ENTRY 32737 20161109 31773273700000001 SUBENT 32737001 20161109 31773273700100001 BIB 14 43 3273700100002 TITLE Cross sections of the 56Fe(n,a)53Cr and 54Fe(n,a)51Cr 3273700100003 reactions in the MeV region 3273700100004 AUTHOR (Zhimin Wang, Xiao Fan, Luyu Zhang, Huaiyong Bai, 3273700100005 Jinxiang Chen, Guohui Zhang, Yu.M.Gledenov, 3273700100006 M.V.Sedysheva, L.Krupa, G.Khuukhenkhuu) 3273700100007 INSTITUTE (3CPRBJG,4ZZZDUB,3CZRCTI,3MGLNUM) 3273700100008 REFERENCE (J,PR/C,92,044601,2015) 3273700100009 #doi:10.1103/PhysRevC.92.044601 3273700100010 (S,ISINN-23,334,2016) Same data given. 3273700100011 FACILITY (VDG,3CPRBJG) 4.5-MV Van de Graaff accelerator. 3273700100012 INC-SOURCE (D-D) Neutrons were produced through the 2H(d,n)3He 3273700100013 reaction by using a deuterium gas target. The 3273700100014 monoenergetic neutron energy was changed by adjusting 3273700100015 the deuteron beam energy. The deuteron beam current 3273700100016 was about 3.0 mu-A during measurements. 3273700100017 DETECTOR (BF3) A BF3 long counter as a neutron flux monitor. 3273700100018 (IOCH) Using a double-section gridded ionization 3273700100019 chamber (GIC) as the alpha-particle detector, with a 3273700100020 common cathode. The distance from the cathode to the 3273700100021 grid was 61 mm, and that from the grid to the anode 3273700100022 was 15 mm. The working gas of the GIC was a mixture 3273700100023 gas of krypton with about 3% carbon dioxide. 3273700100024 PART-DET (A) Alpha particles 3273700100025 METHOD (FLUX) The neutron flux was monitored by a BF3 long 3273700100026 counter. The absolute neutron flux at the sample 3273700100027 position was determined by the fission counts from 3273700100028 the 238U(n,f) reaction. 3273700100029 MONITOR (92-U-238(N,F),,SIG) 3273700100030 Sample material was 238U3O8, the abundance of the 238U 3273700100031 sample was 99.999%. The thickness and diameter of the 3273700100032 238U sample were 493.6 mu-g/cm2(238U only) and 45.0 mm.3273700100033 MONIT-REF (,,3,ENDF/B-VII.1,9237,2014) 3273700100034 ERR-ANALYS (ERR-T) The major uncertainty of the cross sections 3273700100035 including the statistics and background subtraction. 3273700100036 (ERR-1) Detection efficiency for alpha particles. 3273700100037 (ERR-2) 238U fission counts. 3273700100038 (ERR-3) Normalization of the BF3 counts. 3273700100039 (ERR-4) Numbers of the 56Fe or 54Fe nucleus. 3273700100040 (ERR-5) Numbers of the 238U nucleus. 3273700100041 (MONIT-ERR) 238U fission cross section. 3273700100042 STATUS (TABLE) Data taken from Table III at page 044601-5 in 3273700100043 J,PR/C,92,044601,2015. 3273700100044 HISTORY (20161109C) Compiled by Jimin WANG(CNDC). 3273700100045 ENDBIB 43 0 3273700100046 COMMON 6 3 3273700100047 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 MONIT-ERR 3273700100048 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3273700100049 5.0 3.0 1.5 1.0 1.3 1.03273700100050 ENDCOMMON 3 0 3273700100051 ENDSUBENT 50 0 3273700199999 SUBENT 32737002 20161109 31773273700200001 BIB 3 4 3273700200002 REACTION (26-FE-56(N,A)24-CR-53,,SIG) 3273700200003 SAMPLE (26-FE-56,NAT=0.91754) Natural sample. 44.0 /48.0 mm 3273700200004 diam. and 735 / 691 ug/cm2 thick (forward/backward) 3273700200005 ERR-ANALYS (ERR-S,12.,20.) alpha counting 3273700200006 ENDBIB 4 0 3273700200007 NOCOMMON 0 0 3273700200008 DATA 4 1 3273700200009 EN EN-RSL DATA ERR-T 3273700200010 MEV MEV MB MB 3273700200011 6.5 0.10 4.57 0.52 3273700200012 ENDDATA 3 0 3273700200013 ENDSUBENT 12 0 3273700299999 SUBENT 32737003 20161109 31773273700300001 BIB 3 4 3273700300002 REACTION (26-FE-56(N,A)24-CR-53,,SIG) 3273700300003 SAMPLE (26-FE-56,ENR=0.9994) Enriched sample. 43.5 / 44.0 mm 3273700300004 diam. and 584 / 540 ug/cm2 thick (forward/backward) 3273700300005 ERR-ANALYS (ERR-S,12.,20.) alpha counting 3273700300006 ENDBIB 4 0 3273700300007 NOCOMMON 0 0 3273700300008 DATA 4 2 3273700300009 EN EN-RSL DATA ERR-T 3273700300010 MEV MEV MB MB 3273700300011 5.5 0.14 1.05 0.23 3273700300012 6.5 0.10 5.88 0.79 3273700300013 ENDDATA 4 0 3273700300014 ENDSUBENT 13 0 3273700399999 SUBENT 32737004 20161109 31773273700400001 BIB 3 5 3273700400002 REACTION (26-FE-56(N,A)24-CR-53,,SIG,,AV) 3273700400003 ANALYSIS Averaged over the data from natural and enriched 3273700400004 samples 3273700400005 STATUS (DEP,32737002) Data from natural sample 3273700400006 (DEP,32737003) Data from enriched sample 3273700400007 ENDBIB 5 0 3273700400008 NOCOMMON 0 0 3273700400009 DATA 4 1 3273700400010 EN EN-RSL DATA ERR-T 3273700400011 MEV MEV MB MB 3273700400012 6.5 0.10 5.23 0.47 3273700400013 ENDDATA 3 0 3273700400014 ENDSUBENT 13 0 3273700499999 SUBENT 32737005 20161109 31773273700500001 BIB 3 4 3273700500002 REACTION (26-FE-54(N,A)24-CR-51,,SIG) 3273700500003 SAMPLE (26-FE-54,NAT=0.05845) Natural sample. 44.0 /48.0 mm 3273700500004 thick and 735 / 691 ug/cm2 (forward/backward) 3273700500005 ERR-ANALYS (ERR-S,8.,30.) alpha counting 3273700500006 ENDBIB 4 0 3273700500007 NOCOMMON 0 0 3273700500008 DATA 4 2 3273700500009 EN EN-RSL DATA ERR-T 3273700500010 MEV MEV MB MB 3273700500011 5.5 0.14 3.21 0.38 3273700500012 6.5 0.10 12.86 1.13 3273700500013 ENDDATA 4 0 3273700500014 ENDSUBENT 13 0 3273700599999 SUBENT 32737006 20161109 31773273700600001 BIB 4 5 3273700600002 REACTION (26-FE-54(N,A)24-CR-51,,SIG) 3273700600003 SAMPLE (26-FE-54,ENR=0.9987) Enriched sample. 43.0 / 46.0 mm 3273700600004 thick and 555 / 557 ug/cm2 (forward/backward) 3273700600005 ERR-ANALYS (ERR-S,8.,30.) alpha counting 3273700600006 COMMENT Results measured in the second round of the experiment.3273700600007 ENDBIB 5 0 3273700600008 NOCOMMON 0 0 3273700600009 DATA 4 3 3273700600010 EN EN-RSL DATA ERR-T 3273700600011 MEV MEV MB MB 3273700600012 4.0 0.21 0.76 0.25 3273700600013 4.5 0.19 0.36 0.17 3273700600014 5.5 0.14 3.25 0.43 3273700600015 ENDDATA 5 0 3273700600016 ENDSUBENT 15 0 3273700699999 SUBENT 32737007 20161109 31773273700700001 BIB 3 4 3273700700002 REACTION (26-FE-54(N,A)24-CR-51,,SIG,,AV) 3273700700003 ANALYSIS Averaged over data from natural and enriched samples 3273700700004 STATUS (DEP,32737005) Data from natural sample 3273700700005 (DEP,32737006) Data from enriched sample 3273700700006 ENDBIB 4 0 3273700700007 NOCOMMON 0 0 3273700700008 DATA 4 1 3273700700009 EN EN-RSL DATA ERR-T 3273700700010 MEV MEV MB MB 3273700700011 5.5 0.14 3.23 0.29 3273700700012 ENDDATA 3 0 3273700700013 ENDSUBENT 12 0 3273700799999 ENDENTRY 7 0 3273799999999