/*===================================================================*/ /* NRDF D1662 Data No.4 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,4; D#=D1662; TITLE=/Nuclear fission of neutron-deficient protactinium nuclides/; PURPOSE=/To study the degree of the contribution of asymmetric massdivision in the low energy fission of neutron-deficient lightactinides by observing yields of fission products in detail/; ATH=(I.NISHINAKA'1', Y.NAGAME'1', K.TSUKADA'1', H.IKEZOE'1', K.SUEKI'2', H.NAKAHARA'2', M.TANIKAWA'3', T.OHTSUKI'4'); INST-ATH=(2JPNJAE'1', 2JPNTMU'2', 2JPNTOK'3', 2JPNTOH'4'); /* '2' Faculty of Science */ /* '3' School of Science */ /* '4' Laboratory of Nuclear Science */ REF=PR/C; VLP=56(1997)891; RCTS=209BI(16O,FISSN), 209BI(18O,FISSN); PHQS=(DATA'5', DATA'6', A-DSTRN'7', A-DSTRN'8', A-DSTRN'9', A-DSTRN'10', A-DSTRN'11'); /* '5' velocity distributions of fission fragments */ /* '6' kinetic energy distribution */ /* '7' Secondary (post neutron emission) fragment mass distribution /* '8' Primary (pre neutron emission) fragment mass distribution */ /* '9' Cummulative mass yields of secondary fragments */ /* '10' Independent mass yields of secondary fragments */ /* '11' Independent element yields of secondary fragments */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,4; /* 2003-08-19 : Converted, Data converted to EXFOR E1662 */ RTY=FISSN; ENR=X%; CHM=ELM; PHYS-FORM=SLD; POL-TGT=0%; ALGN-TGT=0%; DET-PARTCL=X'12'; /* '12' Fission Fragments */ COINC=NO; ANT-COINC=NO; RCT=209BI(18O,FISSN); PHQ=DATA'34'; /* '34' velocity distributions of fission fragments */ THK-TGT=[0.04MG/CM**2; BAC=C; THK-BAC=0.01MG/CM**2; ACC=VDGT; INST-ACC=2JPNJAE; INC-ENGY-LAB=85MEV; BEAM-INTNSTY=[100PNA; DET-SYS=(MCPLT'35',SSD'36',PPAC'37'); /* '35' Used as ToF telescope at theta(lab)=60 deg. */ /* '36' To measure kinetic energies of fission fragments, 0.3 msr /* '37' Set at theta(lab)=99 deg. Solid angle was 80 msr. */ CALB-DET=/ Calibrations of the time for the ToF system and the energy for the SSD were performed by measuring the elastically scattered 16O and 18O ions from a 209Bi target, and also the particles recoiling out from thin targets, natural Ag, natural In, natural Sb by bombardment of the 350 MeV 127I beam. /; /* Experimental Method: - Time-of-flight (to obtain velocity distribution) /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,4; INC-ENGY-LAB=85MEV; EMT=X'38'; /* '38' Fission fragments */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; DATA1'39' YLD DELTA-YLD'40' (UNIT1) (%) (%) 0.021 3.600E-03 +-3.600E-03 0.022 3.600E-03 +-3.600E-03 0.024 0.036 +-0.011 0.025 0.141 +-0.023 0.026 0.235 +-0.029 0.027 0.422 +-0.039 0.028 0.823 +-0.055 0.029 1.282 +-0.068 0.03 2.015 +-0.085 0.031 2.881 +-0.102 0.032 3.719 +-0.116 0.033 4.405 +-0.126 0.034 5.416 +-0.14 0.035 5.957 +-0.147 0.036 6.932 +-0.158 0.037 7.51 +-0.165 0.038 7.473 +-0.164 0.039 7.221 +-0.161 0.04 7.04 +-0.159 0.041 6.246 +-0.15 0.042 5.921 +-0.146 0.043 4.946 +-0.134 0.044 4.08 +-0.121 0.045 3.235 +-0.108 0.046 2.968 +-0.104 0.047 2.448 +-0.094 0.048 2.036 +-0.086 0.049 1.628 +-0.077 0.05 1.141 +-0.064 0.051 0.798 +-0.054 0.052 0.531 +-0.044 0.053 0.264 +-0.031 0.054 0.155 +-0.024 0.055 0.051 +-0.014 0.056 0.029 +-0.01 0.057 7.200E-03 +-5.100E-03 0.059 3.600E-03 +-3.600E-03 \END; /*===================================================================*/ |