ENTRY 20592 19840409 00002059200000001
SUBENT 20592001 19840409 00002059200100001
BIB 15 49 2059200100002
INSTITUTE (2JPNKTO) 2059200100003
REFERENCE (J,NST,8,(9),492,7109) NUMERICAL VALUES AND 2059200100004
COMPARISONS. 2059200100005
AUTHOR (K.KOBAYASHI,T.HASHIMOTO,I.KIMURA) 2059200100006
TITLE -MEASUREMENTS OF AVERAGE CROSS SECTION FOR TH232(N, 2059200100007
2N)TH231 REACTION TO NEUTRONS WITH FISSION-TYPE 2059200100008
REACTOR SPECTRUM AND OF GAMMA-RAY INTENSITIES OF 2059200100009
TH231- 2059200100010
FACILITY .KYOTO UNIVERSITY REACTOR (KUR). 2059200100011
INC-SOURCE (REAC ) IRRADIATION IN KUR CORE. 2059200100012
INC-SPECT .VERY CLOSE TO FISSION SPECTRUM ABOVE 1 MEV. 2059200100013
SAMPLE .AT IRRADIATION 0.5 G OF THORIUM NITRATE. 2059200100014
.AT DETECTION,AFTER CHEMICAL SEPARATION (SEE DETAILS 2059200100015
IN P.493 OF MAIN REFERENCE),FOUR SEPARATED FOILS 2059200100016
0.8 CM**2 OF SURFACE. 2059200100017
METHOD (ACTIV) ACTIVATION. 2059200100018
.MEASUREMENT OF THE ABSOLUTE AMOUNT OF TH231 MADE 2059200100019
BY COMPARISON WITH AN ENRICHED REFERENCE U-235 2059200100020
FOIL,DETAILS IN P.494 OF J.NUCL.SCI.TECHN.,8,492, 2059200100021
(1971). 2059200100022
.DETERMINATION OF THE ABSOLUTE AMOUNT OF TH232 2059200100023
WERE MADE AFTER IRRADIATION IN THERMAL COLUMN, 2059200100024
DETECTION OF GAMMA ACTIVITIES OF PA-233 AND 2059200100025
COMPARISON WITH KNOWN WEIGHT TH SAMPLES. 2059200100026
.INDUCED ACTIVITY IN NI-58,MG-24 AND AL-27 THRESHOLD 2059200100027
FOILS WAS MEASURED FOR MONITORING THE NEUTRON FLUX. 2059200100028
DETECTOR (GELI ) GE-LI DETECTOR OF PREVIOUSLY CALIBRATED 2059200100029
EFFICIENCY. 2059200100030
MONITOR (28-NI-58(N,P)27-CO-58,,SIG) 2059200100031
(12-MG-24(N,P)11-NA-24,,SIG) 2059200100032
(13-AL-27(N,A)11-NA-24,,SIG) 2059200100033
THRESHOLD FOILS OF NI,MG AND AL FOR 2059200100034
MONITORING THE NEUTRON FLUX. 2059200100035
.GE-LI DETECTOR CALIBRATED WITH STANDARD GAMMA 2059200100036
SOURCES. 2059200100037
COMMENT .RESULT AGREES SATISFACTORILY WITH PHILIPS,J.NUCL. 2059200100038
ENERG.7,215 (1958) BUT IS IN POOR AGREEMENT WITH 2059200100039
OTHER AUTHORS. 2059200100040
STATUS .NUMERICAL DATA TAKEN FROM REFERENCE. 2059200100041
HISTORY (760804C) 2059200100042
(761217E) 2059200100043
(840106U) A.P.T. JAPAN CODE CHANGED TO JPN 2059200100044
(840106E) 2059200100045
ERR-ANALYS .FAST NEUTRON FLUX UNCERTAINTY ESTIMATED TO 3 P.C. 2059200100046
.ERROR IN QUANTITY OF TH-231 IN SAMPLES,3.7 P.C. 2059200100047
.STANDARD DEVIATION FROM THE FOUR THORIUM SAMPLES 2059200100048
ABOUT 5 P.C. 2059200100049
.ALL THESE ERRORS WERE ADDED QUADRATICALLY TO GIVE 2059200100050
A TOTAL ERROR OF 6.7 P.C. 2059200100051
ENDBIB 49 0 2059200100052
NOCOMMON 0 0 2059200100053
ENDSUBENT 52 0 2059200199999
SUBENT 20592002 19840126 00002059200200001
BIB 3 6 2059200200002
REACTION (90-TH-232(N,2N)90-TH-231,,SIG,,FIS) 2059200200003
AVERAGE FISSION SPECTRUM CROSS 2059200200004
SECTION 2059200200005
HALF-LIFE (HL,90-TH-231) MEASURED BY AUTHORS. 2059200200006
HISTORY (760804C) 2059200200007
(761217E) 2059200200008
ENDBIB 6 0 2059200200009
NOCOMMON 0 0 2059200200010
DATA 5 1 2059200200011
EN-DUMMY DATA DATA-ERR HL HL-ERR 2059200200012
MEV MB MB HR HR 2059200200013
1.5000E+00 1.2500E+01 8.4000E-01 2.5700E+01 2.0000E-01 2059200200014
ENDDATA 3 0 2059200200015
ENDSUBENT 14 0 2059200299999
ENDENTRY 2 0 2059299999999