/*===================================================================*/ /* NRDF D1662 Data No.1 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,1; 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,1; /* 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(16O,FISSN); PHQ=DATA'13'; /* '13' 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=86MEV; BEAM-INTNSTY=[100PNA; DET-SYS=(MCPLT'14',SSD'15',PPAC'16'); /* '14' Used as ToF telescope at theta(lab)=60 deg. */ /* '15' To measure kinetic energies of fission fragments, 0.3 msr /* '16' 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,1; INC-ENGY-LAB=86MEV; EMT=X'17'; /* '17' Fission fragments */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; DATA1'18' YLD DELTA-YLD'19' (UNIT1) (%) (%) 0.02 0.01 +-4.500E-03 0.021 6.050E-03 +-3.500E-03 0.022 1.400E-02 +-5.300E-03 0.023 0.054 +-0.01 0.024 0.115 +-0.015 0.025 0.147 +-0.017 0.026 0.32 +-0.025 0.027 0.645 +-0.036 0.028 0.939 +-0.043 0.029 1.48 +-0.055 0.03 2.091 +-0.065 0.031 2.815 +-0.075 0.032 3.68 +-0.086 0.033 4.444 +-0.095 0.034 5.308 +-0.103 0.035 6.274 +-0.112 0.036 6.354 +-0.113 0.037 7.44 +-0.122 0.038 7.601 +-0.124 0.039 7.098 +-0.119 0.04 7.158 +-0.12 0.041 6.274 +-0.112 0.042 5.51 +-0.105 0.043 4.967 +-0.1 0.044 4.243 +-0.092 0.045 3.398 +-0.083 0.046 2.715 +-0.074 0.047 2.413 +-0.07 0.048 1.8 +-0.06 0.049 1.522 +-0.055 0.05 1.211 +-0.049 0.051 0.738 +-0.039 0.052 0.527 +-0.033 0.053 0.298 +-0.024 0.054 0.187 +-0.019 0.055 0.115 +-0.015 0.056 0.042 +-9.200E-03 0.057 1.800E-02 +-6.050E-03 0.058 4.000E-03 +-2.850E-03 0.059 6.050E-03 +-3.500E-03 0.06 2.000E-03 +-2.000E-03 0.061 4.000E-03 +-2.850E-03 0.062 2.000E-03 +-2.000E-03 0.064 4.000E-03 +-2.850E-03 0.065 2.000E-03 +-2.000E-03 0.066 2.000E-03 +-2.000E-03 0.067 2.000E-03 +-2.000E-03 0.068 2.000E-03 +-2.000E-03 0.069 2.000E-03 +-2.000E-03 \END; /*===================================================================*/ |