ENTRY 21290 20080729 22042129000000001 SUBENT 21290001 20080729 22042129000100001 BIB 10 27 2129000100002 INSTITUTE (2ITYFIR) Experiment done.University,Firenze. P.Sona. 2129000100003 (2ITYITY) University, Pisa. G.Curzio. 2129000100004 REFERENCE (J,NC/B,54,(2),319,196804) 2129000100005 AUTHOR (G.Curzio, P.Sona) 2129000100006 TITLE -Isomeric (n,2n) Cross-Section Ratios and Spin Cut-off 2129000100007 Parameter Calculations.- 2129000100008 FACILITY (VDG,2ITYFIR) 400 keV Van De Graaff accelerator. 2129000100009 INC-SOURCE (D-T) Deuteron-tritium reaction T(d,n)He-4 . 2129000100010 METHOD (ACTIV) Activation analysis. Experimental values of 2129000100011 this work and those available from literature have 2129000100012 been analyzed by the Huizenga-Vandenbosch formula and 2129000100013 the spin cutoff parameters have been determined. 2129000100014 DETECTOR (NAICR) Sodium-Iodide Crystal NaI(TL) scintillation 2129000100015 counter of 3inch x 3 inch size, coupled to 512-channel 2129000100016 pulse-height analyzer. . 2129000100017 (SCIN) Organic scintillation counter for neutron flux 2129000100018 monitoring. 2129000100019 STATUS (NDD) Data taken from NEUDADA. 2129000100020 HISTORY (19800124T) G.C. 2129000100021 (19800129E) 2129000100022 (20080730U) M.M. BIB information was added. 2129000100023 Free text was corrected to be "human-readable". 2129000100024 Dates were corrected for 4-digits year. 2129000100025 REACTION codes for isomer ratios were corrected in 2129000100026 according to present rules - Subents 003,005,007,009 . 2129000100027 COMMENT was added. Data of Subents 002,004,006,008 were2129000100028 restored. 2129000100029 ENDBIB 27 0 2129000100030 NOCOMMON 0 0 2129000100031 ENDSUBENT 30 0 2129000199999 SUBENT 21290002 20080729 22042129000200001 BIB 5 9 2129000200002 REACTION (35-BR-80(0,0),,SCO) 2129000200003 STATUS (TABLE) Table II of reference. 2129000200004 (DEP,21290003) 2129000200005 ANALYSIS Spin cut-off parameter was calculated by 2129000200006 Huizenga-Vandebosch method and exp. value of isomeric 2129000200007 ratio. 2129000200008 ERR-ANALYS (DATA-ERR) Error directly deduced from exp. error on 2129000200009 isomeric cross-section ratio. 2129000200010 HISTORY (20080729S) DATA were restored. 2129000200011 ENDBIB 9 0 2129000200012 NOCOMMON 0 0 2129000200013 DATA 2 1 2129000200014 DATA DATA-ERR 2129000200015 NO-DIM NO-DIM 2129000200016 5.4 0.3 2129000200017 ENDDATA 3 0 2129000200018 ENDSUBENT 17 0 2129000299999 SUBENT 21290003 20080729 22042129000300001 BIB 8 16 2129000300002 REACTION (35-BR-81(N,2N)35-BR-80-M/T,,SIG/RAT) Ratio of cross 2129000300003 section for production of high spin isomer to total 2129000300004 n,2n cross section. 2129000300005 SAMPLE LiBr anhydrous powder. 2129000300006 RAD-DET (35-BR-80,DG) 620 keV line of Kr-80 after b- decay 2129000300007 in Br-80g. 2129000300008 DECAY-DATA (35-BR-80-G,18.MIN,DG,620.) Spin 1. 2129000300009 (35-BR-80-M,4.5HR) Spin 5. 2129000300010 (35-BR-78,6.33MIN) 2129000300011 ANALYSIS (DECAY) Isomeric cross-section ratio was deduced from 2129000300012 decay of 620 keV line in Kr-80. 2129000300013 Two components of decay curve (half-lives 4.5 h and 2129000300014 18 m) were clearly separated. 2129000300015 CORRECTION Competing activity from Br-78 was subtracted. 2129000300016 ERR-ANALYS (DATA-ERR) No details given. 2129000300017 STATUS (TABLE) Tables I and II of reference. 2129000300018 ENDBIB 16 0 2129000300019 NOCOMMON 0 0 2129000300020 DATA 3 1 2129000300021 EN DATA DATA-ERR 2129000300022 MEV NO-DIM NO-DIM 2129000300023 1.4900E+01 6.2000E-01 2.0000E-02 2129000300024 ENDDATA 3 0 2129000300025 ENDSUBENT 24 0 2129000399999 SUBENT 21290004 20080729 22042129000400001 BIB 5 9 2129000400002 REACTION (42-MO-91(0,0),,SCO) 2129000400003 STATUS (TABLE) Table II of reference. 2129000400004 (DEP,21290005) 2129000400005 ANALYSIS Spin cut-off parameter was calculated by 2129000400006 Huizenga-Vandebosch method and exp. value of isomeric 2129000400007 ratio. 2129000400008 ERR-ANALYS (DATA-ERR) Error directly deduced from exp. error on 2129000400009 isomeric cross-section ratio. 2129000400010 HISTORY (20080729S) DATA were restored. 2129000400011 ENDBIB 9 0 2129000400012 NOCOMMON 0 0 2129000400013 DATA 2 1 2129000400014 DATA DATA-ERR 2129000400015 NO-DIM NO-DIM 2129000400016 3.5 0.4 2129000400017 ENDDATA 3 0 2129000400018 ENDSUBENT 17 0 2129000499999 SUBENT 21290005 20080729 22042129000500001 BIB 9 24 2129000500002 REACTION (42-MO-92(N,2N)42-MO-91-G/T,,SIG/RAT) Ratio of cross 2129000500003 section for production of high spin isomer to total 2129000500004 n,2n cross section. 2129000500005 SAMPLE Natural metallic sheet. 2129000500006 PART-DET (AR) Annihilation radiation 511 keV. 2129000500007 DECAY-DATA (42-MO-91-M,66.SEC,DG,658.,,AR,511.) 2129000500008 658keV isomeric transition and 511.keV annihilation 2129000500009 radiation. Mo-91m spin 1.5, Mo-91g spin 4.5 . 2129000500010 (42-MO-91-G,,AR,511.) 2129000500011 (42-MO-99,65.HR) 2129000500012 (41-NB-96,20.HR) 2129000500013 (41-NB-97,1.2HR) 2129000500014 (42-MO-101,14.5MIN) 2129000500015 ADD-RES (COMP)The isomeric cross-section ratio and spin cut-off2129000500016 were calculated from the spin distribution resulting 2129000500017 after the emission of 1-st neutron since the excitation2129000500018 energy after emission of 2-nd neutron was too low for 2129000500019 the statistical model to be applicable. 2129000500020 CORRECTION It was necessary to subtract the disturbing 2129000500021 activities of Mo-99,Nb-96, Nb-97, Mo-101. 2129000500022 REL-REF (N,,T.Cretzu+,J,ADP,16,312,1963) Relevant data for 2129000500023 cross section ratio calculation. 2129000500024 ERR-ANALYS (DATA-ERR) No details given. 2129000500025 STATUS (TABLE) Tables I and II of reference. 2129000500026 ENDBIB 24 0 2129000500027 NOCOMMON 0 0 2129000500028 DATA 3 1 2129000500029 EN DATA DATA-ERR 2129000500030 MEV NO-DIM NO-DIM 2129000500031 1.4900E+01 8.2000E-01 1.0000E-02 2129000500032 ENDDATA 3 0 2129000500033 ENDSUBENT 32 0 2129000599999 SUBENT 21290006 20080729 22042129000600001 BIB 4 7 2129000600002 REACTION (49-IN-112(0,0),,SCO) 2129000600003 STATUS (TABLE) Table II of reference. 2129000600004 (DEP,21290007) 2129000600005 ANALYSIS Spin cut-off parameter was calculated by 2129000600006 Huizenga-Vandebosch method and exp. value of isomeric 2129000600007 ratio. 2129000600008 HISTORY (20080729S) DATA were restored. 2129000600009 ENDBIB 7 0 2129000600010 NOCOMMON 0 0 2129000600011 DATA 1 1 2129000600012 DATA-MIN 2129000600013 NO-DIM 2129000600014 6.0 2129000600015 ENDDATA 3 0 2129000600016 ENDSUBENT 15 0 2129000699999 SUBENT 21290007 20080729 22042129000700001 BIB 8 17 2129000700002 REACTION (49-IN-113(N,2N)49-IN-112-M/T,,SIG/RAT) Ratio of cross 2129000700003 section for production of high spin isomer to total 2129000700004 n,2n cross section. 2129000700005 SAMPLE Indium natural samples in metallic form. 2129000700006 RAD-DET (49-IN-112-G,AR) Annihilation radiation. 2129000700007 DECAY-DATA (49-IN-112-G,10.8MIN,AR,511.)) Spin=1. 2129000700008 (49-IN-112-M,21.MIN) Spin=4. 2129000700009 (49-IN-116-M1,52.MIN) 2129000700010 (49-IN-113-M,4.5HR) 2129000700011 (49-IN-114-M,50.D) 2129000700012 ANALYSIS (DECAY) Isomeric ratio was deduced from the decay curve2129000700013 of annihilation radiation,which presented two 2129000700014 components with half-lives 21 m and 10.8 m. 2129000700015 CORRECTION Gamma spectra were corrected for the presence of gamma2129000700016 rays from In-116, In-113m,In-114m. 2129000700017 ERR-ANALYS (DATA-ERR) No details given. 2129000700018 STATUS (TABLE) Tables I and II of reference. 2129000700019 ENDBIB 17 0 2129000700020 NOCOMMON 0 0 2129000700021 DATA 3 1 2129000700022 EN DATA DATA-ERR 2129000700023 MEV NO-DIM NO-DIM 2129000700024 1.4000E+01 9.3000E-01 1.5000E-02 2129000700025 ENDDATA 3 0 2129000700026 ENDSUBENT 25 0 2129000799999 SUBENT 21290008 20080729 22042129000800001 BIB 5 9 2129000800002 REACTION (62-SM-143(0,0),,SCO) 2129000800003 STATUS (TABLE) Table II of reference. 2129000800004 (DEP,21290009) 2129000800005 ANALYSIS Spin cut-off parameter was calculated by 2129000800006 Huizenga-Vandebosch method and exp. value of isomeric 2129000800007 ratio. 2129000800008 ERR-ANALYS (DATA-ERR) Error directly deduced from exp. error on 2129000800009 isomeric cross-section ratio. 2129000800010 HISTORY (20080729S) DATA were restored. 2129000800011 ENDBIB 9 0 2129000800012 NOCOMMON 0 0 2129000800013 DATA 2 1 2129000800014 DATA DATA-ERR 2129000800015 NO-DIM NO-DIM 2129000800016 4.4 0.2 2129000800017 ENDDATA 3 0 2129000800018 ENDSUBENT 17 0 2129000899999 SUBENT 21290009 20080729 22042129000900001 BIB 6 11 2129000900002 REACTION (62-SM-144(N,2N)62-SM-143-M/T,,SIG/RAT) Ratio of cross 2129000900003 section for production of high spin isomer to total 2129000900004 n,2n cross section. 2129000900005 SAMPLE Enriched target. Enrichment in Sm-144 94.% . 2129000900006 DECAY-DATA (62-SM-143-M,63.SEC,DG,753.) Isomeric transition. 2129000900007 (62-SM-143-G,8.9MIN,AR) 2129000900008 Sm-143g spin=1.5, SM-143m spin=5.5 . 2129000900009 CORRECTION No correction for competing activities was found 2129000900010 necessary. 2129000900011 ERR-ANALYS (DATA-ERR) No details given. 2129000900012 STATUS (TABLE) Tables I and II of reference . 2129000900013 ENDBIB 11 0 2129000900014 NOCOMMON 0 0 2129000900015 DATA 3 1 2129000900016 EN DATA DATA-ERR 2129000900017 MEV NO-DIM NO-DIM 2129000900018 1.4900E+01 5.2000E-01 3.0000E-02 2129000900019 ENDDATA 3 0 2129000900020 ENDSUBENT 19 0 2129000999999 ENDENTRY 9 0 2129099999999