/*===================================================================*/ /* NRDF D1662 Data No.10 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,10; 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,10; /* 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=A-DSTRN'72'; /* '72' 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=86MEV; BEAM-INTNSTY=[100PNA; DET-SYS=(MCPLT'73',SSD'74',PPAC'75'); /* '73' Used as ToF telescope at theta(lab)=60 deg. */ /* '74' To measure kinetic energies of fission fragments, 0.3 msr /* '75' 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,10; INC-ENGY-LAB=86MEV; EMT=X'76'; /* '76' Fission fragments */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; A-MIN A-MAX YLD DELTA-YLD'77' (NODIM) (NODIM) (%) (%) 60 61 1.000E-02 +-4.740E-03 62 63 8.175E-03 +-4.250E-03 64 65 1.000E-02 +-4.760E-03 66 67 1.000E-02 +-4.740E-03 68 69 2.900E-02 +-7.935E-03 70 71 0.039 +-9.270E-03 72 73 0.061 +-0.012 74 75 0.122 +-0.016 76 77 0.183 +-0.02 78 79 0.27 +-0.024 80 81 0.451 +-0.032 82 83 0.645 +-0.038 84 85 0.901 +-0.045 86 87 1.18 +-0.051 88 89 1.46 +-0.057 90 91 1.752 +-0.062 92 93 2.185 +-0.069 94 95 2.443 +-0.073 96 97 2.711 +-0.077 98 99 3.203 +-0.084 100 101 3.588 +-0.089 102 103 4.098 +-0.095 104 105 4.348 +-0.098 106 107 4.949 +-0.105 108 109 5.231 +-0.108 110 111 5.39 +-0.109 112 113 5.7 +-0.112 114 115 5.435 +-0.11 116 117 5.567 +-0.111 118 119 5.147 +-0.107 120 121 4.684 +-0.102 122 123 4.295 +-0.097 124 125 3.831 +-0.092 126 127 3.44 +-0.087 128 129 3.164 +-0.084 130 131 2.64 +-0.076 132 133 2.351 +-7.200E-02 134 135 1.900E+00 +-6.500E-02 136 137 1.527E+00 +-5.800E-02 138 139 1.301E+00 +-5.400E-02 140 141 1.089E+00 +-4.900E-02 142 143 8.090E-01 +-4.200E-02 144 145 6.140E-01 +-3.700E-02 146 147 0.404 +-0.03 148 149 3.290E-01 +-2.700E-02 150 151 1.920E-01 +-2.100E-02 152 153 1.390E-01 +-1.800E-02 154 155 8.000E-02 +-1.300E-02 156 157 4.400E-02 +-1.000E-02 158 159 3.000E-02 +-8.205E-03 \END; /*===================================================================*/ |