ENTRY 13721 20010927 00001372100000001 SUBENT 13721001 20010927 00001372100100001 BIB 14 34 1372100100002 INSTITUTE (1USAORL) 1372100100003 REFERENCE (J,PR,174,1500,196810) 1372100100004 AUTHOR (F.Pleasonton) 1372100100005 TITLE Fission-Fragment Energy-Correlation Measurements for 1372100100006 the Thermal-Neutron Fission of 233U 1372100100007 FACILITY (REAC) Oak Ridge Research Reactor 1372100100008 INC-SPECT Thermal neutrons, cadmium ratio ~20 (flux 1E+8 neutrons1372100100009 per sec) 1372100100010 SAMPLE 99.3% enriched 233U target prepared by vacuum 1372100100011 evaporation of 1-cm diameter ~25 microg/cm2 deposit of1372100100012 233U(3)O(8) onto thin carbon film covering an aperture1372100100013 of ~2.2-cm diameter in a Ni frame. After evaporation 1372100100014 the target 1372100100015 - is set at an angle of 52.5 deg to the beam axis 1372100100016 midway between the detectors. 1372100100017 - measured ~40 microg/cm2 in the direction of the 1372100100018 detectors with energy loss of the fission fragments 1372100100019 in the carbon backing <2.5 MeV. 1372100100020 DETECTOR (SIBAR) Two silicon surface barrier detectors of 300 1372100100021 mm2 area used to detect the fission fragments. 1372100100022 Detectors mounted papallel to the beam, at distancies 1372100100023 of ~8.5 cm from its axis. 1372100100024 MONITOR Absolute energy calibration obtained by comparison 1372100100025 with the pulse-height response of the same detectors 1372100100026 to a thin 252Cf source measured in the same geometry 1372100100027 as the 233U source. 1372100100028 ANALYSIS Double-energy measurements of the postneutron-emission 1372100100029 fission fragments made. 1372100100030 CORRECTION Preneutron-emission mass distributions were corrected 1372100100031 for dispersion to account for the effects of detector 1372100100032 resolution and neutron emission. 1372100100033 ERR-ANALYS (DATA-ERR) Absolute uncertainties given. 1372100100034 STATUS Data taken from Table I of reference. 1372100100035 HISTORY (20010911C) IS 1372100100036 ENDBIB 34 0 1372100100037 COMMON 1 3 1372100100038 KT 1372100100039 EV 1372100100040 0.0253 1372100100041 ENDCOMMON 3 0 1372100100042 ENDSUBENT 41 0 1372100199999 SUBENT 13721002 20010911 00001372100200001 BIB 1 2 1372100200002 REACTION 1(92-U-233(N,F),PRE,AKE,HF,MXW,DERIV) 1372100200003 2(92-U-233(N,F),PRE,AKE,HF,MXW,DERIV) 1372100200004 ENDBIB 2 0 1372100200005 NOCOMMON 0 0 1372100200006 DATA 4 1 1372100200007 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 1372100200008 MEV MEV MEV MEV 1372100200009 70.1 0.8 69.9 0.8 1372100200010 ENDDATA 3 0 1372100200011 ENDSUBENT 10 0 1372100299999 SUBENT 13721003 20010911 00001372100300001 BIB 1 2 1372100300002 REACTION 1(92-U-233(N,F),PRE,AKE,LF,MXW,DERIV) 1372100300003 2(92-U-233(N,F),PRE,AKE,LF,MXW,DERIV) 1372100300004 ENDBIB 2 0 1372100300005 NOCOMMON 0 0 1372100300006 DATA 4 1 1372100300007 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 1372100300008 MEV MEV MEV MEV 1372100300009 101.9 1.0 102.1 1.0 1372100300010 ENDDATA 3 0 1372100300011 ENDSUBENT 10 0 1372100399999 SUBENT 13721004 20010911 00001372100400001 BIB 1 2 1372100400002 REACTION 1(92-U-233(N,F),PRE,AKE,FF,MXW,DERIV) 1372100400003 2(92-U-233(N,F),PRE,AKE,FF,MXW,DERIV) 1372100400004 ENDBIB 2 0 1372100400005 NOCOMMON 0 0 1372100400006 DATA 4 1 1372100400007 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 1372100400008 MEV MEV MEV MEV 1372100400009 172.0 1.8 172.0 1.8 1372100400010 ENDDATA 3 0 1372100400011 ENDSUBENT 10 0 1372100499999 SUBENT 13721005 20010911 00001372100500001 BIB 1 2 1372100500002 REACTION 1(92-U-233(N,F),PRE,AP,HF,MXW,DERIV) 1372100500003 2(92-U-233(N,F),PRE,AP,HF,MXW,DERIV) 1372100500004 ENDBIB 2 0 1372100500005 NOCOMMON 0 0 1372100500006 DATA 4 1 1372100500007 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 1372100500008 NO-DIM NO-DIM NO-DIM NO-DIM 1372100500009 138.8 1.0 139.1 1.0 1372100500010 ENDDATA 3 0 1372100500011 ENDSUBENT 10 0 1372100599999 SUBENT 13721006 20010911 00001372100600001 BIB 1 2 1372100600002 REACTION 1(92-U-233(N,F),PRE,AP,LF,MXW,DERIV) 1372100600003 2(92-U-233(N,F),PRE,AP,LF,MXW,DERIV) 1372100600004 ENDBIB 2 0 1372100600005 NOCOMMON 0 0 1372100600006 DATA 4 1 1372100600007 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 1372100600008 NO-DIM NO-DIM NO-DIM NO-DIM 1372100600009 95.2 1.0 94.9 1.0 1372100600010 ENDDATA 3 0 1372100600011 ENDSUBENT 10 0 1372100699999 ENDENTRY 6 0 1372199999999