/*===================================================================*/ /* NRDF D1659 Data No.4 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,4; D#=D1659; TITLE=/Two deformation paths in proton-induced fission of 232Th/; PURPOSE=/Accurate measurements of complementary fission fragmentvelocities in the proton-induced fission of 232th/; ATH=(Y.NAGAME'1', I.NISHINAKA'1', K.TSUKADA'1', Y.OURA'1', S.ICHIKAWA'1', H.IKEZOE'1', Y.L.ZHAO'2', K.SUEKI'2', H.NAKAHARA'2', M.TANIKAWA'3', T.OHTSUKI'4', H.KUDO'5', Y.HAMAJIMA'6', K.TAKAMIYA'7', Y.H.CHUNG'8'); INST-ATH=(2JPNJAE'1', 2JPNTMU'2', 2JPNTOK'3', 2JPNTOH'4', 2JPNNII'5', 2JPNJPN'6', 2JPNOSA'7', 3KORKOR'8'); /* '2' Department of Chemistry */ /* '3' Department of Chemistry */ /* '4' Laboratory of Nuclear Science */ /* '5' Department of Chemistry */ /* '6' Department of Chemistry, Kanazawa University, Kanazawa */ /* '7' Department of Chemistry */ /* '8' Department of Chemistry, Hallym University, Chuncheon */ REF=PL/B; VLP=387(1996)26; RCTS=232TH(P,FISSN); PHQS=(A-DSTRN'9', AVER-KIN-ENGY'10', ENGY-SPEC'11', ENGY-SPEC'12', ENGY-SPEC'13', ENGY-SPEC'14', ENGY-SPEC'15'); /* '9' Heavy fragment mass distribution */ /* '10' average total kinetic energy */ /* '11' total kinetic energy distribution (A=126) */ /* '12' total kinetic energy distribution (A=128) */ /* '13' total kinetic energy distribution (A=130) */ /* '14' total kinetic energy distribution (A=132) */ /* '15' total kinetic energy distribution (A=134) */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,4; /* 2003-11-22 : Converted, Data converted to EXFOR E1659 and EXFOR O0383. */ RTY=FISSN; CHM=ELM; PHYS-FORM=SLD; THK-TGT=0.07MG/CM**2; BAC=C; THK-BAC=0.02MG/CM**2; POL-TGT=0%; ALGN-TGT=0%; ACC=VDGT; INST-ACC=2JPNJAE; BEAM-INTNSTY=500[800NA; POL-PRJ=0%; DET-PARTCL=X'16'; /* '16' Fission Fragments */ COINC=NO; ANT-COINC=NO; DET-SYS=(MCPLT'17',SBD'18',MCPLT'19',PPAC'20'); /* '17' Placed at theta(lab)=50deg. Used as start and stop ToF (ToF1) detectors with carbon foil (30-micro gram/cm2). The flight path and solid angle are 55 cm and 0.17 msr, respectively. */ /* '18' Placed behind the stop MCPD. Used for stop and energy signals. */ /* '19' Placed at theta(lab)=130deg. Used to deliver start ToF signal (ToF2) to detect complementary fragments of ToF1. The flight path and solid angle are 50 cm and 32 msr, respectively. */ /* '20' Used to deliver stop signal of ToF (ToF2). */ ERS-DET=<2.5MEV'21'; /* '21' for total kinetic energy */ CALB-DET=/ Velocity calibration was performed using the 240 MeV 127I beam to bombard thin (70-100 micro-gram/cm2) calibration targets, natAg, natIn, natSb, and 209Bi. Each target was evaporated on 30 micro-gram/cm2 thick carbon foils. The recoil nuclei and the elastically scattered 127I ions were detected with the present ToF system. /; /* Experimental Method: - Time-of-flight (To measure fission fragment velocities) - Beam current integrated (The average beam current was 500-800 nA.) RCT=232TH(P,FISSN); PHQ=AVER-KIN-ENGY'31'; /* '31' average total kinetic energy */ INC-ENGY-LAB=12.0MEV; /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,4; INC-ENGY-LAB=12.0MEV; EMT=X'32'; /* '32' Fission fragments */ DELTA-AVER-KIN-ENGY=3.0%'33'; /* '33' Data-point reader uncertainty */ DELTA-DATA1=0.05MEV; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; A AVER-KIN-ENGY'34' DATA1'35' (NODIM) (MEV) (MEV) 115. 158.4 9.77 117. 158.9 9.77 119. 159. 9.96 121. 159.1 10.24 123. 159.2 10.07 126. 161.1 11. 128. 163.1 12.49 130. 166.8 12.82 132. 170.4 12.61 134. 172.2 12.04 136. 171.9 11.33 138. 170.7 10.48 140. 169.1 9.7 142. 167.2 8.99 145. 165.6 8.67 147. 164. 8.25 149. 162.4 8.18 151. 160.2 8.36 153. 158.1 8.51 155. 155.9 8.23 157. 153.5 8.12 160. 149.8 X \END; /*===================================================================*/ |