/*===================================================================*/ /* NRDF D1662 Data No.12 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,12; 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,12; /* 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=A-DSTRN'84'; /* '84' Primary (pre neutron emission) fragment mass distribution THK-TGT=[0.04MG/CM**2; BAC=C; THK-BAC=0.01MG/CM**2; ACC=VDGT; INST-ACC=2JPNJAE; INC-ENGY-LAB=83MEV; BEAM-INTNSTY=[100PNA; DET-SYS=(MCPLT'85',SSD'86',PPAC'87'); /* '85' Used as ToF telescope at theta(lab)=60 deg. */ /* '86' To measure kinetic energies of fission fragments, 0.3 msr /* '87' 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,12; INC-ENGY-LAB=83MEV; EMT=X'88'; /* '88' Fission fragments */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; A-MIN A-MAX YLD DELTA-YLD'89' (NODIM) (NODIM) (%) (%) 72 73 2.300E-02 +-2.400E-02 74 75 1.360E-01 +-5.800E-02 76 77 1.590E-01 +-6.300E-02 78 79 2.730E-01 +-8.200E-02 80 81 0.795 +-1.390E-01 82 83 0.91 +-0.15 84 85 1.18 +-0.17 86 87 1.475 +-0.19 88 89 1.81 +-0.211 90 91 2.06 +-0.225 92 93 2.395 +-0.243 94 95 2.57 +-0.251 96 97 3.155 +-0.278 98 99 3.015 +-0.272 100 101 3.66 +-0.3 102 103 4.035 +-0.315 104 105 4.925 +-0.347 106 107 4.565 +-0.334 108 109 4.845 +-0.345 110 111 4.39 +-0.328 112 113 5.65 +-0.372 114 115 5.05 +-0.352 116 117 4.795 +-0.343 118 119 4.47 +-0.331 120 121 4.33 +-0.326 122 123 3.99 +-0.313 124 125 3.565 +-0.296 126 127 3.075 +-0.275 128 129 3.115 +-0.277 130 131 2.625 +-0.254 132 133 2.515 +-0.248 134 135 2.555 +-0.251 136 137 1.805 +-0.211 138 139 2.105 +-0.228 140 141 1.21 +-0.172 142 143 0.645 +-1.260E-01 144 145 8.600E-01 +-1.460E-01 146 147 4.090E-01 +-1.000E-01 148 149 3.660E-01 +-9.500E-02 150 151 2.140E-01 +-7.300E-02 152 153 2.340E-01 +-7.600E-02 154 155 2.100E-02 +-2.300E-02 \END; /*===================================================================*/ |