ENTRY 20692 19840409 00002069200000001 SUBENT 20692001 19840409 00002069200100001 BIB 15 38 2069200100002 INSTITUTE (2JPNKTO) 2069200100003 REFERENCE ((P,NEANDC(J)-42L,20,7509)=(P,INDC(JAP)-28L,20,7509)) 2069200100004 AUTHOR (T.NISHI,I.FUJIWARA,N.IMANSHI) 2069200100005 TITLE -(N,2N) CROSS SECTIONS FOR NP-237- 2069200100006 FACILITY (VDG ) FOR 9.6-MEV NEUTRONS KYOTO UNIVERSITY VAN 2069200100007 DE GRAAFF WITH A 2.8-MEV HE-3 BEAM WAS USED. 2069200100008 (CCW ) FOR 14.2-MEV NEUTRONS A DEUTERON BEAM 2069200100009 GENERATED IN A COCKCROFT-WALTON ACCELERATOR WAS 2069200100010 USED. 2069200100011 INC-SOURCE .FOR 9.6-MEV NEUTRONS, BE-9(HE-3,N)C-11 REACTION IN 2069200100012 A THICK BERYLIUM TARGET WAS USED. 2069200100013 .FOR 14.2-MEV NEUTRONS H-3(D,N)HE-4 REACTION WAS 2069200100014 USED. 2069200100015 SAMPLE .NEPTUNIUM SAMPLE PURIFIED CHEMICALY FROM 2069200100016 CONTAMINATING PLUTONIUM AND CONVERTED TO OXIDE. 2069200100017 .THICKNESS 30 TO 80 MG/CM2. 2069200100018 .IRRADIATION TIME = 48 TO 70 HOURS. 2069200100019 METHOD (ACTIV) ACTIVATION OF PU-236. 2069200100020 .ALPHA-ACTIVITY RATIO OF PU-236/NP-237 WAS MEASURED 2069200100021 WITH A TWO-STEP MEASUREMENT ADDING A KNOWN AMOUNT 2069200100022 OF PU-238 OR PU-239 TO THE IRRADIATED NP SAMPLE, 2069200100023 THE ALPHA-ACTIVITY RATIO OF (PU-238 OR PU-239)/NP- 2069200100024 237 AND OF PU-236/(PU-238 OR PU-239). 2069200100025 DETECTOR .NO DETAILS GIVEN ABOUT DETECTION OF ALPHA PARTICLES. 2069200100026 MONITOR .NEUTRON FLUX MONITORED USING THRESHOLD DETECTORS 2069200100027 WITH AU-197(N,2N), TL-203(N,2N), U-238(N,2N) 2069200100028 REACTIONS. 2069200100029 COMMENT .GOOD AGREEMENT WITH INTERPOLATED VALUES FROM 2069200100030 LITERATURE. 2069200100031 STATUS .DATA TAKEN FROM REFERENCE. 2069200100032 HISTORY (761117C) JG. 2069200100033 (771109E) 2069200100034 (840106U) A.P.T. JAPAN CODE CHANGED TO JPN 2069200100035 (840106E) 2069200100036 CORRECTION .ELECTRONIC-CAPTURE TO BETA MINUS BRANCHING RATIO 2069200100037 OF ISOMERIC STATE IN NP-236 ACCOUNTED, TAKEN FROM 2069200100038 M.R.SCHMORAK NUCL.DATA SHEETS BG (1970) 623 = 1.08. 2069200100039 ERR-ANALYS .NO DETAILS GIVEN. 2069200100040 ENDBIB 38 0 2069200100041 NOCOMMON 0 0 2069200100042 ENDSUBENT 41 0 2069200199999 SUBENT 20692002 19840127 00002069200200001 BIB 1 1 2069200200002 REACTION (93-NP-237(N,2N)93-NP-236,,SIG) 2069200200003 ENDBIB 1 0 2069200200004 NOCOMMON 0 0 2069200200005 DATA 2 2 2069200200006 EN DATA 2069200200007 MEV B 2069200200008 9.6000E+00 4.5000E-01 2069200200009 1.4200E+01 5.1000E-01 2069200200010 ENDDATA 4 0 2069200200011 ENDSUBENT 10 0 2069200299999 ENDENTRY 2 0 2069299999999