/*===================================================================*/ /* NRDF D1662 Data No.13 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,13; 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,13; /* 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'90'; /* '90' 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=85MEV; BEAM-INTNSTY=[100PNA; DET-SYS=(MCPLT'91',SSD'92',PPAC'93'); /* '91' Used as ToF telescope at theta(lab)=60 deg. */ /* '92' To measure kinetic energies of fission fragments, 0.3 msr /* '93' 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,13; INC-ENGY-LAB=85MEV; EMT=X'94'; /* '94' Fission fragments */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; A-MIN A-MAX YLD DELTA-YLD'95' (NODIM) (NODIM) (%) (%) 68 69 3.735E-03 +-3.855E-03 70 71 0.011 +-6.700E-03 72 73 0.126 +-0.022 74 75 0.062 +-0.016 76 77 0.109 +-0.021 78 79 0.199 +-0.028 80 81 0.489 +-0.044 82 83 0.616 +-0.049 84 85 0.906 +-0.06 86 87 1.272 +-0.071 88 89 1.757 +-0.084 90 91 1.896 +-0.087 92 93 2.421 +-0.098 94 95 2.477 +-0.099 96 97 2.699 +-0.104 98 99 3.24 +-0.113 100 101 3.697 +-0.121 102 103 4.003 +-0.126 104 105 4.715 +-0.137 106 107 4.786 +-0.138 108 109 5.494 +-0.148 110 111 5.383 +-0.146 112 113 5.426 +-0.147 114 115 5.399 +-0.146 116 117 5.291 +-0.145 118 119 5.283 +-0.145 120 121 4.691 +-0.137 122 123 4.444 +-0.133 124 125 3.669 +-0.121 126 127 3.363 +-0.116 128 129 2.978 +-0.109 130 131 2.85 +-0.106 132 133 2.318 +-9.600E-02 134 135 2.043E+00 +-9.000E-02 136 137 1.686E+00 +-8.200E-02 138 139 1.344E+00 +-7.300E-02 140 141 9.700E-01 +-6.200E-02 142 143 7.120E-01 +-5.300E-02 144 145 4.690E-01 +-4.300E-02 146 147 0.246 +-0.031 148 149 1.750E-01 +-2.600E-02 150 151 1.310E-01 +-2.300E-02 152 153 7.200E-02 +-1.700E-02 154 155 4.900E-02 +-1.400E-02 156 157 2.100E-02 +-9.065E-03 158 159 3.420E-03 +-3.685E-03 \END; /*===================================================================*/ |