/*===================================================================*/ /* NRDF D1662 Data No.9 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,9; 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,9; /* 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'66'; /* '66' Secondary (post 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=85MEV; BEAM-INTNSTY=[100PNA; DET-SYS=(MCPLT'67',SSD'68',PPAC'69'); /* '67' Used as ToF telescope at theta(lab)=60 deg. */ /* '68' To measure kinetic energies of fission fragments, 0.3 msr /* '69' 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,9; INC-ENGY-LAB=85MEV; EMT=X'70'; /* '70' Fission fragments */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; A-MIN A-MAX YLD DELTA-YLD'71' (NODIM) (NODIM) (%) (%) 66 67 3.745E-03 +-3.865E-03 68 69 7.490E-03 +-5.465E-03 70 71 0.033 +-0.012 72 73 0.062 +-0.016 74 75 0.112 +-0.021 76 77 0.255 +-0.032 78 79 0.558 +-0.047 80 81 0.697 +-0.053 82 83 1.096 +-0.066 84 85 1.454 +-0.076 86 87 1.96 +-0.088 88 89 2.239 +-0.094 90 91 2.57 +-0.101 92 93 2.733 +-0.104 94 95 3.124 +-0.112 96 97 3.694 +-0.121 98 99 4.188 +-0.129 100 101 4.678 +-0.137 102 103 4.985 +-0.141 104 105 5.554 +-0.149 106 107 5.67 +-0.15 108 109 5.59 +-0.149 110 111 5.662 +-0.15 112 113 5.435 +-0.147 114 115 5.315 +-0.146 116 117 4.881 +-0.139 118 119 4.439 +-0.133 120 121 3.773 +-0.123 122 123 3.204 +-0.113 124 125 3.088 +-0.111 126 127 2.682 +-0.103 128 129 2.247 +-0.095 130 131 2.112 +-0.092 132 133 1.662 +-8.100E-02 134 135 1.311E+00 +-7.200E-02 136 137 9.920E-01 +-6.300E-02 138 139 6.770E-01 +-5.200E-02 140 141 4.900E-01 +-4.400E-02 142 143 2.750E-01 +-3.300E-02 144 145 1.750E-01 +-2.600E-02 146 147 0.159 +-0.025 148 149 7.000E-02 +-1.700E-02 150 151 4.500E-02 +-1.300E-02 152 153 3.500E-02 +-1.200E-02 154 155 3.425E-03 +-3.695E-03 156 157 3.425E-03 +-3.695E-03 \END; /*===================================================================*/ |