Westfälische Wilhelms-Universität Münster
- Fachbereich Physik -
ALLGEMEINES PHYSIKALISCHES KOLLOQUIUM
Mittwoch, 04. Juni 1997
Prof. Dr. K. Amos
School of Physics, University of Melbourne
A Fully Microscopic Model of Proton Scattering
from Nuclei
Effective two nucleon interactions in the nuclear medium have been defined
from an accurate mapping of g-matrices obtained by solving the Brueckner-Bethe-Goldstone
equations for infinite nuclear matter. Such effective interactions have
now been determined for protons with energies in the range 65 to 200 MeV.
They have been used to specify energy dependent, complex, and nonlocal
optical potentials by full folding with the ground state one-nucleon density
matrix elements of nuclei. With those optical potentials, differential
cross sections, analyzing powers and spin rotations for elastic scattering
are predicted. Excellent results have been obtained as those predictions
well reproduce observed data with no a posteriori adjustment to
any of the details of the calculations. The associated relative motion
wave functions have been used as the distorted waves in distorted wave
approximation (DWA) studies of select inelastic scattering events with
similar success. The same effective interactions were used as the transition
operators in those calculations. The relevant nuclear spectroscopy for
the elastic and DWA (p, p') calculations has been found from large basis
shell model evaluations of nuclear structure; wave functions of which give
good descriptions of form factors obtained from electron scattering. The
procedure explains observed data from the radioactive beam experiments
in which exotic "halo nuclei" are scattered from hydrogen targets.
Ort: Wilhelm-Klemm-Str. 9, Hörsaal 404
Zeit: 17 Uhr c.t.
Einladender: Weiguny