ENTRY 14293 20170714 14291429300000001
SUBENT 14293001 20170714 14291429300100001
BIB 11 33 1429300100002
TITLE Measurement of Ratio of Eta of Uranium-233 to 1429300100003
Uranium-235 in the Reactivity Measurement Facility 1429300100004
AUTHOR (D.R.Deboisblanc,E.Fast) 1429300100005
REFERENCE (J,ANS,4,270,1961) 1429300100006
REL-REF (I,,D.R.Deboisblanc+,C,58GENEVA,13,75,1958) Facility 1429300100007
description. 1429300100008
INSTITUTE (1USAPPO) Phillips Petroleum Company, Atomic Energy 1429300100009
Division, Idaho Falls, Idaho. 1429300100010
FACILITY (REAC,1USAINL) The Reactivity Measurements Facility 1429300100011
(RMF) is a low power reactor located in the fuel 1429300100012
element storage canal of the Material Testing Reactor 1429300100013
at the National Reactor Testing Station in Idaho. 1429300100014
INC-SPECT The correction to eta was introduced to obtained the 1429300100015
Maxwellian-averaged eta ratio. This factor 1429300100016
[(sigma/sigma m)U-233/((sigma/sigma m)U-235)]* 1429300100017
[1-((sigma ef flux e)/(sigma f flux))U- 33]/ 1429300100018
[1-((sigma ef flux e)/(sigma f flux))U-235] where 1429300100019
subscripts m, e and f denote, respectively, 1429300100020
Maxwellian, above Maxwellian and fission, and sigma 1429300100021
the effective microscopic cross section for the 1429300100022
indicated energy region. 1429300100023
METHOD (REAC) The RMF measurements were made on 46-ml 1429300100024
samples sealed in polyethylene capsules. Dilutions of 1429300100025
the 1-N HNO3 solutions permitted extrapolation of the 1429300100026
differential reactivity to infinite dilution to 1429300100027
determine corrections for self-shielding. The three 1429300100028
experimental positions of the RMF used represent a 1429300100029
range of flux spectra of equivalent thin 1/v- 1429300100030
cadmium ratios from 28 to 150. 1429300100031
ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. 1429300100032
CORRECTION The measurements were corrected for all known sample 1429300100033
impurity effects. 1429300100034
HISTORY (20170714C) BP 1429300100035
ENDBIB 33 0 1429300100036
COMMON 1 3 1429300100037
EN-DUMMY 1429300100038
EV 1429300100039
0.0253 1429300100040
ENDCOMMON 3 0 1429300100041
ENDSUBENT 40 0 1429300199999
SUBENT 14293002 20170714 14291429300200001
BIB 4 6 1429300200002
REACTION ((92-U-233(N,ABS),,ETA,,MXW)/ 1429300200003
(92-U-235(N,ABS),,ETA,,MXW)) 1429300200004
SAMPLE The Harwell samples were received as a metal bead for 1429300200005
U-235, and as UO2F2 for U-233. 1429300200006
METHOD RMF Position: Center of water hole. 1429300200007
STATUS (TABLE) Table I, page 270. 1429300200008
ENDBIB 6 0 1429300200009
NOCOMMON 0 0 1429300200010
DATA 2 1 1429300200011
DATA DATA-ERR 1429300200012
NO-DIM NO-DIM 1429300200013
1.134 0.01 1429300200014
ENDDATA 3 0 1429300200015
ENDSUBENT 14 0 1429300299999
SUBENT 14293003 20170714 14291429300300001
BIB 4 6 1429300300002
REACTION ((92-U-233(N,ABS),,ETA,,MXW)/ 1429300300003
(92-U-235(N,ABS),,ETA,,MXW)) 1429300300004
SAMPLE The Harwell samples were received as a metal bead for 1429300300005
U-235, and as UO2F2 for U-233. 1429300300006
METHOD RMF Position: Corner of water hole. 1429300300007
STATUS (TABLE) Table I, page 270. 1429300300008
ENDBIB 6 0 1429300300009
NOCOMMON 0 0 1429300300010
DATA 2 1 1429300300011
DATA DATA-ERR 1429300300012
NO-DIM NO-DIM 1429300300013
1.123 0.008 1429300300014
ENDDATA 3 0 1429300300015
ENDSUBENT 14 0 1429300399999
SUBENT 14293004 20170714 14291429300400001
BIB 4 6 1429300400002
REACTION ((92-U-233(N,ABS),,ETA,,MXW)/ 1429300400003
(92-U-235(N,ABS),,ETA,,MXW)) 1429300400004
SAMPLE The Harwell samples were received as a metal bead for 1429300400005
U-235, and as UO2F2 for U-233. 1429300400006
METHOD RMF Position: Lattice. 1429300400007
STATUS (TABLE) Table I, page 270. 1429300400008
ENDBIB 6 0 1429300400009
NOCOMMON 0 0 1429300400010
DATA 2 1 1429300400011
DATA DATA-ERR 1429300400012
NO-DIM NO-DIM 1429300400013
1.116 0.006 1429300400014
ENDDATA 3 0 1429300400015
ENDSUBENT 14 0 1429300499999
SUBENT 14293005 20170714 14291429300500001
BIB 4 5 1429300500002
REACTION ((92-U-233(N,ABS),,ETA,,MXW)/ 1429300500003
(92-U-235(N,ABS),,ETA,,MXW)) 1429300500004
SAMPLE Both American samples were U3O8. 1429300500005
METHOD RMF Position: Center of water hole. 1429300500006
STATUS (TABLE) Table I, page 270. 1429300500007
ENDBIB 5 0 1429300500008
NOCOMMON 0 0 1429300500009
DATA 2 1 1429300500010
DATA DATA-ERR 1429300500011
NO-DIM NO-DIM 1429300500012
1.130 0.01 1429300500013
ENDDATA 3 0 1429300500014
ENDSUBENT 13 0 1429300599999
SUBENT 14293006 20170714 14291429300600001
BIB 4 5 1429300600002
REACTION ((92-U-233(N,ABS),,ETA,,MXW)/ 1429300600003
(92-U-235(N,ABS),,ETA,,MXW)) 1429300600004
SAMPLE Both American samples were U3O8. 1429300600005
METHOD RMF Position: Corner of water hole. 1429300600006
STATUS (TABLE) Table I, page 270. 1429300600007
ENDBIB 5 0 1429300600008
NOCOMMON 0 0 1429300600009
DATA 2 1 1429300600010
DATA DATA-ERR 1429300600011
NO-DIM NO-DIM 1429300600012
1.117 0.009 1429300600013
ENDDATA 3 0 1429300600014
ENDSUBENT 13 0 1429300699999
SUBENT 14293007 20170714 14291429300700001
BIB 4 5 1429300700002
REACTION ((92-U-233(N,ABS),,ETA,,MXW)/ 1429300700003
(92-U-235(N,ABS),,ETA,,MXW)) 1429300700004
SAMPLE Both American samples were U3O8. 1429300700005
METHOD RMF Position: Lattice. 1429300700006
STATUS (TABLE) Table I, page 270. 1429300700007
ENDBIB 5 0 1429300700008
NOCOMMON 0 0 1429300700009
DATA 2 1 1429300700010
DATA DATA-ERR 1429300700011
NO-DIM NO-DIM 1429300700012
1.129 0.007 1429300700013
ENDDATA 3 0 1429300700014
ENDSUBENT 13 0 1429300799999
ENDENTRY 7 0 1429399999999