Original scientific paper

The two-photon decay of 1s2s 1S0-like states in heavy atomic systems

Paul H. Mokler ; GSI, Planckstrasse 1, D-64291 Darmstadt, Germany
Robert W. Dunford ; ARGONNE National Laboratory, Argonne, IL 60439, U.S.A.

Abstract

In He-like systems the direct decay of the 1s2s 1S0 state to the 1s2 1S0 ground state is "forbidden". The transition 1s2s 1S0® 1s2 1S0 by two photons sensitively probes the structure of the complete atomic system. In particular, the shape of the two-photon spectrum is sensitive to it and also reveals for heavy atomic numbers details of relativistic effects in strong central fields. A brief survey on this field of research is given with special emphasis on high nuclear charge Z.

Keywords

heavy He-like systems; two-photon decay; 1s2s 1S0® 1s2 1S0 transition; relativistic effects

Hrčak ID:

301103

URI

https://hrcak.srce.hr/301103

Publication date:

1.8.2001.

Article data in other languages: croatian

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