gamma rays 2282000100122 (ERR-5,,1.) sample mass error 2282000100123 (ERR-6,,1.) counting time error 2282000100124 (ERR-7,0.,12.) uncertainty in low-energy neutron 2282000100125 corrections. 2282000100126 (MONIT-ERR,0.5,2.) uncertainty in monitor reactions 2282000100127 (ERR-8,0.5,2.) neutron irradiation geometry error 2282000100128 (ERR-9,0.01,4.) uncertainty in decay half lives 2282000100129 COMMENT Monitor cross-section values at arbitrary neutron 2282000100130 energies were derived from tabulated values by means 2282000100131 of linear interpolation. The quoted neutron energy 2282000100132 resolution is the root-mean-square (rms) of the 2282000100133 distribution of primary neutrons. 2282000100134 STATUS (TABLE) Tabl.1 from Nucl.Phys., A730,255,2004 2282000100135 (APRVD) Approved by Dr. V.Semkova with recommendation 2282000100136 to delete ref. Reimer+,J,PR/C,65,014604,2002 2282000100137 (COREL,22684001) 2282000100138 HISTORY (20040107C) .J.O.S. 2282000100139 (20060802U) Reference PR/C,65 ... corrected 2282000100140 (20101105A) SD: REACTION code was corrected in Subent 32282000100141 Author's name corrected: S Sudar => S.Sudar 2282000100142 All min-max values of uncertainties deleted from COMMON2282000100143 Two ref. moved to REL-REF. Ref. on Reimer deleted 2282000100144 according to e-mail from author. 2282000100145 ENDBIB 143 0 2282000100146 NOCOMMON 0 0 2282000100147 ENDSUBENT 146 0 2282000199999 SUBENT 22820002 20030703 00002282000200001 BIB 7 18 2282000200002 REACTION (28-NI-58(N,P)27-CO-58,,SIG) 2282000200003 DECAY-DATA (27-CO-58-G,70.86D,DG,810.759,0.9945) 2282000200004 (27-CO-58-M,9.04HR,DG) 2282000200005 SAMPLE .Metallic Nickel Samples with Natural Isotopic 2282000200006 Abundance. Most Measurements Used High-Purity 2282000200007 (99.995%) Nickel Samples, 13 mm in Diameter by 0.1 mm 2282000200008 Thick. 2282000200009 ANALYSIS Cross Sections Obtained by Allowing For Complete 2282000200010 Decay of the Isomeric State. 2282000200011 MONITOR Mostly Determined Relative to 27Al(N,ALPHA)24Na 2282000200012 Standard. 2282000200013 COMMENT These Cross Sections were Obtained by First Allowing 2282000200014 For All Nuclei Residing in the Isomeric State at 2282000200015 24.889-KeV Excitation in Co-58 to Decay to the Ground 2282000200016 State. The Cross Section Values Refer to the Total 2282000200017 N,P Cross Section For Formation of the Isomer Plus 2282000200018 The Ground State of Co-58.(BY THE AUTHORS) 2282000200019 STATUS (APRVD) Plompen, 20030702 2282000200020 ENDBIB 18 0 2282000200021 NOCOMMON 0 0 2282000200022 DATA 4 12 2282000200023 EN EN-RSL-FW DATA ERR-T 2282000200024 MEV MEV MB MB 2282000200025 1.29 0.08 8. 0.6 2282000200026 1.99 0.05 47. 3. 2282000200027 2.41 0.04 116. 10. 2282000200028 14.81 0.17 291. 20. 2282000200029 15.27 0.16 260. 20. 2282000200030 15.68 0.18 228. 20. 2282000200031 16.26 0.20 181. 15. 2282000200032 17.03 0.17 135. 10. 2282000200033 17.19 0.18 120. 12. 2282000200034 18.82 0.18 92. 15. 2282000200035 19.28 0.09 78. 14. 2282000200036 20.34 0.08 71. 14. 2282000200037 ENDDATA 14 0 2282000200038 ENDSUBENT 37 0 2282000299999 SUBENT 22820003 20130110 22342282000300001 BIB 7 17 2282000300002 REACTION ((28-NI-60(N,P)27-CO-60,,SIG)+ 2282000300003 (28-NI-61(N,X)27-CO-60,,SIG,,RAB)+ 2282000300004 (28-NI-62(N,X)27-CO-60,,SIG,,RAB)) 2282000300005 DECAY-DATA (27-CO-60-G,1925.3D,DG,1332.492,0.999826) 2282000300006 (27-CO-60-M,10.467MIN,DG,58.603,0.020359) 2282000300007 MONITOR Usually determined relative to the 27Al(N,alpha)24Na 2282000300008 standard. 2282000300009 SAMPLE .Natural nickel metal samples of 99.995% purity, 2282000300010 13 mm diam, 0.1 mm thick. 2282000300011 Isotopic abundance - 2282000300012 58Ni - 68.077%, 60Ni - 22.223%, 61Ni - 1.14%, 2282000300013 62Ni - 3.63%, 64Ni - 0.926% 2282000300014 ANALYSIS Cross sections obtained by allowing for complete decay 2282000300015 of the isomeric state to ground state. 2282000300016 STATUS (TABLE) .From table 1 NP/A,730,255,2004 2282000300017 (COREL,22684007) 2282000300018 HISTORY (20101105A) SD: REACTION code was corrected. 2282000300019 ENDBIB 17 0 2282000300020 NOCOMMON 0 0 2282000300021 DATA 4 6 2282000300022 EN EN-RSL-FW DATA ERR-T 2282000300023 MEV MEV MB MB 2282000300024 13.32 0.13 161. 7. 2282000300025 15.27 0.16 119. 7. 2282000300026 16.05 0.19 102. 4. 2282000300027 17.73 0.12 69. 6. 2282000300028 19.29 0.09 55. 3. 2282000300029 19.94 0.09 50. 5. 2282000300030 ENDDATA 8 0 2282000300031 ENDSUBENT 30 0 2282000399999 SUBENT 22820004 20040113 00002282000400001 BIB 4 11 2282000400002 REACTION (28-NI-58(N,X)27-CO-57,,SIG) 2282000400003 DECAY-DATA (27-CO-57,271.74D,DG,122.061,0.856, 2282000400004 DG,136.47,0.1068) 2282000400005 SAMPLE Metallic nickel samples with natural isotopic 2282000400006 abundance. Most measurements used high-purity 2282000400007 (99.995%) nickel samples, 13 mm diameter by 0.1 mm 2282000400008 thick. Isotopic abundance - 58Ni - 68.077%, 2282000400009 60Ni - 22.223%, 61Ni - 1.14%, 62Ni - 3.63%, 2282000400010 64Ni - 0.926% 2282000400011 STATUS .From table 1 of main reference 2282000400012 (COREL,22684005) 2282000400013 ENDBIB 11 0 2282000400014 NOCOMMON 0 0 2282000400015 DATA 4 12 2282000400016 EN EN-RSL-FW DATA ERR-T 2282000400017 MEV MEV MB MB 2282000400018 14.81 0.17 658. 27. 2282000400019 15.27 0.16 704. 28. 2282000400020 15.68 0.18 729. 28. 2282000400021 16.05 0.19 749. 35. 2282000400022 16.26 0.20 774. 35. 2282000400023 17.03 0.17 794. 35. 2282000400024 17.19 0.18 797. 60. 2282000400025 17.58 0.17 815. 31. 2282000400026 18.36 0.15 831. 33. 2282000400027 18.82 0.18 849. 37. 2282000400028 19.29 0.09 850. 37. 2282000400029 20.35 0.08 875. 40. 2282000400030 ENDDATA 14 0 2282000400031 ENDSUBENT 30 0 2282000499999 SUBENT 22820005 20040113 00002282000500001 BIB 6 15 2282000500002 REACTION (28-NI-58(N,P)27-CO-58-M/T,,SIG/RAT) 2282000500003 SAMPLE .Natural nickel metal samples of 99.995% purity, 2282000500004 13 mm diam, 0.1 mm thick. Isotopic abundance - 2282000500005 58Ni - 68.077%, 60Ni - 22.223%, 61Ni - 1.14%, 2282000500006 62Ni - 3.63%, 64Ni - 0.926% 2282000500007 DECAY-DATA (27-CO-58-G,70.86D,DG,810.759,0.9945) 2282000500008 (27-CO-58-M,9.04HR,DG) 2282000500009 ANALYSIS Isomeric ratio determined by following the decay 2282000500010 curve of the 58Co ground state activity. The 2282000500011 metastable state decays entirely to the ground state. 2282000500012 STATUS .From table 1 of main ref. 2282000500013 (COREL,22684003) 2282000500014 COMMENT These cross section isomer ratios were determined by 2282000500015 measuring the decay curve for the 70.86-day Co-58 2282000500016 ground-state activity. 2282000500017 ENDBIB 15 0 2282000500018 NOCOMMON 0 0 2282000500019 DATA 4 10 2282000500020 EN EN-RSL-FW DATA ERR-T 2282000500021 MEV MEV NO-DIM NO-DIM 2282000500022 0.97 0.04 0.3 0.05 2282000500023 1.29 0.08 0.30 0.05 2282000500024 1.40 0.04 0.29 0.04 2282000500025 1.99 0.05 0.31 0.05 2282000500026 2.41 0.04 0.24 0.02 2282000500027 3.41 0.04 0.29 0.02 2282000500028 15.27 0.16 0.55 0.06 2282000500029 16.26 0.20 0.55 0.04 2282000500030 17.03 0.17 0.54 0.04 2282000500031 19.28 0.09 0.56 0.05 2282000500032 ENDDATA 12 0 2282000500033 ENDSUBENT 32 0 2282000599999 SUBENT 22820006 20040113 00002282000600001 BIB 5 10 2282000600002 REACTION (28-NI-58(N,P)27-CO-58-M,,SIG) 2282000600003 DECAY-DATA (27-CO-58-M,9.04HR,DG) 2282000600004 SAMPLE .Metallic nickel samples with natural isotopic 2282000600005 abundance. Most measurements used high-purity 2282000600006 (99.995%) nickel samples, 13 mm diameter by 0.1 mm 2282000600007 thick. 2282000600008 ANALYSIS .Derived from measured total cross sections and 2282000600009 isomeric ratio for metastable state to total. 2282000600010 STATUS .From table 1 of main reference 2282000600011 (COREL,22684004) 2282000600012 ENDBIB 10 0 2282000600013 NOCOMMON 0 0 2282000600014 DATA 4 7 2282000600015 EN EN-RSL-FW DATA ERR-T 2282000600016 MEV MEV MB MB 2282000600017 1.29 0.08 2.4 0.4 2282000600018 1.99 0.05 15. 2. 2282000600019 2.41 0.04 26. 3. 2282000600020 15.27 0.16 143. 10. 2282000600021 16.26 0.20 99. 7. 2282000600022 17.03 0.17 73. 6. 2282000600023 19.28 0.09 44. 4. 2282000600024 ENDDATA 9 0 2282000600025 ENDSUBENT 24 0 2282000699999 SUBENT 22820007 20030703 00002282000700001 BIB 4 7 2282000700002 REACTION (28-NI-58(N,2N)28-NI-57,,SIG) 2282000700003 DECAY-DATA (28-NI-57,35.60HR,DG,1377.63,0.817) 2282000700004 SAMPLE .Metallic Nickel Samples with Natural Isotopic 2282000700005 Abundance. Most Measurements Used High-Purity 2282000700006 (99.995%) Nickel Samples, 13 mm Diameter by 0.1 mm 2282000700007 Thick. 2282000700008 STATUS (APRVD) Plompen, 20030702 2282000700009 ENDBIB 7 0 2282000700010 NOCOMMON 0 0 2282000700011 DATA 4 9 2282000700012 EN EN-RSL-FW DATA ERR-T 2282000700013 MEV MEV MB MB 2282000700014 14.81 0.17 38. 2. 2282000700015 15.27 0.16 45. 3. 2282000700016 15.80 0.25 51. 3. 2282000700017 16.14 0.28 55. 4. 2282000700018 17.19 0.18 65. 4. 2282000700019 17.73 0.12 64. 4. 2282000700020 18.04 0.12 71. 7. 2282000700021 18.82 0.18 75. 4. 2282000700022 20.25 0.08 82. 6. 2282000700023 ENDDATA 11 0 2282000700024 ENDSUBENT 23 0 2282000799999 SUBENT 22820008 20040113 00002282000800001 BIB 7 18 2282000800002 REACTION (28-NI-60(N,P)27-CO-60-M,,SIG) 2282000800003 DECAY-DATA (27-CO-60-M,10.467MIN,DG,58.603,0.020359) 2282000800004 MONITOR Usually determined relative to the 27Al(N,alpha)24Na 2282000800005 standard. 2282000800006 SAMPLE .Metallic nickel samples with natural isotopic 2282000800007 abundance. Most measurements used high-purity 2282000800008 (99.995%) nickel samples, 13 mm diameter by 0.1 mm 2282000800009 thick. 2282000800010 CORRECTION Contributions from 61Ni(N,X)60Co-m were subtracted 2282000800011 based on independent measurements with a sample 2282000800012 enriched in 61Ni. 2282000800013 COMMENT This reaction cross section was determined by directly 2282000800014 measuring the 58.603-KeV gamma rays from the isomeric 2282000800015 decay of Ni-60m. Contributions of 28-Ni-61(N,X)27Co-60m2282000800016 were subtracted based on independent measurements with 2282000800017 a sample enriched in Ni-61. 2282000800018 STATUS .From table 1 of main reference 2282000800019 (COREL,22684008) 2282000800020 ENDBIB 18 0 2282000800021 NOCOMMON 0 0 2282000800022 DATA 4 4 2282000800023 EN EN-RSL-FW DATA ERR-T 2282000800024 MEV MEV MB MB 2282000800025 15.27 0.16 64. 7. 2282000800026 16.26 0.20 46. 4. 2282000800027 17.98 0.06 27. 3. 2282000800028 19.29 0.09 20. 3. 2282000800029 ENDDATA 6 0 2282000800030 ENDSUBENT 29 0 2282000899999 SUBENT 22820009 20040113 00002282000900001 BIB 6 18 2282000900002 REACTION (28-NI-61(N,X)27-CO-60-M,,SIG) 2282000900003 DECAY-DATA (27-CO-60-M,10.467MIN,DG,58.603,0.020359) 2282000900004 SAMPLE .Natural nickel metal samples of 99.995% purity, 2282000900005 13 mm diam, 0.1 mm thick. Isotopic abundance - 2282000900006 58Ni - 68.077%, 60Ni - 22.223%, 61Ni - 1.14%, 2282000900007 62Ni - 3.63%, 64Ni - 0.926% 2282000900008 .To distinguish between activitiy produced by 2282000900009 62Ni(N,N'P) reaction sample enriched by 61Ni was used.2282000900010 This latter is in powder form having weight 50 milli- 2282000900011 gram placed in aluminium container 13 mm diameter. 2282000900012 Isotopic abundance - 58Ni - 2%, 60Ni - 9.89%, 2282000900013 61Ni - 86.2%, 62Ni - 1.81%, 64Ni - 0.1% 2282000900014 MONITOR .Usually determined relative to the 27Al(N,alpha)24Na 2282000900015 standard. 2282000900016 CORRECTION .Contributions from 62Ni(N,N+P)61Co were subtracted 2282000900017 based on independent measurements with a sample 2282000900018 enriched in 61Ni. 2282000900019 STATUS .From table 1 of main reference, table 6 reference 2 2282000900020 ENDBIB 18 0 2282000900021 NOCOMMON 0 0 2282000900022 DATA 4 1 2282000900023 EN EN-RSL-FW DATA ERR-T 2282000900024 MEV MEV MB MB 2282000900025 19.29 0.09 65. 6. 2282000900026 ENDDATA 3 0 2282000900027 ENDSUBENT 26 0 2282000999999 SUBENT 22820010 20040113 00002282001000001 BIB 6 18 2282001000002 REACTION (28-NI-61(N,P)27-CO-61,,SIG) 2282001000003 DECAY-DATA (27-CO-61,1.65HR,DG,67.4,0.847) 2282001000004 SAMPLE .Natural nickel metal samples of 99.995% purity, 2282001000005 13 mm diam, 0.1 mm thick. Isotopic abundance - 2282001000006 58Ni - 68.077%, 60Ni - 22.223%, 61Ni - 1.14%, 2282001000007 62Ni - 3.63%, 64Ni - 0.926% 2282001000008 .To distinguish between activitiy produced by 2282001000009 62Ni(N,N'P) reaction sample enriched by 61Ni was used.2282001000010 This latter is in powder form having weight 50 milli- 2282001000011 gram placed in aluminium container 13 mm diameter. 2282001000012 Isotopic abundance - 58Ni - 2%, 60Ni - 9.89%, 2282001000013 61Ni - 86.2%, 62Ni - 1.81%, 64Ni - 0.1% 2282001000014 MONITOR .Usually determined relative to the 27Al(N,alpha)24Na 2282001000015 standard. 2282001000016 CORRECTION .Contributions from 62Ni(N,N+P)61Co were subtracted 2282001000017 based on independent measurements with a sample 2282001000018 enriched in 61Ni. 2282001000019 STATUS .From table 1 of main reference, table 6 reference 2 2282001000020 ENDBIB 18 0 2282001000021 NOCOMMON 0 0 2282001000022 DATA 4 5 2282001000023 EN EN-RSL-FW DATA ERR-T 2282001000024 MEV MEV MB MB 2282001000025 14.81 0.17 74. 7. 2282001000026 15.27 0.16 65. 6. 2282001000027 16.26 0.2 56. 5. 2282001000028 18.04 0.12 47. 3. 2282001000029 19.04 0.07 39. 4. 2282001000030 ENDDATA 7 0 2282001000031 ENDSUBENT 30 0 2282001099999 SUBENT 22820011 20040113 00002282001100001 BIB 6 11 2282001100002 REACTION (28-NI-62(N,X)27-CO-61,,SIG) 2282001100003 DECAY-DATA (27-CO-61,1.65HR,DG,67.4,0.847) 2282001100004 MONITOR Usually determined relative to the 27Al(N,alpha)24Na 2282001100005 standard. 2282001100006 SAMPLE .Natural nickel metal samples of 99.995% purity, 2282001100007 13 mm diam, 0.1 mm thick. Isotopic abundance - 2282001100008 58Ni - 68.077%, 60Ni - 22.223%, 61Ni - 1.14%, 2282001100009 62Ni - 3.63%, 64Ni - 0.926% 2282001100010 ANALYSIS Cross sections obtained by allowing for complete decay 2282001100011 of the isomeric state to ground state. 2282001100012 STATUS .From table 1 main reference 2282001100013 ENDBIB 11 0 2282001100014 NOCOMMON 0 0 2282001100015 DATA 4 4 2282001100016 EN EN-RSL-FW DATA ERR-T 2282001100017 MEV MEV MB MB 2282001100018 15.27 0.16 4.6 3. 2282001100019 16.26 0.20 9.2 3. 2282001100020 18.04 0.12 48. 7. 2282001100021 19.04 0.07 67. 9. 2282001100022 ENDDATA 6 0 2282001100023 ENDSUBENT 22 0 2282001199999 SUBENT 22820012 20040113 00002282001200001 BIB 5 13 2282001200002 REACTION (27-CO-59(N,2N)27-CO-58,,SIG) Sum of GND and MS 2282001200003 DECAY-DATA (27-CO-58,70.86D,DG,810.759,0.9945) 2282001200004 (27-CO-58-M,9.04HR,DG) 2282001200005 SAMPLE .Natural metallic foil 99.99% purity punched as disks 2282001200006 20 mm diam and 5 mm thick 2282001200007 COMMENT .These cross sections were obtained by first allowing 2282001200008 for all nuclei residing in the isomeric state at 2282001200009 24.889-KeV excitation in Co-58 to decay to the ground 2282001200010 state. The cross section values refer to the total 2282001200011 (N,2N) cross section for formation of the isomer plus 2282001200012 the ground state of Co-58. 2282001200013 STATUS .From table 1 of main reference 2282001200014 (COREL,22684009) 2282001200015 ENDBIB 13 0 2282001200016 NOCOMMON 0 0 2282001200017 DATA 4 13 2282001200018 EN EN-RSL-FW DATA ERR-T 2282001200019 MEV MEV MB MB 2282001200020 13.32 0.25 614. 36. 2282001200021 14.81 0.17 770. 26. 2282001200022 15.27 0.16 787. 44. 2282001200023 15.56 0.19 841. 30. 2282001200024 15.68 0.18 800. 28. 2282001200025 16.26 0.20 808. 31. 2282001200026 17.03 0.17 853. 33. 2282001200027 17.98 0.06 869. 45. 2282001200028 18.04 0.12 887. 54. 2282001200029 18.36 0.15 889. 70. 2282001200030 19.28 0.09 910. 47. 2282001200031 19.94 0.09 915. 45. 2282001200032 20.35 0.08 900. 50. 2282001200033 ENDDATA 15 0 2282001200034 ENDSUBENT 33 0 2282001299999 SUBENT 22820013 20040113 00002282001300001 BIB 5 10 2282001300002 REACTION (27-CO-59(N,2N)27-CO-58-M,,SIG) 2282001300003 DECAY-DATA (27-CO-58-M,9.04HR,DG) 2282001300004 SAMPLE .Natural metallic foil 99.99% purity punched as disks 2282001300005 20 mm diam and 5 mm thick 2282001300006 COMMENT These cross sections were derived from measured total 2282001300007 Co-59(N,2N) cross sections and the measured isomer 2282001300008 cross-section ratio for producing Co-58m to that for 2282001300009 producing all Co-58 nuclei by this reaction. 2282001300010 STATUS .From table 1 of main reference 2282001300011 (COREL,22684010) 2282001300012 ENDBIB 10 0 2282001300013 NOCOMMON 0 0 2282001300014 DATA 4 5 2282001300015 EN EN-RSL-FW DATA ERR-T 2282001300016 MEV MEV MB MB 2282001300017 15.27 0.16 535. 56. 2282001300018 15.56 0.19 555. 50. 2282001300019 17.03 0.17 580. 61. 2282001300020 17.98 0.06 564. 64. 2282001300021 19.28 0.09 628. 60. 2282001300022 ENDDATA 7 0 2282001300023 ENDSUBENT 22 0 2282001399999 SUBENT 22820014 20040113 00002282001400001 BIB 5 10 2282001400002 REACTION (27-CO-59(N,2N)27-CO-58-M/T,,SIG/RAT) 2282001400003 DECAY-DATA (27-CO-58-G,70.86D,DG,810.759,0.9945) 2282001400004 (27-CO-58-M,9.04HR,DG) 2282001400005 COMMENT These cross section isomer ratios were determined by 2282001400006 measuring the decay curve for the 70.86-day Co-58 2282001400007 ground-state activity. 2282001400008 SAMPLE .Natural metallic foil 99.99% purity punched as disks 2282001400009 20 mm diam and 5 mm thick 2282001400010 STATUS .From table 1 of main reference 2282001400011 (COREL,22684011) 2282001400012 ENDBIB 10 0 2282001400013 NOCOMMON 0 0 2282001400014 DATA 4 5 2282001400015 EN EN-RSL-FW DATA ERR-T 2282001400016 MEV MEV NO-DIM NO-DIM 2282001400017 15.27 0.16 0.68 0.06 2282001400018 15.56 0.19 0.66 0.05 2282001400019 17.03 0.17 0.68 0.06 2282001400020 17.98 0.06 0.65 0.06 2282001400021 19.28 0.09 0.69 0.05 2282001400022 ENDDATA 7 0 2282001400023 ENDSUBENT 22 0 2282001499999 ENDENTRY 14 0 2282099999999