/* 2002-03-18: N.OTUKA 10 POINTS CHECK */ /* 2005-11-17: N.OTUKA "XSECTN-YIELD" in PHQ deleted DATA 4 "XSECTN-YIELD" -> "SIGMA" */ \\BIB,1[5; D#=D746; TITLE=/PROTON-INDUCED FISSION OF IRIDIUM/; ATH=(B.P.PATHAK'1,2,3',L.LESSARD'1,2',L.NIKKINEN'2',J.K.P.LEE'2'); /*@2@/; INST-ATH=(1CANMON'1',1CANMCG'2'); REF=PR/C; VLP=25(1982)2534; RCTS=191IR(P,FIS),193IR(P,FIS); PHQS=(A-DSTRN); \\EXP,1[5; RTY=(FISSN); ENR=NAT; CHM=ELM; PHYS-FORM=SLD; THK-TGT=8MG/CM**2; BAC=C; THK-BAC=28MG/CM**2; POL-TGT=NO; ALGN-TGT=NO; /*@3@*/ ACC=(SYNCYC); INST-ACC=1CANMCG; INC-ENGY-LAB=(68MEV,85MEV,100MEV); DELTA-INC-ENGY-LAB=XKEV; ERS-PRJ=XKEV; BEAM-INTNSTY=XA; POL-PRJ=NO; DET-PARTCL=(X'4'); /*@4@*/ /*@5@*/ PHQ=(A-DSTRN); \\DATA,1; INC-ENGY-LAB=62MEV; /*@6@*/ /*FIG.1-(1)*/ /* D746 FIG.1-(1) */ /* FOLLOWING DATA ARE TAKEN FROM GRAPH */ \DATA; A YIELD DELTA-YIELD (NODIM) (NODIM) (NODIM) 85.950 3.975E+01 +-0.190E+02 86.950 9.682E+01 +-0.164E+02 87.979 1.353E+02 +-0.161E+02 88.999 1.095E+02 +-0.120E+02 90.029 5.353E+01 +-0.124E+02 91.033 1.653E+01 +-0.606E+01 \END; \\DATA,2; INC-ENGY-LAB=80MEV; /*@6@*/ /*FIG.1-(2)*/ /* D746 FIG.1-(2) */ /* FOLLOWING DATA ARE TAKEN FROM GRAPH */ \DATA; A YIELD DELTA-YIELD (NODIM) (NODIM) (NODIM) 83.941 1.355E+01 +-0.814E+01 84.998 1.045E+02 +-0.177E+02 86.019 2.787E+02 +-XXXXXXXXX 87.014 4.892E+02 +-XXXXXXXXX 88.041 5.903E+02 +-XXXXXXXXX 89.038 3.707E+02 +-XXXXXXXXX 90.047 1.559E+02 +-0.113E+02 91.065 3.855E+01 +-0.388E+01 92.039 5.852E+00 +-0.136E+01 \END; \\DATA,3; INC-ENGY-LAB=95MEV; /*FIG.1-(3)*/ /* D746 FIG.1-(3) */ /* FOLLOWING DATA ARE TAKEN FROM GRAPH */ \DATA; A YIELD DELTA-YIELD (NODIM) (NODIM) (NODIM) 83.932 7.182E+01 +-0.183E+02 84.950 3.500E+02 +-0.489E+02 85.907 7.723E+02 +-XXXXXXXXX 86.936 1.102E+03 +-0.132E+03 87.961 8.775E+02 +-XXXXXXXXX 88.966 5.474E+02 +-XXXXXXXXX 90.025 2.699E+02 +-XXXXXXXXX 91.009 1.188E+02 +-XXXXXXXXX 92.048 5.279E+01 +-0.431E+01 \END; \\DATA,4; INC-ENGY-LAB-RANGE=62[95MEV; /*@6@/. /*FIG.2*/ /* D746 FIG.2 */ /* FOLLOWING DATA ARE TAKEN FROM GRAPH */ \DATA; INC-ENGY-LAB SIGMA (MEV) (MB) 62.478 3.786E-01 79.808 1.152E+00 94.890 2.907E+00 \END; /*@6@*/ \\DATA,5; INC-ENGY-LAB=60[100MEV; \DATA; INC-ENGY-LAB A'7' DELTA-A'7' DATA'8' DELTA-DATA'8' EXC-ENGY'9' DATA'10' DELTA-DATA'10' DATA'11' DELTA-DATA'11' (MEV) (NODIM) (NODIM) (NODIM) (NODIM) (MEV) (NODIM) (NODIM) (NODIM) (NODIM) 100 87.37 0.02 3.52 0.03 86 9.06 0.04 8.59 0.04 85 87.72 0.05 3.37 0.10 71 8.33 0.11 7.86 0.11 67 88.13 0.24 3.3 0.2 53 7.46 0.51 6.95 0.51 \END; /*@7@*/ \\END; @@2; '3' PRESENT ADDRESS: INSTITUTE OF OCCUPATIONAL HEALTH AND SAFETY, MCGIL L UNIVERSITY, MONTREAL, CANADA @@3; THE TARGETS WERE PREPARED BY DEPOSITING NATURAL IRIDIUM METAL POWDER ON ONE SIDE OF GRAPHITE DISKS, 12.6 MM IN DIAMETER AND 28 MG/CM**2 THICK. THE AVERAGE TARGET THICKNESS WAS 8 MG/CM**2. TWENTY-FIVE DISKS WERE US ED TO MAKE A TARGET ASSEMBLY. @@4; '4' RB ISOTOPES @@5; A MASS SPECTRUM OF RB ISOTOPES WERE MEASURED BY USING AN ON-LINE MASS S PECTROMETER FACILITY. @@6; THE INCIDENT ENERGY IS CORRECTED FOR ATTENUATION IN THE TARGET. @@7; '7' THE AVERAGE MASS OF THE RB FISSION FRAGMENTS '8' FWHM OF MASS '9' THE EXCITATION ENERGY OF THE FISSION FRAGMENTS ,E(F1)+E(F2) '10' THE AVERAGE TOTAL NUMBER OF NEUTRONS EMITTED PER FISSION EVENT,OBT AINED BY USING EQUAL SIGMA(F) FOR 191IR AND 193IR '11' THE AVERAGE TOTAL NUMBER OF NEUTRONS CORRECTED FOR RELATIVE SIGMA( F) @@;