ENTRY 10988 20130523 13921098800000001
SUBENT 10988001 20130523 13921098800100001
BIB 14 44 1098800100002
TITLE Angular distribution of fission fragments from fast 1098800100003
fission of U-235 1098800100004
AUTHOR (S.T.Hsue,G.F.Knoll,J.Meadows) 1098800100005
REFERENCE (J,NSE,66,24,197804) 1098800100006
INSTITUTE (1USAANL,1USAMHG) 1098800100007
FACILITY (DYNAM,1USAANL) 1098800100008
INC-SOURCE (P-LI7) 1098800100009
DETECTOR (TRD) Polyester track detector. 1098800100010
SAMPLE (92-U-235,ENR=0.9986) A 235U target 99.86 percent 1098800100011
(isotopically pure) with a deposit thickness of 0.937 1098800100012
mg/cm2 backed by a 0.127-mm-thick platinum foil. 1098800100013
METHOD (EXTB,CHSEP) After the exposure, the polyester film 1098800100014
detector was etched in a solution of KOH. Fragment 1098800100015
tracks for angles of 1, 15, 30, 60, 75 and 90 were 1098800100016
counted. The experiments were carried out using 1098800100017
average neutron energies of 265, 770, and 964 keV, 1098800100018
corresponding to the median energies of 1098800100019
sodium-deuterium, lanthan-beryllium, and 1098800100020
sodium-beryllium photoneutron sources. 1098800100021
CORRECTION Data were corrected for: 1. solid angle; 2. 1098800100022
thermal-neutron fission; 3. For low-energy neutrons 1098800100023
in the 7Li(p,n)7Be reaction; 4. scattering; 1098800100024
ANALYSIS With s-wave neutron capture, the fission 1098800100025
angular distribution is expected to be isotropic. 1098800100026
Small deviations from isotropic yield were observed 1098800100027
in the thermal-neutron data. After normalization by 1098800100028
the thermal-neutron run, the corrected data for each 1098800100029
neutron energy were least-square fitted with the 1098800100030
expression W(theta) = 1 + A2 x cos2 theta, where A2 is 1098800100031
defined as the anisotropy factor. 1098800100032
ERR-ANALYS (ERR-T) The estimated error values are based on the 1098800100033
uncertainties in the corrections as well as from 1098800100034
counting statistics and an assumed possible 1098800100035
systematic error. 1098800100036
(ERR-1) 1.5 % for all corrections. 1098800100037
(ERR-2) 1.0 % systematic error in the normal counting 1098800100038
process. 1098800100039
STATUS Data from private communication J.W.Meadows 82/10/13 1098800100040
(APRVD) approved by J.W.Meadows, 82/11/17. 1098800100041
HISTORY (19821021C) 1098800100042
(20130523A) BP: Updated to new date formats,lower 1098800100043
case. corrections according last EXFOR rules and Dict. 1098800100044
Corrected subentries according to the NSE article data,1098800100045
digitized Fig. 2-4. 1098800100046
ENDBIB 44 0 1098800100047
COMMON 4 3 1098800100048
EN-RSL ANG-RSL ERR-1 ERR-2 1098800100049
MEV ADEG PER-CENT PER-CENT 1098800100050
0.035 6. 1.5 1.0 1098800100051
ENDCOMMON 3 0 1098800100052
ENDSUBENT 51 0 1098800199999
SUBENT 10988002 20130523 13921098800200001
BIB 3 4 1098800200002
REACTION (92-U-235(N,F),,DA,FF,COS/RSD) 1098800200003
STATUS (TABLE) Table I, page 26. 1098800200004
HISTORY (20130523A) Corrected data according to Table I and 1098800200005
Fig. 5 of the published NSE article. 1098800200006
ENDBIB 4 0 1098800200007
COMMON 1 3 1098800200008
NUMBER 1098800200009
NO-DIM 1098800200010
2. 1098800200011
ENDCOMMON 3 0 1098800200012
DATA 3 3 1098800200013
EN DATA ERR-T 1098800200014
MEV NO-DIM NO-DIM 1098800200015
0.265 -0.010 0.014 1098800200016
0.770 0.137 0.016 1098800200017
0.964 0.157 0.026 1098800200018
ENDDATA 5 0 1098800200019
ENDSUBENT 18 0 1098800299999
SUBENT 10988003 20130523 13921098800300001
BIB 2 2 1098800300002
REACTION (92-U-235(N,F),,DA,FF,RSD) 1098800300003
STATUS (CURVE) Fig. 2, page 26. 1098800300004
ENDBIB 2 0 1098800300005
COMMON 1 3 1098800300006
EN 1098800300007
KEV 1098800300008
265.0 1098800300009
ENDCOMMON 3 0 1098800300010
DATA 3 6 1098800300011
ANG DATA ERR-T 1098800300012
ADEG NO-DIM NO-DIM 1098800300013
1.000E+00 9.947E-01 1.283E-02 1098800300014
1.500E+01 9.692E-01 1.283E-02 1098800300015
3.000E+01 9.957E-01 1.283E-02 1098800300016
6.000E+01 9.916E-01 1.282E-02 1098800300017
7.500E+01 9.882E-01 1.211E-02 1098800300018
9.000E+01 1.000E+00 1.354E-02 1098800300019
ENDDATA 8 0 1098800300020
ENDSUBENT 19 0 1098800399999
SUBENT 10988004 20130523 13921098800400001
BIB 2 2 1098800400002
REACTION (92-U-235(N,F),,DA,FF,RSD) 1098800400003
STATUS (CURVE) Fig. 3, page 26. 1098800400004
ENDBIB 2 0 1098800400005
COMMON 1 3 1098800400006
EN 1098800400007
KEV 1098800400008
770.0 1098800400009
ENDCOMMON 3 0 1098800400010
DATA 3 6 1098800400011
ANG DATA ERR-T 1098800400012
ADEG NO-DIM NO-DIM 1098800400013
1.000E+00 1.123E+00 1.564E-02 1098800400014
1.500E+01 1.115E+00 1.493E-02 1098800400015
3.000E+01 1.091E+00 1.493E-02 1098800400016
6.000E+01 1.026E+00 1.422E-02 1098800400017
7.500E+01 1.007E+00 1.422E-02 1098800400018
9.000E+01 1.000E+00 1.422E-02 1098800400019
ENDDATA 8 0 1098800400020
ENDSUBENT 19 0 1098800499999
SUBENT 10988005 20130523 13921098800500001
BIB 2 2 1098800500002
REACTION (92-U-235(N,F),,DA,FF,RSD) 1098800500003
STATUS (CURVE) Fig. 4, page 26. 1098800500004
ENDBIB 2 0 1098800500005
COMMON 1 3 1098800500006
EN 1098800500007
KEV 1098800500008
964.0 1098800500009
ENDCOMMON 3 0 1098800500010
DATA 3 6 1098800500011
ANG DATA ERR-T 1098800500012
ADEG NO-DIM NO-DIM 1098800500013
1.000E+00 1.131E+00 1.769E-02 1098800500014
1.500E+01 1.148E+00 1.769E-02 1098800500015
3.000E+01 1.123E+00 1.769E-02 1098800500016
6.000E+01 1.058E+00 1.627E-02 1098800500017
7.500E+01 1.012E+00 1.627E-02 1098800500018
9.000E+01 1.000E+00 1.557E-02 1098800500019
ENDDATA 8 0 1098800500020
ENDSUBENT 19 0 1098800599999
ENDENTRY 5 0 1098899999999