ENTRY 10759 20091113 13601075900000001
SUBENT 10759001 20091113 13601075900100001
BIB 10 26 1075900100002
INSTITUTE (1USAORL) 1075900100003
REFERENCE (R,ORNL-TM-6246,197805) 1075900100004
AUTHOR (R.Gwin,R.R.Spencer,R.W.Ingle,J.H.Todd,H.Weaver) 1075900100005
TITLE Measurements of the Average Number of Prompt Neutrons 1075900100006
Emitted per Fission of 239Pu and 235U. 1075900100007
FACILITY (LINAC,1USAORL) Oak Ridge Electron Linear Accelerator 1075900100008
SAMPLE The fissile isotopes were deposited on aluminum discs 1075900100009
to a surface density of 1+-0.3 gram/m. 1075900100010
DETECTOR (SCIN) Gadolinium-loaded liquid scintillator 1075900100011
(with an efficiency of about 83%) used to detect 1075900100012
fission neutrons. 1075900100013
(FISCH) Fission chamber (efficiency 95%) used to 1075900100014
define fission events. 1075900100015
CORRECTION Corrected for: 1075900100016
. false fissions, 1075900100017
. displacement of fission samples from center of 1075900100018
liquid scintillator, 1075900100019
. backgrounds in the neutron detector, 1075900100020
. pulse pile up, 1075900100021
. fission spectrum differences. 1075900100022
STATUS (APRVD) Approved by R. Gwin, 1984/3/2. 1075900100023
HISTORY (19780801C) 1075900100024
(19830829U) BIB corrections 1075900100025
(19841024A) subentries 2 and 3 moved to an 12906. 1075900100026
(20091113A) VM:Updated to new date formats,lower case. 1075900100027
BIB updates. 1075900100028
ENDBIB 26 0 1075900100029
NOCOMMON 0 0 1075900100030
ENDSUBENT 29 0 1075900199999
NOSUBENT 10759002 19841024 00001075900200001
NOSUBENT 10759003 19841024 00001075900300001
SUBENT 10759004 20091113 13601075900400001
BIB 5 7 1075900400002
REACTION ((94-PU-239(N,F),PR,NU)/(98-CF-252(0,F),PR,NU)) 1075900400003
METHOD (TOF). 21.6-m flight path. 1075900400004
ERR-ANALYS (DATA-ERR) Uncertainties include statistical errors and1075900400005
a 0.25% uncertainty due to discrepant results from 1075900400006
the two 252Cf fission chambers. 1075900400007
STATUS (TABLE) Data taken from table in report. 1075900400008
HISTORY (19840305A) Bib update. 1075900400009
ENDBIB 7 0 1075900400010
NOCOMMON 0 0 1075900400011
DATA 4 43 1075900400012
EN-MIN EN-MAX DATA DATA-ERR 1075900400013
KEV KEV NO-DIM NO-DIM 1075900400014
0.050 0.100 0.7701 0.0021 1075900400015
0.10 0.20 0.7750 0.0038 1075900400016
0.20 0.30 0.7716 0.0040 1075900400017
0.30 0.40 0.7650 0.0050 1075900400018
0.40 0.50 0.7668 0.0044 1075900400019
0.51 0.61 0.7631 0.0039 1075900400020
0.61 0.71 0.7585 0.0098 1075900400021
0.71 0.80 0.7841 0.0086 1075900400022
0.80 0.90 0.7734 0.0078 1075900400023
0.90 1.00 0.7662 0.0071 1075900400024
1.0 2.0 0.7690 0.0035 1075900400025
2.0 3.0 0.7848 0.0110 1075900400026
3.0 4.0 0.7676 0.0080 1075900400027
4.0 5.0 0.7661 0.0109 1075900400028
5.0 6.0 0.7577 0.0131 1075900400029
6.0 7.0 0.7490 0.0108 1075900400030
7.0 8.0 0.7669 0.0055 1075900400031
8.0 9.0 0.7582 0.0159 1075900400032
9.0 10.0 0.7593 0.0167 1075900400033
10.0 20.0 0.7711 0.0063 1075900400034
20.0 30.0 0.7715 0.0082 1075900400035
30.0 40.0 0.7598 0.0138 1075900400036
40. 50. 0.7609 0.0081 1075900400037
50. 60. 0.7675 0.0069 1075900400038
60. 74. 0.7665 0.0070 1075900400039
74. 85. 0.7522 0.0092 1075900400040
85. 94. 0.7565 0.0191 1075900400041
94. 100. 0.7654 0.0189 1075900400042
100. 200. 0.7793 0.0045 1075900400043
200. 300. 0.7746 0.0043 1075900400044
300. 400. 0.7764 0.0042 1075900400045
400. 500. 0.7870 0.0043 1075900400046
500. 600. 0.7892 0.0046 1075900400047
600. 710. 0.7903 0.0047 1075900400048
710. 800. 0.7936 0.0048 1075900400049
800. 920. 0.7944 0.0049 1075900400050
920. 1000. 0.8012 0.0051 1075900400051
1000. 2100. 0.8179 0.0024 1075900400052
2100. 3100. 0.8575 0.0041 1075900400053
3100. 4100. 0.8994 0.0054 1075900400054
4100. 5100. 0.9376 0.0070 1075900400055
5100. 6400. 0.9812 0.0077 1075900400056
6400. 7200. 1.0226 0.0080 1075900400057
ENDDATA 45 0 1075900400058
ENDSUBENT 57 0 1075900499999
SUBENT 10759005 20091113 13601075900500001
BIB 4 6 1075900500002
REACTION ((92-U-235(N,F),PR,NU)/(98-CF-252(0,F),PR,NU)) 1075900500003
METHOD (TOF). 21.6-M flight path. 1075900500004
STATUS (SPSDD) Authors suggest that these data not be used 1075900500005
because of problems in background. 1075900500006
HISTORY (19801210U) Status change. 1075900500007
(19840305A) Bib update. 1075900500008
ENDBIB 6 0 1075900500009
NOCOMMON 0 0 1075900500010
NODATA 0 0 1075900500011
ENDSUBENT 10 0 1075900599999
SUBENT 10759006 20091113 13601075900600001
BIB 3 4 1075900600002
REACTION ((94-PU-239(N,F),PR,NU)/(98-CF-252(0,F),PR,NU)) 1075900600003
STATUS (SPSDD,13101004) 1075900600004
HISTORY (19840305A) Bib update. 1075900600005
(19870122A) Data superseded. 1075900600006
ENDBIB 4 0 1075900600007
NOCOMMON 0 0 1075900600008
NODATA 0 0 1075900600009
ENDSUBENT 8 0 1075900699999
ENDENTRY 6 0 1075999999999