Nuclear Seminar

A Cluster Model of ⁶He and ⁶Li

Jeremy Armstrong
NSCL, Michigan State University

Monday, January 29, 2007   4:00 p.m.   NSH 124
(Refreshments served prior to seminar in NSH 124)

 

Small nuclei provide an ideal testing ground of few-body theories.  ⁶He is particularly interesting in that it shows an extended particle distribution similar to a halo nucleus, is loosely bound, and is a Borromean system.  We apply the Brink Formalism in secondary quantization to study the structure of ⁶He.  This formalism allows for the proper treatment of Fermi statistics and correct projection into eigenstates of angular momentum.  The alpha plus dineutron configuration and “cigar” (neutron, alpha, neutron chain) configuration were studied to obtain binding energies, charge radii, matter radii, and B(E2) for ⁶He.  The same configurations were used to obtain the same observables for ⁶Li.  We were then able to calculate the log ft value for the beta decay of ⁶He.