ENTRY 20449 19840119 00002044900000001 SUBENT 20449001 19840119 00002044900100001 BIB 12 24 2044900100002 INSTITUTE (2UK HAR) 2044900100003 REFERENCE (R,AERE-R-6761,7103) 2044900100004 AUTHOR (M.J.CABELL, M.WILKINS) 2044900100005 TITLE -THE THERMAL NEUTRON CAPTURE CROSS SECTIONS OF 92-U-2342044900100006 AND -U-236.- 2044900100007 FACILITY DIDO REACTOR 2044900100008 (SPECM) AEI TYPE MS5 MASS SPECTROMETER. 2044900100009 INC-SOURCE (REAC ) REACTOR, SAMPLES WERE IRRADIATED WITH COBALT2044900100010 MONITOR IN THE REACTOR FOR APPROXIMATELY TWO YEARS. 2044900100011 INC-SPECT THE IRRADIATION POSITIONS PROVIDED THERMAL NEUTRONS 2044900100012 WESTCOTT EPITHERMAL INDEX PARAMETER 2044900100013 (R =(7.5 +- 1.0)E-4) WITH A TEMP. OF 116 +- 9 DEG-C. 2044900100014 METHOD EXAMINATION BY THE MASS SPECTROMETER. 2044900100015 MONITOR (27-CO-59(N,G)27-CO-60,,SIG) 2044900100016 = 37.32 +- 0.11 B AT 2200 M/SEC, CABELL, 2044900100017 WILKINS, TO BE PUBLISHED IN J.BRIT.NUCL.ENERGY SOC. 2044900100018 COMMENT THE REASONS OF NEW MEASUREMENT ARE BASED ON THE RECENT2044900100019 AVAILABILITY OF (A) IRRADIATION POSITIONS WHICH 2044900100020 PROVIDE ESSENTIALLY THERMAL NEUTRONS OF ADEQUATE 2044900100021 INTENSITY COMBINED WITH, (B) SAMPLES OF U-ISOTOPES 2044900100022 ALMOST ISOTOPICALLY PURE 2044900100023 HISTORY (710519C) 2044900100024 (760112E) 2044900100025 ERR-ANALYS SYSTEMATIC ERROR ALSO CONSIDERED. 2044900100026 ENDBIB 24 0 2044900100027 NOCOMMON 0 0 2044900100028 ENDSUBENT 27 0 2044900199999 SUBENT 20449002 19840119 00002044900200001 BIB 5 12 2044900200002 REACTION (92-U-234(N,G)92-U-235,,SIG,,SPA) 2044900200003 SAMPLE .COBALT MONITORS CONTAINED IN EVACUATED 2044900200004 SILICA AMPOULES WITH THE MIXTURES OF APPROXIMATLY 2044900200005 EQUAL QUANTITIES (ABOUT 50 MICRO-G) OF 2044900200006 U-234 AND U-238, 2044900200007 .U-234 98.84 ATOM PERCENT SEPARATED AT AERE, 2044900200008 U-238 99.996 ATOM PERCENT OBTAINED AT AERE. 2044900200009 PART-DET (RSD ) RESIDUAL NUCLEUS. 2044900200010 ATOMIC RATIO OF U-235 RELATIVE TO U-238. 2044900200011 STATUS .DATA FROM AERE-R-6761. 2044900200012 HISTORY (710519C) 2044900200013 (760112E) 2044900200014 ENDBIB 12 0 2044900200015 NOCOMMON 0 0 2044900200016 DATA 3 1 2044900200017 EN-DUMMY DATA DATA-ERR 2044900200018 MEV B B 2044900200019 2.5300E-08 1.0110E+02 1.3000E+00 2044900200020 ENDDATA 3 0 2044900200021 ENDSUBENT 20 0 2044900299999 SUBENT 20449003 19840119 00002044900300001 BIB 5 12 2044900300002 REACTION (92-U-234(N,G)92-U-235,,SIG,,MXW) 2044900300003 SAMPLE .COBALT MONITORS CONTAINED IN EVACUATED 2044900300004 SILICA AMPOULES WITH THE MIXTURES OF APPROXIMATLY 2044900300005 EQUAL QUANTITIES (ABOUT 50 MICRO-G) OF 2044900300006 U-234 AND U-238, 2044900300007 .U-234 98.84 ATOM PERCENT SEPARATED AT AERE, 2044900300008 U-238 99.996 ATOM PERCENT OBTAINED AT AERE. 2044900300009 PART-DET (RSD ) RESIDUAL NUCLEUS. 2044900300010 ATOMIC RATIO OF U-235 RELATIVE TO U-238. 2044900300011 STATUS .DATA FROM AERE-R-6761. 2044900300012 HISTORY (710519C) 2044900300013 (760112E) 2044900300014 ENDBIB 12 0 2044900300015 NOCOMMON 0 0 2044900300016 DATA 3 1 2044900300017 EN-DUMMY DATA DATA-ERR 2044900300018 MEV B B 2044900300019 2.5300E-08 1.0050E+02 1.3000E+00 2044900300020 ENDDATA 3 0 2044900300021 ENDSUBENT 20 0 2044900399999 SUBENT 20449004 19840119 00002044900400001 BIB 5 12 2044900400002 REACTION (92-U-236(N,G)92-U-237,,SIG,,SPA) 2044900400003 SAMPLE .COBALT MONITORS CONTAINED IN EVACUATED 2044900400004 SILICA AMPOULES WITH THE MIXTURES OF APPROXIMATLY 2044900400005 EQUAL QUANTITIES (ABOUT 50 MICRO-G) OF 2044900400006 U-236 AND U-238, 2044900400007 .U-236 99.76 ATOM PERCENT FROM OAK RIDGE, 2044900400008 U-238 99.996 ATOM PERCENT OBTAINED AT AERE. 2044900400009 PART-DET (RSD ) RESIDUAL NUCLEUS. 2044900400010 ATOMIC RATIO OF U-236 RELATIVE TO U-238. 2044900400011 STATUS .DATA FROM AERE-R-6761. 2044900400012 HISTORY (710519C) 2044900400013 (760112E) 2044900400014 ENDBIB 12 0 2044900400015 NOCOMMON 0 0 2044900400016 DATA 3 1 2044900400017 EN-DUMMY DATA DATA-ERR 2044900400018 MEV B B 2044900400019 2.5300E-08 8.8600E+00 4.0000E+00 2044900400020 ENDDATA 3 0 2044900400021 ENDSUBENT 20 0 2044900499999 SUBENT 20449005 19840119 00002044900500001 BIB 5 12 2044900500002 REACTION (92-U-236(N,G)92-U-237,,SIG,,MXW) 2044900500003 SAMPLE .COBALT MONITORS CONTAINED IN EVACUATED 2044900500004 SILICA AMPOULES WITH THE MIXTURES OF APPROXIMATLY 2044900500005 EQUAL QUANTITIES (ABOUT 50 MICRO-G) OF 2044900500006 U-236 AND U-238, 2044900500007 .U-236 99.76 ATOM PERCENT FROM OAK RIDGE, 2044900500008 U-238 99.996 ATOM PERCENT OBTAINED AT AERE. 2044900500009 PART-DET (RSD ) RESIDUAL NUCLEUS. 2044900500010 ATOMIC RATIO OF U-236 RELATIVE TO U-238. 2044900500011 STATUS .DATA FROM AERE-R-6761. 2044900500012 HISTORY (710519C) 2044900500013 (760112E) 2044900500014 ENDBIB 12 0 2044900500015 NOCOMMON 0 0 2044900500016 DATA 3 1 2044900500017 EN-DUMMY DATA DATA-ERR 2044900500018 MEV B B 2044900500019 2.5300E-08 8.4700E+00 4.0000E+00 2044900500020 ENDDATA 3 0 2044900500021 ENDSUBENT 20 0 2044900599999 ENDENTRY 5 0 2044999999999