/*===================================================================*/ /* NRDF D1776 Data No.2 */ /*===================================================================*/ /* Bibliography */ /*===================================================================*/ \\BIB,2; 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,2; /* 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=12C(11BE,11BE)12C; RTY=INEL-SCATT; PHQ=ENGY-SPEC; THK-TGT=184MG/CM**2; RCT=16O(P,P)16O; PHQ=ENGY-SPEC'22'; /* '22' Energy spectrum for fixed angles */ /*===================================================================*/ /* Descriptive Parameters */ /*===================================================================*/ \\DATA,2; INC-ENGY-LAB=72.0MEV/A; SYS-ERR=[20%'20'; /* '20' Total systematic error. Uncertainty in the absolute normalization (mainly coming from uncertainties in neutron detection efficiency) */ EMT-2=N; EMT=P; THTL=0DEG; /*===================================================================*/ /* Data Table */ /*===================================================================*/ \DATA; EXC-ENGY-EMT DSIGMA/DE (MEV) (B/MEV) 5.095E-02 1.449E-02 1.459E-01 3.532E-02 2.495E-01 3.603E-02 3.531E-01 4.079E-02 4.524E-01 3.341E-02 5.517E-01 3.410E-02 6.985E-01 2.706E-02 9.014E-01 5.267E-02 1.100E+00 6.212E-02 1.299E+00 3.931E-02 1.497E+00 5.279E-02 1.804E+00 3.073E-02 2.210E+00 4.162E-02 2.607E+00 3.229E-02 3.004E+00 2.296E-02 3.500E+00 2.642E-02 EXC-ENGY DSIGMA/DOMEGA/DE DELTA-DSIGMA/DOMEGA/DE (MEV) (MB/SR/MEV) (MB/SR/MEV) 5.610 0.009 +-0.003 5.856 0.026 +-0.004 6.103 0.165 +-0.009 6.350 0.006 +-0.005 6.596 0.013 +-0.005 6.843 1.105 +-0.051 7.090 0.213 +-0.011 7.336 0.011 +-0.006 7.583 0.020 +-0.006 7.830 0.004 +-0.006 8.076 0.005 +-0.006 8.323 0.005 +-0.006 8.570 0.006 +-0.006 8.816 0.059 +-0.007 9.063 0.013 +-0.006 9.310 0.001 +-0.006 9.556 0.016 +-0.006 9.803 0.314 +-0.016 10.050 0.051 +-0.007 10.296 0.058 +-0.007 10.543 0.035 +-0.007 10.790 0.049 +-0.007 11.036 0.267 +-0.014 11.283 0.133 +-0.009 11.530 0.601 +-0.029 11.776 0.089 +-0.008 12.023 0.408 +-0.020 12.270 0.110 +-0.009 12.516 0.489 +-0.024 12.763 0.389 +-0.020 13.010 2.390 +-0.109 13.256 0.856 +-0.040 13.503 0.347 +-0.018 13.750 0.434 +-0.022 13.996 0.673 +-0.032 14.243 0.224 +-0.013 14.490 0.103 +-0.010 14.736 0.201 +-0.013 14.983 0.538 +-0.026 15.230 0.329 +-0.018 15.476 0.142 +-0.011 15.723 0.196 +-0.013 15.970 0.287 +-0.016 16.216 0.590 +-0.029 16.463 0.458 +-0.023 16.710 0.503 +-0.025 16.956 0.809 +-0.038 17.203 1.623 +-0.075 17.450 0.673 +-0.032 17.696 0.558 +-0.027 17.943 0.617 +-0.030 18.190 0.594 +-0.029 18.436 0.881 +-0.041 18.683 1.280 +-0.059 18.930 0.979 +-0.046 19.176 0.775 +-0.037 19.423 0.824 +-0.039 19.670 0.683 +-0.033 19.916 0.749 +-0.035 20.163 1.164 +-0.054 20.410 1.596 +-0.073 20.656 1.282 +-0.059 20.903 1.475 +-0.068 21.150 0.947 +-0.044 21.396 1.055 +-0.049 21.643 1.408 +-0.065 21.890 1.908 +-0.087 22.136 2.305 +-0.105 22.383 1.913 +-0.087 22.630 1.479 +-0.068 22.876 1.702 +-0.078 23.123 1.532 +-0.070 23.370 1.342 +-0.062 23.616 1.332 +-0.061 23.863 1.558 +-0.072 24.110 1.670 +-0.077 24.356 1.455 +-0.067 24.603 1.418 +-0.065 24.850 1.369 +-0.063 25.096 1.272 +-0.059 25.343 1.170 +-0.054 25.590 1.117 +-0.052 25.836 1.077 +-0.050 26.083 1.033 +-0.048 26.330 0.970 +-0.046 26.576 0.870 +-0.041 26.823 0.795 +-0.038 27.070 0.772 +-0.037 27.316 0.773 +-0.037 27.563 0.736 +-0.036 27.810 0.718 +-0.035 28.056 0.675 +-0.033 28.303 0.648 +-0.032 28.550 0.671 +-0.033 28.796 0.648 +-0.032 29.043 0.657 +-0.033 \END; /*===================================================================*/ |