/*===================================================================*/ /* NRDF D1854 Data No.9 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,9; D#=D1854; TITLE=/Production cross sections of Tritium in high energy nuclear reactions with 12 GeV protons/; ATH=(M.NOGUCHI'1', T.MIURA'1', K.KONDO'1', T.SUZUKI'1', Y.OKI'1', M.TAKASAKI'1', K.H.TANAKA'1', M.IEIRI'1'); INST-ATH=(2JPNKEK'1'); REF=ARI; VLP=42(1991)577; RCTS=(AL(P,T)X, CO(P,T)X, CU(P,T)X, NB(P,T)X, AG(P,T)X, IN(P,T)X, SN(P,T)X, AU(P,T)X, PB(P,T)X); PHQS=XSECTN; /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,9; /* 2003-11-06 : Converted, Data converted from EXFOR O0538 */ PHQ=XSECTN; CHM=ELM; PHYS-FORM=SLD'2'; /* '2' Thin metal foil target. Each target consists of three stacked foils of the same thickness. A middle foil was used for counting and chemical assays, while the outer foils served to compensate for recoil loss. Each target was bundled together and placed in order of target atomic weight. */ POL-TGT=0%; ALGN-TGT=0%; ACC=SYN; INST-ACC=2JPNKEK; INC-ENGY-LAB=12GEV; BEAM-INTNSTY=[1.4e11PPS'3'; /* '3' Beam intensity was continuously monitored by a SEC (secondary emission chamber), which was calibrated by the activation method using the 27Al(p,3pn)24Na reaction. */ POL-PRJ=0%; DET-PARTCL=BETAN'4'; /* '4' Negative beta from 3H is measured.Tritium radio activity was measured at least 10 times for 30 min with a liquid scintillation counter or a low background scintillation counter. */ COINC=NO; ANT-COINC=NO; DET-SYS=(GE(LI)'5',SCT'6'); /* '5' To measure 24Na radioactivity in the Al foil */ /* '6' To measure radioactivity of tritium. Counting efficiency was determined by an auto-external standard method using standard tritium sources, to be about 22%. */ MONTR-RCT=/ 27AL(P,24NA)X /; /* Experimental Method: - Activation (Irradiation time was 37 min.) - Irradiation with external beam (Average intensity of proton beam was 1.4e+11 proton/sec.) - Chemical separation (Irradiated targets were stored in a refrigerator (about 6 deg), and the tritium analysis was carried out about three months after the bombardment. The irradiated foil was dissolved completely in acid. See Fig.1 of reference for the dissolution apparatus used in this experiment.) RCT=PB(P,T)X; THK-TGT=113MG/CM**2; /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,9; INC-ENGY-LAB=12GEV; EMT=BETAN; DATA1=8.1MB'23'; /* '23' Beam current was continuously monitored by a secondary emission chamber, which was calibrated by activation method using the shown monitor reaction. */ DELTA-DATA1=+-0.9MB; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; XSECTN DELTA-XSECTN'24' (MB) (MB) 649 +-92 \END; /*===================================================================*/ |