/*===================================================================*/ /* NRDF D1573 Data No.8 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,8; D#=D1573; TITLE=/ Coulomb dissociation of a halo nucleus 11Be at 72A MeV /; PURPOSE=/ To perform the coincidence measurement of 11Be dissociation /; ATH=(T.NAKAMURA'1', S.SHIMOURA'1', T.KOBAYASHI'2', T.TERANISHI'1', K.ABE'3', N.AOI'1', Y.DOKI'1', M.FUJIMAKI'2', N.INABE'2', N.IWASA'4', K.KATORI'3', T.KUBO'2', H.OKUNO'1', T.SUZUKI'2', I.TANIHATA'2', Y.WATANABE'2', A.YOSHIDA'2', M.ISHIHARA'1,2'); INST-ATH=(2JPNTOK'1', 2JPNIPC'2', 2JPNOSA'3', 2JPNRIK'4'); /* '1' Department of Physics */ /* '3' Department of Physics */ /* '4' Department of Physics */ REF=PL/B; VLP=331(1994)296; RCTS=(PB(11BE,11BE)PB, 12C(11BE,11BE)12C, PB(11BE,N,10BE)PB); PHQS=(ENGY-SPEC, STRGTH-FUNCT, ANGL-DSTRN'5', MOM-DSTRN'6', ANGL-DSTRN'7', ANGL-DSTRN'8'); /* '5' dsigma/db (b=impact parameter. b is related to the scattering angle theta of the c.m. of 10Be+n system as b=a cot (theta/2), where a represents half the distance of closest approach in the classical Coulomb head-on collision) */ /* '6' Mean values of longitudinal momentum distributions */ /* '7' dsigma/dphi (azimuthal angular distibution of 10Be in 11Be rest frame) */ /* '8' dsigma/dcos(theta) (polar angular distibution of 10Be in 11Be rest frame) */ /*===================================================================*/ /* Experimental Conditions */ /*===================================================================*/ \\EXP,8; /* 2005-09-13 : Converted, Sr + On. Converted to EXFOR E1573 */ /* 2005-10-18 : Altered, Ah + Sr. Re-digitized */ CHM=ELM; PHYS-FORM=SLD; ACC=PRJFS'9'; /* '9' 11Be is provided by using a projectile fragmentation of 100A MeV 18O */ INST-ACC=2JPNIPC'10'; /* '10' RIPS */ INC-ENGY-LAB=72.0MEV/A; ERS-PRJ=0.2MEV/A'11'; /* '11' FWHM */ DET-PARTCL=(N,10BE); COINC=(N,10BE); ANT-COINC=NO; DET-SYS=(MAG'12',SCT'12',X'13',SCT'14',EDE'15',TOF'16'); /* '12' To detect 10Be */ /* '13' Drift chamber (To detect 10Be) */ /* '14' To detect neutron */ /* '15' To identify 10Be */ /* '16' To determine momentum vector of 10Be and neutron */ ERS-DET=XKEV'17'; /* '17' Energy resolution is proportional to square root of relative energy between 10Be and neutron. 450 keV FWHM is estimated at 1 MeV (relative energy). */ /* Experimental Method: - Particle identification by 'E/Delta E' measurement (To identify 10Be) - Time-of-flight (To determine momentum vector of 10Be and neutron) RCT=PB(11BE,N,10BE)PB; PHQ=ANGL-DSTRN'49'; /* '49' dsigma/dcos(theta) (polar angular distibution of 10Be in 11Be rest frame) */ THK-TGT=104MG/CM**2; ANL=X'50'; /* '50' First-order time-dependent perturbation theory */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,8; INC-ENGY-LAB=72.0MEV/A; EMT-2=N; INTRM=11BE; EXC-ENGY-INTRM-MAX=4MEV'51'; /* '51' Relative energy between 10Be and neutron */ /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; COS-CM'52' DATA1'53' DELTA-DATA1'53,54' (NODIM) (B) (B) -9.521E-01 8.147E-01 +-1.723E-01 -8.541E-01 6.946E-01 +-1.811E-01 -7.628E-01 9.050E-01 +-1.764E-01 -6.673E-01 8.867E-01 +-1.978E-01 -5.710E-01 5.895E-01 +-2.145E-01 -4.761E-01 8.333E-01 +-2.264E-01 -3.823E-01 7.744E-01 +-2.431E-01 -2.879E-01 1.176E+00 +-2.336E-01 -1.920E-01 1.038E+00 +-2.574E-01 -9.435E-02 1.568E+00 +-2.645E-01 3.409E-03 1.397E+00 +-2.717E-01 9.640E-02 9.949E-01 +-2.526E-01 1.935E-01 1.065E+00 +-2.693E-01 2.882E-01 1.375E+00 +-2.550E-01 3.797E-01 8.231E-01 +-2.717E-01 4.727E-01 1.084E+00 +-2.359E-01 5.691E-01 7.673E-01 +-2.359E-01 6.638E-01 1.071E+00 +-2.073E-01 7.621E-01 6.806E-01 +-2.097E-01 8.567E-01 1.029E+00 +-1.954E-01 9.517E-01 1.192E+00 +-1.883E-01 \END; /*===================================================================*/ |