Exclusive and Restricted-Inclusive Reactions Involving the Be-11 One-Neutron Halo
Journal article, 1994
Reactions of a 41 MeV/u beam of the radioactive halo nucleus Be-11 have been studied with a counter telescope coupled to an array of neutron detectors covering angles up to 97-degrees. The technique allows to determine single-neutron inclusive and exclusive angular distributions. The targets (Be, Ti and Au) were chosen to illustrate the relative roles played by nuclear and Coulomb mechanisms. The channels leading to Be-10, the dissociation channels, correspond to impact parameters larger than the sum of the radii of the target and the Be-10 core. It is shown that for the dissociation process it is possible to account almost quantitatively for the integral, single- and double-differential cross sections from models without free parameters including the Coulomb, Serber and Glauber (diffraction-dissociation) mechanisms. The neutron distributions from the nondissociative reaction channels show little individuality and it is convenient to group them together as the channel ''neutron plus anything different from Be-10''. We refer to these as ''restricted-inclusive'' reactions. These seem to be a promising tool for obtaining accurate information on the halo wave function in momentum coordinates.
X)
RICH NUCLEI
BE-9
ANALYSIS IN TERMS OF COULOMB
BREAK-UP
INTEGRAL SIGMA(BE-10) FOLLOWING
EXCITATION
DISSOCIATION CROSS-SECTION
TI
DOUBLE-DIFFERENTIAL
HEAVY-IONS
PROJECTILE FRAGMENTATION
LI-11 PROJECTILES
DIFFRACTIVE MECHANISMS
E(N)) NEAR 0-DEGREES
E=41 MEV/NUCLEON
EXCLUSIVE SIGMA(UPSILON(N)) UP TO 97-DEGREES
SIGMA(UPSILON
SERBER AND
AU-197 (BE-11
COULOMB DISSOCIATION
ASTROPHYSICAL INTEREST
PROJECTILE BREAKUP
MEASURED INCLUSIVE
LIGHT-NUCLEI
Author
R. Anne
R. Bimbot
S. Dogny
H. Emling
D. Guillemaudmueller
P. G. Hansen
P. Hornshoj
F. Humbert
Björn Jonson
Chalmers, Department of Experimental Physics, Subatomic Physics
M. Keim
M. Lewitowicz
P. Moller
A. C. Mueller
R. Neugart
Thomas Nilsson
Chalmers, Department of Experimental Physics, Subatomic Physics
Göran Hugo Nyman
Chalmers, Department of Experimental Physics, Subatomic Physics
F. Pougheon
K. Riisager
M. G. Saintlaurent
G. Schrieder
O. Sorlin
Olof Tengblad
Katarina Wilhelmsen Rolander
Chalmers, Department of Experimental Physics, Subatomic Physics
Nuclear Physics A
0375-9474 (ISSN)
Vol. 575 1 125-154Subject Categories
Subatomic Physics
DOI
10.1016/0375-9474(94)90142-2