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Nuclear Seminar
What
can atomic mass teach us about nuclear structure?
Prof.
Daeg Brenner
Clark University
Monday, May
15, 2006 4:00 p.m. NSH 124
(Refreshments served prior to seminar
in NSH 124)
The total binding energy of the nucleus, derived
from atomic masses, embodies the sum of all nucleonic interactions.
Differences of masses or binding energies provide signatures
of shell closure and, in some cases, the onset of deformation.
A brief review of mass surface models will be presented that
highlights the impact of structure effects. Average empirical
proton-neutron interaction energies between the last nucleons,
dVp,n, derived from double differences
of masses will be examined throughout the mass surface and the
relationship of these to shell closures and deformation discussed.
Finally, a scheme based on fractional shell filling will be
presented that may serve as a signature of shell structure in
exotic nuclei, far from stability.
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