/*===================================================================*/ /* NRDF D1576 Data No.5 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,5; D#=D1576; TITLE=/ Coulomb dissociation of 8B and the 7Be(p,gamma)8B reaction at low energies /; PURPOSE=/ To first establish the usefulness of the Coulomb dissociation method for studying the 7Be(p,gamma)8B reaction at lower energies. /; ATH=(T.MOTOBAYASHI'1', N.IWASA'1', Y.ANDO'1', M.KUROKAWA'1', H.MURAKAMI'1', J.RUAN'1', S.SHIMOURA'1', S.SHIRATO'1', N.INABE'2', M.ISHIHARA'2', T.KUBO'2', Y.WATANABE'2', M.GAI'3', R.H.FRANCE III'3', K.I.HAHN'3', Z.ZHAO'3', T.NAKAMURA'4', T.TERANISHI'4', Y.FUTAMI'5', K.FURUTAKA'6', TH.DELBAR'7'); INST-ATH=(2JPNRIK'1', 2JPNIPC'2', 1USAYAL'3', 2JPNTOK'4', 2JPNTSU'5', 2JPNTIT'6', 2BLGLVN'7'); /* '1' Department of Physics */ /* '3' A.W.Wright Nuclear Structure Laboratory, Department of Physics */ /* '4' Department of Physics */ /* '5' The Institute of Physics */ /* '6' Department of Physics */ /* '7' Institut de Physique Nucleaire */ REF=PRL; VLP=73(1994)2680; RCTS=(208PB(8B,8B)208PB, 7BE(P,GAMMA)8B); PHQS=(ENGY-SPEC, ANGL-DSTRN, ASTR-SFCTR); /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,5; /* 2005-10-05 : Converted, Kc + Sr + On. Converted to EXFOR E1576 /* 2005-11-15 : Altered, At + Sr. Re-digitized */ ENR=99.5%; CHM=ELM; PHYS-FORM=SLD; THK-TGT=50MG/CM**2; POL-TGT=0%; ALGN-TGT=0%; ACC=(CYC'8',PRJFS'9'); /* '8' Primary 12C beam of 91 MeV/A bombarded a 9Be target of 1.4 g/cm**2 thickness. Reaction products were analyzed by the projectile fragment separator RIPS to obtain a radioactive 8B beam. */ /* '9' RIKEN projectile fragment separator (RIPS) */ INST-ACC=(2JPNIPC'8',2JPNIPC'9'); BEAM-INTNSTY=XA'10'; /* '10' 2*10**4/s */ POL-PRJ=0%; DET-PARTCL=(P,7BE); COINC=(P,7BE); ANT-COINC=NO; DET-SYS=(SCT'11',TOF'12',EDE); /* '11' Plastic scintillator: To detect proton and 7Be */ /* '12' To determine energy of breakup fragments */ ERS-DET=XKEV'13'; /* '13' Energy resolution is 100 and 130 keV at 0.6 and 1.7 MeV of relative energy between 7Be and neutron, respectively. */ /* Experimental Method: - Time-of-flight (To determine energy of breakup fragments) - Particle identification by 'E/Delta E' measurement /* Related references - F.J.Vaughn et al., PR/C, 2(1970)1657. Reference with which data agree. See also EXFOR C0501.002. - B.W.Filippone et al., PR/C, 28(1983)2222. Reference with which data agree. See also EXFOR C0502.002. - P.D.Parker, AJ, 145(1966)960. (No discussion on comparison in main reference). See also EXFOR F0425.002. - R.W.Kavanagh et al., BAP, 14(1969)1209. (No discussion on comparison in main reference). See also EXFOR F0515.002. RCT=7BE(P,GAMMA)8B; PHQ=ASTR-SFCTR; /* Additional results shown but not compiled - A very preliminary value of S17(E=0)=16.7+-3.2 eVb which was extrapolated by using the procedure used in [B.W. Filippone et al., Phys. Rev. Lett. 50(1983)412; Phys. Rev. C 28(1983)2222] INC-ENGY-CM=0.6[1.7MEV; /* Analysis: - Extracted from fits of the data of the Coulomb dissociation yield as a function of the 8B scattering angle in the 208Pb(8B, 7Be+p)208Pb reaction /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,5; EMT-1=P; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; INC-ENGY-CM'22' INC-ENGY-CM'23' ASTR-SFCTR DELTA-ASTR-SFCTR (MEV) (MEV) (EV*B) (EV*B) 5.054E-01 7.032E-01 1.660E+01 +-2.453E+00 7.006E-01 8.984E-01 1.377E+01 +-2.830E+00 9.011E-01 1.099E+00 1.547E+01 +-3.585E+00 1.108E+00 1.294E+00 8.113E+00 +-5.283E+00 1.305E+00 1.497E+00 1.660E+01 +-7.170E+00 1.505E+00 1.901E+00 1.830E+01 +-7.736E+00 \END; /*===================================================================*/ |