/*===================================================================*/ /* NRDF D1855 Data No.16 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,16; D#=D1855; TITLE=/Isomeric yield ratios of fission products in the system of 24 MeV proton-induced fission of 238U/; ATH=(M.TANIKAWA'1', H.KUDO'1', H.SUNAOSHI'2', M.WADA'2', T.SHINOZUKA'2', M.FUJIOKA'2'); INST-ATH=(2JPNNII'1', 2JPNTOH'2'); /* '1' Department of Chemistry, Faculty of Science */ /* '2' Cyclotron and Radioisotope Center */ REF=ZP/A; VLP=347(1993)53; RCTS=(238U(P,FISSN)82AS, 238U(P,FISSN)83SE, 238U(P,FISSN)84BR, 238U(P,FISSN)90RB, 238U(P,FISSN)97Y, 238U(P,FISSN)99NB, 238U(P,FISSN)102TC, 238U(P,FISSN)108RH, 238U(P,FISSN)116AG, 238U(P,FISSN)119CD, 238U(P,FISSN)121CD, 238U(P,FISSN)116IN, 238U(P,FISSN)120IN, 238U(P,FISSN)122IN, 238U(P,FISSN)124IN, 238U(P,FISSN)126IN, 238U(P,FISSN)128IN, 238U(P,FISSN)128SN, 238U(P,FISSN)130SN, 238U(P,FISSN)128SB, 238U(P,FISSN)130SB, 238U(P,FISSN)132SB, 238U(P,FISSN)130I, 238U(P,FISSN)132I, 238U(P,FISSN)134I, 238U(P,FISSN)136I, 238U(P,FISSN)135XE, 238U(P,FISSN)138CS, 238U(P,FISSN)146LA, 238U(P,FISSN)148PR); PHQS=XSECTN-RATIO; /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,16; /* 2003-10-28 : Converted, Data converted from EXFOR O0539 */ RTY=FISSN; PHQ=XSECTN-RATIO; CHM=ELM; PHYS-FORM=SLD; THK-TGT=XMG/CM**2'3'; /* '3' Target consists of the two self-support foils of depleted uranium with a thickness of 20 mg/cm2. The target foils were separated about 1 cm from each other in the target chamber. */ BAC=SELF; POL-TGT=0%; ALGN-TGT=0%; ACC=CYC'4'; /* '4'Isochronous cyclotron, AVF cyclotron */ INST-ACC=2JPNTOH'5'; /* '5' Cyclotron and Radioisotope Center */ INC-ENGY-LAB=24MEV'6'; /* '6' The energy of the incident proton was 24 MeV at the point between the two target foils. */ DELTA-INC-ENGY-LAB=0.2MEV'7'; /* '7' The total amount of the energy loss in the uranium target foils was about 0.4 MeV, which means that the actual bombarding energy was 24+-0.2 MeV. */ BEAM-INTNSTY=0.2UA'8'; /* '8' Beam current was monitored by a Faraday cup equipped with a current integrator. */ POL-PRJ=0%; COINC=NO; ANT-COINC=NO; DET-SYS=GE'9'; /* '9' High pure Ge (HPGe) detectors. */ ERS-DET=XKEV'10'; /* '10' 2.1 and 2.8 keV for 1332 keV gamma-ray of 60Co for the detector-1 and -2, respectively. */ CALB-DET=/ Calibration of gamma-ray energy and detection efficiency for the energy range from 50 to about 3000 keV were performed using a set of gamma reference sources of Amersham Co.Ltd. (241Am, 137Cs, 133Ba, 60Co, 57Co, 54Mn, and 22Na) and handmade sources of 152Eu and 56Co. /; ANL=X'11'; /* '11' Simple one parameter model [D.G. Madland, T.R. England, Nucl. Sci. Eng. 64(1977)859] */ /* Experimental Method: - Separation by mass-separator (Mass calibration for the isotope separator was made at A=16, 32 and mass number of interest in each experimental run. The obtained mass resolution M/Delta-M was about 150 at A=140, which is a rather small value compared to the ordinary mass separator.) - Single target irradiation RCT=238U(P,FISSN)126IN; DET-PARTCL=(GAMMA'102',GAMMA'103'); /* '102' Delayed gamma (969.6 keV) from 126IN (ground state) (Half-life=1.50 sec) is measured. Abundance of this decay mode is 0.149.Jpi=3+, ENSDF assigns parity=(+1) to this state. */ /* '103' Delayed gamma (111.8 keV) from 126IN (metastable state) (Half-life=1.45 sec) is measured. Abundance of this decay mode is 0.88.Jpi=8- */ /* Analysis: - Decay curve analysis (Growth and decay analysis) /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,16; INC-ENGY-LAB=24MEV; EMT-1=GAMMA'104'; /* '104' Delayed Gammas */ EMT-2=GAMMA'105'; /* '105' Delayed Gammas */ RSD=126IN; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; XSECTN-RATIO'106' DELTA-XSECTN-RATIO'106,107' (NODIM) (NODIM) 1.14 +-0.10 \END; /*===================================================================*/ |