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