ENTRY 14240 20090813 13571424000000001 SUBENT 14240001 20090813 13571424000100001 BIB 11 48 1424000100002 TITLE Cross sections for 238U(n,n'g) and 238U(n,2ng) 1424000100003 reactions at incident neutron energies between 1424000100004 5 and 14 MeV 1424000100005 AUTHOR (A.Hutcheson,C.Angell,J.A.Becker,A.S.Crowell, 1424000100006 D.Dashdorj,B.Fallin,N.Fotiades,C.R.Howell,T.Kawano, 1424000100007 J.H.Kelley,E.Kwan,R.A.Macri,H.J.Karwowski,R.O.Nelson, 1424000100008 R.S.Pedroni,A.P.Tonchev,W.Tornow) 1424000100009 INSTITUTE (1USADKE,1USANCS,1USANCA,1USATNL,1USALAS,1USALRL) 1424000100010 (1USAUSA)North Carolina A&T State 1424000100011 University,Greensboro,North Carolina 1424000100012 REFERENCE (J,PR/C,80,014603,2009) 1424000100013 FACILITY (VDGT,1USATNL)The deuteron beam was accelerated by 1424000100014 way of the model FN Tandem Van de Graaff accelerator 1424000100015 SAMPLE The target used for this experiment consisted of a 1424000100016 6.86 g rectangular 238U foil (3.65 x 5.20 x 0.02 cm) 1424000100017 backed by rectangular foils of 99.5% natural iron 1424000100018 with thickness of 0.0038 cm and positioned in the 1424000100019 neutron beam 215 cm downstream from the gas cell. 1424000100020 DETECTOR (HPGE). Gamma rays emitted from the target were 1424000100021 measured using a set of clover and planer HPGe 1424000100022 detectors, each equipped with a bismuth germinate 1424000100023 suppression shield and NaI nose cone. The detectors 1424000100024 were mounted on movable stands that rotated about 1424000100025 the target position in the horizontal plane and 1424000100026 allowed measurements at laboratory angles ranging 1424000100027 from 0. to 140 deg. 1424000100028 METHOD (TOF)Time of flight was used to separate prompt 1424000100029 gamma rays. 1424000100030 INC-SOURCE (D-D)Fast neutrons were produced via the 2H(d,n)3He 1424000100031 reaction by bombarding a deuterium gas cell with an 1424000100032 accelerated beam of deuterons.The system provide up 1424000100033 to 3 mu-A of pulsed deuteron current with a pulse 1424000100034 width of 2 ns and a repetition rate of 2.5 MHz or 1424000100035 smaller (by factors of 2).The deuteron beam was 1424000100036 accelerated by way of the model FN Tandem Van de 1424000100037 Graaff accelerator before bombarding a cylindrical 1424000100038 gas cell pressurized to 7.8 atm with 99.999% pure 1424000100039 deuterium gas.Deuteron ions entered the cell through 1424000100040 a 6.35 mu-m Havar foil. 1424000100041 ERR-ANALYS (ERR-S) Statistical uncertainty 1424000100042 Total systematic unceratinty was calculated from 1424000100043 systematic uncertainties in 1424000100044 (ERR-1) neutron flux determination 1424000100045 (ERR-2) internal conversion coeficient of measured 1424000100046 radiation 1424000100047 (ERR-3) gamma ray detection efficiency 1424000100048 (ERR-4,,1.0) 238U sample mass 1424000100049 HISTORY (20090813C)Compiled by S.H. 1424000100050 ENDBIB 48 0 1424000100051 COMMON 3 3 1424000100052 ERR-1 ERR-2 ERR-3 1424000100053 PER-CENT PER-CENT PER-CENT 1424000100054 8.2 1.4 2.2 1424000100055 ENDCOMMON 3 0 1424000100056 ENDSUBENT 55 0 1424000199999 SUBENT 14240002 20090813 13571424000200001 BIB 2 3 1424000200002 REACTION (92-U-238(N,INL)92-U-238,PAR,SIG,G) 1424000200003 STATUS (TABLE) Data presented in fig. 3 of the reference 1424000200004 sent by author (A.H.) 1424000200005 ENDBIB 3 0 1424000200006 COMMON 2 3 1424000200007 E LVL-INI 1424000200008 KEV KEV 1424000200009 158.8 307.18 1424000200010 ENDCOMMON 3 0 1424000200011 DATA 4 5 1424000200012 EN EN-ERR DATA ERR-S 1424000200013 MEV MEV MB MB 1424000200014 5.0 0.50 554.29 17.21 1424000200015 6.0 0.55 640.88 29.90 1424000200016 10.0 0.25 137.33 5.11 1424000200017 12.0 0.21 132.15 9.41 1424000200018 14.0 0.17 115.15 0.42 1424000200019 ENDDATA 7 0 1424000200020 ENDSUBENT 19 0 1424000299999 SUBENT 14240003 20090813 13571424000300001 BIB 2 3 1424000300002 REACTION (92-U-238(N,INL)92-U-238,PAR,SIG,G) 1424000300003 STATUS (TABLE) Data presented in fig. 3 of the reference 1424000300004 sent by author (A.H.) 1424000300005 ENDBIB 3 0 1424000300006 COMMON 2 3 1424000300007 E LVL-INI 1424000300008 KEV KEV 1424000300009 211.0 518.1 1424000300010 ENDCOMMON 3 0 1424000300011 DATA 4 4 1424000300012 EN EN-ERR DATA ERR-S 1424000300013 MEV MEV MB MB 1424000300014 5.0 0.50 90.84 3.14 1424000300015 6.0 0.55 110.92 10.03 1424000300016 10.0 0.25 21.50 2.23 1424000300017 14.0 0.17 17.94 2.58 1424000300018 ENDDATA 6 0 1424000300019 ENDSUBENT 18 0 1424000399999 SUBENT 14240004 20090813 13571424000400001 BIB 2 3 1424000400002 REACTION (92-U-238(N,INL)92-U-238,PAR,SIG,G) 1424000400003 STATUS (TABLE) Data presented in fig. 3 of the reference 1424000400004 sent by author (A.H.) 1424000400005 ENDBIB 3 0 1424000400006 COMMON 2 3 1424000400007 E LVL-INI 1424000400008 KEV KEV 1424000400009 519.46 826.64 1424000400010 ENDCOMMON 3 0 1424000400011 DATA 4 4 1424000400012 EN EN-ERR DATA ERR-S 1424000400013 MEV MEV MB MB 1424000400014 5.0 0.50 41.59 3.35 1424000400015 6.0 0.55 48.45 2.74 1424000400016 8.0 0.35 19.5 0.75 1424000400017 10.0 0.25 13.4 0.58 1424000400018 ENDDATA 6 0 1424000400019 ENDSUBENT 18 0 1424000499999 SUBENT 14240005 20090813 13571424000500001 BIB 2 3 1424000500002 REACTION (92-U-238(N,INL)92-U-238,PAR,SIG,G) 1424000500003 STATUS (TABLE) Data presented in fig. 3 of the reference 1424000500004 sent by author (A.H.) 1424000500005 ENDBIB 3 0 1424000500006 COMMON 2 3 1424000500007 E LVL-INI 1424000500008 KEV KEV 1424000500009 583.55 731.93 1424000500010 ENDCOMMON 3 0 1424000500011 DATA 4 5 1424000500012 EN EN-ERR DATA ERR-S 1424000500013 MEV MEV MB MB 1424000500014 5.0 0.50 74.51 4.37 1424000500015 6.0 0.55 78.97 3.37 1424000500016 8.0 0.35 29.14 1.15 1424000500017 10.0 0.25 30.38 0.85 1424000500018 14.0 0.17 17.39 0.36 1424000500019 ENDDATA 7 0 1424000500020 ENDSUBENT 19 0 1424000599999 SUBENT 14240006 20090813 13571424000600001 BIB 2 3 1424000600002 REACTION (92-U-238(N,INL)92-U-238,PAR,SIG,G) 1424000600003 STATUS (TABLE) Data presented in fig. 4 of the reference 1424000600004 sent by author (A.H.) 1424000600005 ENDBIB 3 0 1424000600006 COMMON 2 3 1424000600007 E LVL-INI 1424000600008 KEV KEV 1424000600009 635.19 680.11 1424000600010 ENDCOMMON 3 0 1424000600011 DATA 4 5 1424000600012 EN EN-ERR DATA ERR-S 1424000600013 MEV MEV MB MB 1424000600014 5.0 0.50 85.82 6.18 1424000600015 6.0 0.55 72.92 2.84 1424000600016 8.0 0.35 33.97 1.02 1424000600017 10.0 0.25 29.65 0.88 1424000600018 14.0 0.17 18.04 0.85 1424000600019 ENDDATA 7 0 1424000600020 ENDSUBENT 19 0 1424000699999 SUBENT 14240007 20090813 13571424000700001 BIB 2 3 1424000700002 REACTION (92-U-238(N,INL)92-U-238,PAR,SIG,G) 1424000700003 STATUS (TABLE) Data presented in fig. 4 of the reference 1424000700004 sent by author (A.H.) 1424000700005 ENDBIB 3 0 1424000700006 COMMON 2 3 1424000700007 E LVL-INI 1424000700008 KEV KEV 1424000700009 686.99 731.93 1424000700010 ENDCOMMON 3 0 1424000700011 DATA 4 5 1424000700012 EN EN-ERR DATA ERR-S 1424000700013 MEV MEV MB MB 1424000700014 5.0 0.50 83.22 5.73 1424000700015 6.0 0.55 84.19 2.94 1424000700016 8.0 0.35 37.50 0.98 1424000700017 10.0 0.25 29.91 0.90 1424000700018 14.0 0.17 23.01 0.88 1424000700019 ENDDATA 7 0 1424000700020 ENDSUBENT 19 0 1424000799999 SUBENT 14240008 20090813 13571424000800001 BIB 2 3 1424000800002 REACTION (92-U-238(N,INL)92-U-238,PAR,SIG,G) 1424000800003 STATUS (TABLE) Data presented in fig. 4 of the reference 1424000800004 sent by author (A.H.) 1424000800005 ENDBIB 3 0 1424000800006 COMMON 2 3 1424000800007 E LVL-INI 1424000800008 KEV KEV 1424000800009 1060.3 1060.27 1424000800010 ENDCOMMON 3 0 1424000800011 DATA 4 4 1424000800012 EN EN-ERR DATA ERR-S 1424000800013 MEV MEV MB MB 1424000800014 5.0 0.50 94.50 6.23 1424000800015 6.0 0.55 83.57 3.91 1424000800016 8.0 0.35 33.47 1.12 1424000800017 10.0 0.25 26.12 0.90 1424000800018 ENDDATA 6 0 1424000800019 ENDSUBENT 18 0 1424000899999 SUBENT 14240009 20090813 13571424000900001 BIB 2 3 1424000900002 REACTION (92-U-238(N,2N)92-U-237,PAR,SIG,G) 1424000900003 STATUS (TABLE) Data presented in fig. 5 of the reference 1424000900004 sent by author (A.H.) 1424000900005 ENDBIB 3 0 1424000900006 COMMON 2 3 1424000900007 E LVL-INI 1424000900008 KEV KEV 1424000900009 121.2 204.06 1424000900010 ENDCOMMON 3 0 1424000900011 DATA 4 2 1424000900012 EN EN-ERR DATA ERR-S 1424000900013 MEV MEV MB MB 1424000900014 10.0 0.25 58.43 6.55 1424000900015 14.0 0.17 47.61 8.13 1424000900016 ENDDATA 4 0 1424000900017 ENDSUBENT 16 0 1424000999999 SUBENT 14240010 20090813 13571424001000001 BIB 2 3 1424001000002 REACTION (92-U-238(N,2N)92-U-237,PAR,SIG,G) 1424001000003 STATUS (TABLE) Data presented in fig. 5 of the reference 1424001000004 sent by author (A.H.) 1424001000005 ENDBIB 3 0 1424001000006 COMMON 2 3 1424001000007 E LVL-INI 1424001000008 KEV KEV 1424001000009 148.57 159.962 1424001000010 ENDCOMMON 3 0 1424001000011 DATA 4 2 1424001000012 EN EN-ERR DATA ERR-S 1424001000013 MEV MEV MB MB 1424001000014 10.0 0.25 75.78 7.86 1424001000015 14.0 0.17 39.33 7.96 1424001000016 ENDDATA 4 0 1424001000017 ENDSUBENT 16 0 1424001099999 ENDENTRY 10 0 1424099999999