/*===================================================================*/ /* NRDF D1847 Data No.1 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,1; D#=D1847; TITLE=/Production of 7Be from proton bombardment of light elements/; ATH=(T.INOUE'1', S.TANAKA'1'); INST-ATH=(2JPNINS'1'); /* '1' Institute for Nuclear Study */ REF=JIN; VLP=38(1976)1425; RCTS=(9BE(P,7BE)X, B(P,7BE)X, 999N(P,7BE)X, 16O(P,7BE)X); PHQS=XSECTN; /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,1; /* 2003-10-31 : Converted, Data converted from EXFOR O0565 */ PHQ=XSECTN; BAC=SELF; POL-TGT=0%; ALGN-TGT=0%; POL-PRJ=0%; DET-PARTCL=GAMMA'2'; /* '2' Delayed gamma (478 keV) from 7Be (Half-life=53.6 day) is measured. Abundance of this decay mode is 0.103. */ COINC=NO; ANT-COINC=NO; DET-SYS=(GE(LI),NAI'3'); /* '3' Used for measurement after chemical separation */ /* Experimental Method: - Beam current integrated (Beam current was measured by a 100% feed-back type current integrator. The uncertainty in the beam current integration was estimated to be 3-10%.) - Gamma ray spectrometry (The activity of 7Be was measured more than two weeks after irradiation, when the short-lived activities had been decayed out. No radioactive impurities were observed in the gamma-spectra.) - Chemical separation (Chemical separation of beryllium was applied to a few targets in each run to eliminate a possible interference of other activities and obtain the absolute cross sections.) RCT=9BE(P,7BE)X; ENR=>98%; CHM=ELM; PHYS-FORM=SLD'4'; /* '4' Plate */ THK-TGT=176[189MG/CM**2'5'; /* '5' Target was thick enough to be able to neglect the recoil loss of 7Be from the target. Cross section below 22 MeV may actually be attributed only the (p,t) reaction. */ ACC=CYC; INST-ACC=2JPNTOK'6'; /* '6' INSJ cyclotron operating in the FM mode. The energy of the incident protons was 51.8+-0.2 MeV. */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,1; SYS-ERR=(3%'7',10%'8'); /* '7' Low limit of the uncertainty in the beam current interagtion. */ /* '8' High limit of the uncertainty in the beam current integration, */ EMT=GAMMA'9'; /* '9' Delayed Gammas */ DELTA-XSECTN=2.%'10'; /* '10' Data-point reader uncertainty */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; INC-ENGY-LAB DELTA-INC-ENGY-LAB'11' XSECTN DELTA-XSECTN'12' (MEV) (MEV) (MB) (%) 14.8 +-1.3 4.88 +-4. 18.9 +-2.3 6.6 +-21. 23. +-1.4 6.39 +-X 24.9 +-1.5 8.2 +-X 27.7 +-X 11.05 +-X 30.8 +-1.1 13. +-19. 33.52 +-X 13.28 +-X 36.08 +-X 14.29 +-X 38.3 +-X 15. +-X 40.86 +-X 15. +-17. 42.39 +-X 14.59 +-X 44.61 +-X 14.75 +-X 47.5 +-X 14. +-X \END; /*===================================================================*/ |