The positronium atom as a benchmark for Rydberg excitation experiments in atomic physics |
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Authors: | F Castelli |
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Institution: | 1.Dipartimento di Fisica,Università degli Studi di Milano and INFN Sezione di Milano,Milano,Italy |
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Abstract: | Positronium is a hydrogen-like pure leptonic atom that has gained great attention in basic physics for its role in antimatter
studies, in quantum electrodynamics tests and in material science. Positronium spectroscopy is also an interesting research
field, especially in the again unexplored region of Rydberg states, where motional effects turns out of overwhelming importance
in determining the level structure, at variance with the usual Rydberg atomic spectroscopy. In this paper we present a simple
theory of optical excitation of positronium high-n levels in strong magnetic fields, and determine the conditions for obtaining saturation of the transitions. It is shown that
positronium atom can be an atomic physics benchmark for laser excitation experiments on Rydberg states in magnetic environments. |
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