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| /*===================================================================*/
/* 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;
/*===================================================================*/
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