ENTRY 30811 20090910 31413081100000001 SUBENT 30811001 20090910 31413081100100001 BIB 16 63 3081100100002 TITLE Neutron activation cross section for Ni isotopes 3081100100003 at 14.8 MeV 3081100100004 AUTHOR (I.Ribansky,J.Kristiak,L.Stoeva,C.Panteleev) 3081100100005 INSTITUTE (3SLKSLO) First and second authors 3081100100006 (3BULBLA) Third and fourth authors 3081100100007 REFERENCE (J,CZJ/B,35,1128,1985) 3081100100008 (R,INDC(CSR)-7,198507) Same data 3081100100009 (R,INDC(CSR)-8,198603) Same data for Ni 3081100100010 SAMPLE Samples of different isotopic composition were used 3081100100011 (see 'METHOD'). The samples were prepared by pressing 3081100100012 NiO or pure metal powder into plexiglass containers 3081100100013 of diameter 16 mm. Sample thickness varied from 250 to 3081100100014 600 mg/cm2. The isotopic abundances are: 3081100100015 --------------------------------------------- 3081100100016 Sample Isotope 3081100100017 58 60 61 62 64 3081100100018 --------------------------------------------- 3081100100019 natural 68.27 26.10 1.13 3.59 0.91 3081100100020 Ni-58 99.8 0.2 0.05 0.04 0.19 3081100100021 Ni-60 0.08 99.9 0.01 0.01 0.01 3081100100022 Ni-61 9.2 20.7 66.6 2.9 0.6 3081100100023 Ni-64 3.64 2.06 0.25 0.95 93.1 3081100100024 --------------------------------------------- 3081100100025 METHOD (ACTIV) In order to resolve (n,p) and (n,np) cross 3081100100026 sections leading to the same activation product, 3081100100027 samples with different isotopic abundances were used 3081100100028 and the contributing cross-sections were deduced 3081100100029 using a linear least squares method. 3081100100030 PART-DET (DG) 3081100100031 DETECTOR (GELI) Resolution 2.5 keV at 1332 keV 3081100100032 MONITOR (26-FE-56(N,P)25-MN-56,,SIG) 3081100100033 MONIT-REF (20772003,T.B.RYVES+,J,MET,14,127,197806) 3081100100034 FACILITY (CCW,3CSRSLO) 3081100100035 INC-SOURCE (D-T) 3081100100036 CORRECTION Data corrected for 3081100100037 -time variation of neutron flux 3081100100038 -coincidence summing of gamma rays 3081100100039 -self absorption of gamma rays in the sample 3081100100040 ERR-ANALYS (ERR-T) Total one-sigma error,includes the 3081100100041 following sources of uncertainties (in %): 3081100100042 (ERR-S,0.5,6.)Counting statistics 0.5 - 6.%3081100100043 (ERR-1) Sample mass 0.1%3081100100044 (ERR-2) Isotopic abundances 0.2%3081100100045 (ERR-3,0.3,2.2) Gamma-ray intensities 0.3 - 2.2%3081100100046 (ERR-4) Detector Efficiency 1.5%3081100100047 (ERR-5,0.3,3.0) Reaction product half-life 0.3 - 3.0%3081100100048 (ERR-6) Irradiation counting geometry(position) 0.2%3081100100049 (ERR-7) Coincidence summing corrections 0.7%3081100100050 (ERR-8) Gamma-ray selfabsorption 0.5%3081100100051 (ERR-9) Monitor calibration (including 3081100100052 Fe-56(n,p) reference reaction) 2.8%3081100100053 STATUS (TABLE) Data taken from INDC(CSR)-7,1985 Tab.3. 3081100100054 Work performed under IAEA Research Agreement 3436/CF 3081100100055 and Interregional Project INT/1/018. 3081100100056 HISTORY (19850604C) DG.- 3081100100057 (19851213U) DG.-New reference .- 3081100100058 (19880516U) DG.-Reference J,CZJ/B,35,1128,85 and 3081100100059 R,INDC(CSR)-8,8603 added.- 3081100100060 (20090725A) SD:Updated to new date formats,lower case. 3081100100061 Cosmetic changes, codes for partial uncertainties and 3081100100062 data to COMMON section are added. 3081100100063 OS. Changed sequence of references 3081100100064 Subentries 2,4 and 6 split, new subentries 7-10 added 3081100100065 ENDBIB 63 0 3081100100066 COMMON 11 6 3081100100067 EN EN-RSL MONIT MONIT-ERR ERR-1 ERR-2 3081100100068 ERR-4 ERR-6 ERR-7 ERR-8 ERR-9 3081100100069 MEV MEV MB MB PER-CENT PER-CENT 3081100100070 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3081100100071 14.8 0.25 106.4 1.1 0.1 0.2 3081100100072 1.5 0.2 0.7 0.5 2.8 3081100100073 ENDCOMMON 6 0 3081100100074 ENDSUBENT 73 0 3081100199999 SUBENT 30811002 20090910 31413081100200001 BIB 5 8 3081100200002 REACTION (28-NI-58(N,2N)28-NI-57,,SIG) 3081100200003 DECAY-DATA (28-NI-57,36.08HR,DG,127.2,0.129,DG,1377.6,0.779) 3081100200004 STATUS (COREL,30811007) 3081100200005 COVARIANCE Ni-58(n,2n)Ni-57 and Ni-58(n,np)Co-57 are correlated 3081100200006 (Co-57 - decay product of Ni-57 via B+) 3081100200007 See subentry 7 3081100200008 The correlation coefficient is -28% 3081100200009 HISTORY (20090910A) OS. Subentry split, (n,np) moved to sub.7 3081100200010 ENDBIB 8 0 3081100200011 NOCOMMON 0 0 3081100200012 DATA 2 1 3081100200013 DATA ERR-T 3081100200014 MB PER-CENT 3081100200015 3.2600E+01 8.6000E+00 3081100200016 ENDDATA 3 0 3081100200017 ENDSUBENT 16 0 3081100299999 SUBENT 30811003 20090910 31413081100300001 BIB 4 11 3081100300002 REACTION M(28-NI-58(N,P)27-CO-58-M,,SIG) 3081100300003 G(28-NI-58(N,P)27-CO-58-G,,SIG) 3081100300004 S(28-NI-58(N,P)27-CO-58,,SIG) Deduced 3081100300005 (sum of metastable + ground state) 3081100300006 DECAY-DATA (27-CO-58-M,9.15HR,DG,24.9,1.00) 3081100300007 (27-CO-58-G,70.80D,DG,810.8,0.994) 3081100300008 COVARIANCE Ni-58(n,p)Co-58-m and Ni-58(n,p)Co-58-g are correlated 3081100300009 (measured cross sections were determined by analysing3081100300010 the decay curve of the 810.8 keV gamma-transition) 3081100300011 The correlation coefficient is -29%. 3081100300012 STATUS S(COREL,30811003) 3081100300013 ENDBIB 11 0 3081100300014 NOCOMMON 0 0 3081100300015 DATA 6 1 3081100300016 DATA MERR-T MDATA GERR-T GDATA SERR-T S3081100300017 MB PER-CENT MB PER-CENT MB PER-CENT 3081100300018 1.3420E+02 4.6000E+00 1.2040E+02 5.7000E+00 2.5460E+02 2.8000E+003081100300019 ENDDATA 3 0 3081100300020 ENDSUBENT 19 0 3081100399999 SUBENT 30811004 20090910 31413081100400001 BIB 5 8 3081100400002 REACTION (28-NI-60(N,P)27-CO-60-M,,SIG) 3081100400003 DECAY-DATA (27-CO-60-M,10.47MIN,DG,58.6,0.0207) 3081100400004 STATUS (COREL,30811008) 3081100400005 COVARIANCE Ni-60(n,p)Co-60-m and Ni-61(n,np)Co-60-m are correlated3081100400006 (same final product Co-60-m), see subentry 8 3081100400007 The correlation coefficient is -49% 3081100400008 HISTORY (20090910A) OS. Subentry split, (n,np) moved to sub.8, 3081100400009 Ni-61(n,p) moved to subentry 9 3081100400010 ENDBIB 8 0 3081100400011 NOCOMMON 0 0 3081100400012 DATA 2 1 3081100400013 DATA ERR-T 3081100400014 MB PER-CENT 3081100400015 5.0100E+01 8.4000E+00 3081100400016 ENDDATA 3 0 3081100400017 ENDSUBENT 16 0 3081100499999 SUBENT 30811005 20090910 31413081100500001 BIB 4 12 3081100500002 REACTION M(28-NI-62(N,P)27-CO-62-M,,SIG) 3081100500003 G(28-NI-62(N,P)27-CO-62-G,,SIG) 3081100500004 S(28-NI-62(N,P)27-CO-62,,SIG) deduced 3081100500005 (sum of metastable + ground state) 3081100500006 DECAY-DATA (27-CO-62-M,13.91MIN,DG,1163.5,0.62,DG,1173.0,0.979) 3081100500007 (27-CO-62-G,1.50MIN,DG,1129.1,0.131,DG,1173.0,0.826) 3081100500008 COVARIANCE Ni-62(n,p)Co-62-m and Ni-62(n,p)Co-62-g are correlated 3081100500009 (measured cross sections were determined by analysing 3081100500010 the decay curves of 1129.1 keV,1163.5 keV and 3081100500011 1173.0 keV gamma-transitions) 3081100500012 The correlation coefficient is -66% 3081100500013 STATUS S(COREL,30811005) 3081100500014 ENDBIB 12 0 3081100500015 NOCOMMON 0 0 3081100500016 DATA 6 1 3081100500017 DATA MERR-T MDATA GERR-T GDATA SERR-T S3081100500018 MB PER-CENT MB PER-CENT MB PER-CENT 3081100500019 1.1700E+01 6.8000E+00 1.7300E+01 6.9000E+00 2.9000E+01 3.1000E+003081100500020 ENDDATA 3 0 3081100500021 ENDSUBENT 20 0 3081100599999 SUBENT 30811006 20090910 31413081100600001 BIB 3 5 3081100600002 REACTION (28-NI-64(N,X)27-CO-63,,SIG) 3081100600003 (n,n'p) + (n,pn) + (n,d) 3081100600004 DECAY-DATA (27-CO-63,27.5SEC,DG,87.1,0.493) 3081100600005 HISTORY (20090910A) OS. Subentry split, (n,a) moved to sub.10. 3081100600006 Reaction changed from (n,n+p) to (N,X) 3081100600007 ENDBIB 5 0 3081100600008 NOCOMMON 0 0 3081100600009 DATA 2 1 3081100600010 DATA ERR-T 3081100600011 MB PER-CENT 3081100600012 8.6000E-01 4.7000E+00 3081100600013 ENDDATA 3 0 3081100600014 ENDSUBENT 13 0 3081100699999 SUBENT 30811007 20090910 31413081100700001 BIB 5 10 3081100700002 REACTION (28-NI-58(N,X)27-CO-57,,SIG) 3081100700003 (n,n'p) + (n,pn) + (n,d) 3081100700004 DECAY-DATA (27-CO-57,271.73D,DG,122.1,0.8568,DG,136.5,0.1067) 3081100700005 STATUS (COREL,30811002) 3081100700006 COVARIANCE Ni-58(n,2n)Ni-57 and Ni-58(n,np)Co-57 are correlated 3081100700007 (Co-57 - decay product of Ni-57 via B+), 3081100700008 see subentry 2. 3081100700009 The correlation coefficient is -28% 3081100700010 HISTORY (20090920C) OS. Data moved from subentry 2. 3081100700011 Reaction changed from (n,n+p) to (N,X) 3081100700012 ENDBIB 10 0 3081100700013 NOCOMMON 0 0 3081100700014 DATA 2 1 3081100700015 DATA ERR-T 3081100700016 MB PER-CENT 3081100700017 4.6700E+02 5.1000E+00 3081100700018 ENDDATA 3 0 3081100700019 ENDSUBENT 18 0 3081100799999 SUBENT 30811008 20090910 31413081100800001 BIB 5 9 3081100800002 REACTION (28-NI-61(N,X)27-CO-60-M,,SIG) 3081100800003 (n,n'p) + (n,pn) + (n,d) 3081100800004 DECAY-DATA (27-CO-60-M,10.47MIN,DG,58.6,0.0207) 3081100800005 STATUS (COREL,30811004) 3081100800006 COVARIANCE Ni-60(n,p)Co-60-m and Ni-61(n,np)Co-60-m are correlated3081100800007 (same final product Co-60-m) 3081100800008 The correlation coefficient is -49% 3081100800009 HISTORY (20090920C) OS. Data moved from subentry 4. 3081100800010 Reaction changed from (n,n+p) to (N,X) 3081100800011 ENDBIB 9 0 3081100800012 NOCOMMON 0 0 3081100800013 DATA 2 1 3081100800014 DATA ERR-T 3081100800015 MB PER-CENT 3081100800016 2.5800E+01 3.6000E+00 3081100800017 ENDDATA 3 0 3081100800018 ENDSUBENT 17 0 3081100899999 SUBENT 30811009 20090910 31413081100900001 BIB 3 3 3081100900002 REACTION (28-NI-61(N,P)27-CO-61,,SIG) 3081100900003 DECAY-DATA (27-CO-61,1.650HR,DG,67.4,0.86) 3081100900004 HISTORY (20090920C) OS. Data moved from subentry 4. 3081100900005 ENDBIB 3 0 3081100900006 NOCOMMON 0 0 3081100900007 DATA 2 1 3081100900008 DATA ERR-T 3081100900009 MB PER-CENT 3081100900010 6.6600E+01 4.7000E+00 3081100900011 ENDDATA 3 0 3081100900012 ENDSUBENT 11 0 3081100999999 SUBENT 30811010 20090910 31413081101000001 BIB 3 3 3081101000002 REACTION (28-NI-64(N,A)26-FE-61,,SIG) 3081101000003 DECAY-DATA (26-FE-61,5.98MIN,DG,1027.4,0.427,DG,1205.1,0.436) 3081101000004 HISTORY (20090920C) OS. Data moved from subentry 6. 3081101000005 ENDBIB 3 0 3081101000006 NOCOMMON 0 0 3081101000007 DATA 2 1 3081101000008 DATA ERR-T 3081101000009 MB PER-CENT 3081101000010 4.2800E+00 3.7000E+00 3081101000011 ENDDATA 3 0 3081101000012 ENDSUBENT 11 0 3081101099999 ENDENTRY 10 0 3081199999999