[Triumf-seminars] TRIUMF Seminar today at 14:00

[postmaster@admin.triumf.ca]

---------------------- multipart/mixed attachment
Date/Time: Thu 2006-08-10 at 14:00

Location:  Auditorium          

Speaker:   David Cardamone (Simon Fraser University)

Title:     Coherence and Decoherence in the Decay of Superdeformed Nuclei

Abstract: The existence of high-spin superdeformed states is one of the most striking verifications of the nuclear shell model. Nevertheless, the physics for decay out of these states into normal-deformed bands remains a topic of intense debate. Using a Dyson's Equation approach, I'll show that a simple two-level model (Stafford & Barrett PRC 60, 51305) captures all the essential physics, and moreover results in a straightforward, intuitive understanding of the problem. The decay-out is then seen to be a competition between the decoherent E1 and E2 processes which cause decay within each rotational band, as mediated by coherent Rabi oscillations between the two deformations. Furthermore, the two-level model explains the surprising universality of decay-out profiles in the "classic" 190 mass region.

Stimulants available 15 minutes before the talk.

______________________________

Subscription information available at http://admin.triumf.ca/netdata/seminars/list


---------------------- multipart/mixed attachment--