JAPC - Bound state approaches to matter-antimatter scattering

Speaker: Dr. Jim Mitroy, Charles Darwin University, Darwin, Australia

Topic: "Bound state approaches to matter-antimatter scattering"

Time: 2:00 PM, Friday, January 25th, 2008

Place: P-148 (refreshments will be served at 1:45 PM in P145A)

Abstract: The calculation of positron-atom and positronium-atom scattering and annihilation cross sections is a difficult technical problem due to positive charge on the positron. This causes a build-up of electronic charge in the vicinity of the positron. One consequence of this is that orthodox methods for solving the continuum Schrödinger equation converge so slowly as to become unwieldy. Methods developed for studying mixed electron-positron bound states have been adapted to give scattering observables and have been applied to a number of positron-atom and positronium-atom collision systems.

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