/*===================================================================*/ /* NRDF D1662 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; 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,2; /* 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'20'; /* '20' 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=98MEV; BEAM-INTNSTY=[100PNA; DET-SYS=(MCPLT'21',SSD'22',PPAC'23'); /* '21' Used as ToF telescope at theta(lab)=60 deg. */ /* '22' To measure kinetic energies of fission fragments, 0.3 msr /* '23' 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,2; INC-ENGY-LAB=98MEV; EMT=X'24'; /* '24' Fission fragments */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; DATA1'25' YLD DELTA-YLD'26' (UNIT1) (%) (%) 0.02 0.014 +-7.900E-03 0.021 1.400E-02 +-7.900E-03 0.022 6.400E-02 +-1.700E-02 0.023 0.082 +-0.019 0.024 0.123 +-0.024 0.025 0.251 +-0.034 0.026 0.411 +-0.043 0.027 0.74 +-0.058 0.028 1.024 +-0.068 0.029 1.645 +-0.087 0.03 2.144 +-0.099 0.031 2.546 +-0.108 0.032 3.277 +-0.122 0.033 4.484 +-0.143 0.034 5.211 +-0.154 0.035 5.988 +-0.165 0.036 6.17 +-0.168 0.037 6.902 +-0.178 0.038 7.13 +-0.181 0.039 7.084 +-0.18 0.04 6.993 +-0.179 0.041 6.353 +-0.17 0.042 5.896 +-0.164 0.043 5.028 +-0.152 0.044 4.374 +-0.141 0.045 3.702 +-0.13 0.046 3.049 +-0.118 0.047 2.678 +-0.111 0.048 1.947 +-0.094 0.049 1.476 +-0.082 0.05 0.987 +-0.067 0.051 0.846 +-0.062 0.052 0.585 +-0.052 0.053 0.375 +-0.041 0.054 0.178 +-0.029 0.055 0.123 +-0.024 0.056 0.055 +-1.600E-02 0.057 1.800E-02 +-9.150E-03 0.058 1.400E-02 +-7.900E-03 0.059 1.400E-02 +-7.900E-03 0.06 4.550E-03 +-4.550E-03 \END; /*===================================================================*/ |