ENTRY 21860 20090401 22112186000000001 SUBENT 21860001 20090401 22112186000100001 BIB 16 48 2186000100002 INSTITUTE (2BLGGHT) 2186000100003 (2BLGMOL) Experimental site 2186000100004 REFERENCE (J,PR/C,27,1117,198303) Main reference 2186000100005 AUTHOR (H.Thierens, A.Declercq, E.Jacobs, M.Piessens, 2186000100006 P.D-Hondt, D.Defrenne) 2186000100007 TITLE -.Kinetic energy and fragment mass distribution 2186000100008 for the spontaneous and photo-induced 2186000100009 fission of Pu-244.- 2186000100010 FACILITY (REAC,2BLGMOL) For Pu-241(N-Th,F) calibration runs 2186000100011 a collimated N-beam of the reactor BR1 2186000100012 of SCK/CEN was used 2186000100013 SAMPLE .Pu-244, enrichment 88 per cent,consisting of a 2186000100014 layer of 29 microgram/cm**2 Pu sandwiched 2186000100015 between two 30 microgram/cm**2 thick 2186000100016 polyimide backings with 20 microgram/cm**2 Au 2186000100017 .Pu-241, enrichment 91 per cent,used for calibration, 2186000100018 thickness 40 microgram/cm**2 2186000100019 .Targets were prepared by electrospraying 2186000100020 of Pu-acetate. 2186000100021 METHOD (COINC) 2186000100022 .Two heavy ion detectors were mounted symmetrically 2186000100023 on both sides of the fission target at 90 degrees 2186000100024 .Schmitt et Al. Calibration method (j,Pr,137,B837,65) 2186000100025 .Detector calibration constants of neiler et Al. 2186000100026 (J,Pr,149,894,66) 2186000100027 DETECTOR (SIBAR) Surface barrier detectors 2186000100028 ANALYSIS .The number of fission events was 7990 2186000100029 .For the calculation of the average total preneutron 2186000100030 kin.Energy the measured value of 2.30+-0.19 2186000100031 (C.J.Orth,j,nse,43,54,71) for the aver.Number 2186000100032 of emitted neutrons was used. 2186000100033 MONITOR .Each measurement was accompanied by a calibration 2186000100034 run with 20-MeV bremsstrahlung. These runs were 2186000100035 calibrated with Pu-241(N-Th,F) data. 2186000100036 PART-DET (FF) 2186000100037 ADD-RES .Photo-fission data of Pu-244 with 12,15,20 and 2186000100038 30 MeV bremsstrahlung. 2186000100039 .Comparison with the fissioning system Pu-240. 2186000100040 CORRECTION .For the contamination of Pu-244(sf) with Pu-240(sf) 2186000100041 and Pu-242(sf) data, 2186000100042 .Calculated to be 0.5% and 3.4%, respectively. 2186000100043 ERR-ANALYS (DATA-ERR) .Given uncertainties are the root-mean- 2186000100044 square deviations for at least five experimental runs.2186000100045 STATUS (TABLE) Main reference, table 1. 2186000100046 HISTORY (19830502C) Bn. 2186000100047 (19830801E) 2186000100048 (20090401A) Date is corrected. BIB information added 2186000100049 Upper case to low case converted 2186000100050 ENDBIB 48 0 2186000100051 NOCOMMON 0 0 2186000100052 ENDSUBENT 51 0 2186000199999 SUBENT 21860002 20090401 22112186000200001 BIB 2 4 2186000200002 REACTION 1(94-PU-244(0,F),PRE,AKE,LF+HF) Aver.Kin.Energy 2186000200003 2(94-PU-244(0,F),SEC,AKE,LF+HF) 2186000200004 HISTORY (20090401A) REACTION pt.2 SF5=SEC added. 2186000200005 SF7 changed to LF+HF 2186000200006 ENDBIB 4 0 2186000200007 NOCOMMON 0 0 2186000200008 DATA 4 1 2186000200009 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 2186000200010 MEV MEV MEV MEV 2186000200011 1.8179E+02 3.E-01 1.8008E+02 3.E-01 2186000200012 ENDDATA 3 0 2186000200013 ENDSUBENT 12 0 2186000299999 SUBENT 21860003 20090401 22112186000300001 BIB 2 5 2186000300002 REACTION 1(94-PU-244(0,F),PRV,AP,LF) Provisional aver. light mass2186000300003 2(94-PU-244(0,F),PRV,AP,HF) Provisional aver. heavy mass2186000300004 3(94-PU-244(0,F),PRE,AP,LF) Pre-N aver. light mass 2186000300005 4(94-PU-244(0,F),PRE,AP,HF) Pre-N aver. heavy mass 2186000300006 HISTORY (20090401A) REACTION pts. 1, 2 SF5 PRV added. 2186000300007 ENDBIB 5 0 2186000300008 NOCOMMON 0 0 2186000300009 DATA 8 1 2186000300010 DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3DATA-ERR 32186000300011 DATA 4DATA-ERR 4 2186000300012 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 2186000300013 NO-DIM NO-DIM 2186000300014 1.0644E+02 1.9E-01 1.3756E+02 1.9E-01 1.0596E+02 1.9E-012186000300015 1.3804E+02 1.9E-01 2186000300016 ENDDATA 6 0 2186000300017 ENDSUBENT 16 0 2186000399999 ENDENTRY 3 0 2186099999999