/*===================================================================*/ /* NRDF D1662 Data No.3 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,3; 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,3; /* 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=DATA'27'; /* '27' 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=83MEV; BEAM-INTNSTY=[100PNA; DET-SYS=(MCPLT'28',SSD'29',PPAC'30'); /* '28' Used as ToF telescope at theta(lab)=60 deg. */ /* '29' To measure kinetic energies of fission fragments, 0.3 msr /* '30' 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,3; INC-ENGY-LAB=83MEV; EMT=X'31'; /* '31' Fission fragments */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; DATA1'32' YLD DELTA-YLD'33' (UNIT1) (%) (%) 0.023 0.022 +-0.022 0.024 0.022 +-0.022 0.025 0.089 +-0.044 0.026 0.199 +-0.067 0.027 0.31 +-0.083 0.028 0.82 +-0.135 0.029 1.24 +-0.166 0.03 1.795 +-0.199 0.031 2.835 +-0.251 0.032 3.59 +-0.282 0.033 4.34 +-0.31 0.034 4.72 +-0.324 0.035 6.45 +-0.378 0.036 5.9 +-0.362 0.037 6.55 +-0.381 0.038 7.05 +-0.396 0.039 7.35 +-0.404 0.04 6.9 +-0.391 0.041 5.8 +-0.359 0.042 5.85 +-0.361 0.043 4.83 +-0.327 0.044 4.365 +-0.311 0.045 3.635 +-0.283 0.046 3.035 +-0.26 0.047 2.68 +-0.244 0.048 2.235 +-0.223 0.049 1.95 +-0.208 0.05 1.64 +-0.191 0.051 1.15 +-0.16 0.052 0.755 +-0.129 0.053 0.555 +-0.111 0.054 0.222 +-0.07 0.055 0.133 +-0.055 0.056 0.022 +-2.200E-02 0.057 2.200E-02 +-2.200E-02 \END; /*===================================================================*/ |