Lecturer:  Koji Arai (Universite Libre de Bruxelles, Belgium)

Title : Low-energy 6He+p reaction in a microscopic multicluster model

Date:   9/3/2001 (Mon.) 13:30 -

Place:  RIKEN Main Bldg. 1F Seminar Room

                           The seminar will be given in English.

Abstract:
The low-energy 6He+p reactions are studied in the framework of
a microscopic multi-cluster model.
The 6He, 6Li, and t wave functions are given with
the microscopic three-cluster models.
The different thresholds in 7Li are fairly well reproduced.
The model provides the experimentally known states and resonances
of 7Li up to E_x=12 MeV except the second 7/2- state.
A 3/2-; T=3/2 resonance is obtained which should correspond
to the experimental 3/2-;3/2 resonance at E_{c.m.}=1.27 MeV.
The 6He(p,n)6Li0+; 3.56 MeV cross section should be strongly
affected by this resonance.
Cross sections are also calculated for the 6He+p elastic scattering
and for the 6He(p,alpha)t transfer reaction.
The 6He+n elastic phase shifts are determined with a similar model
and provide the isobaric analog 3/2- ground state of 7He
and a 1/2- excited state.