Spontaneous relativistic two-photon decay rate mathematical expression in heliumlike systems

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Abstract

We derive a theoretical expression for the two-photon emission rate of two-electron systems, in a form suitable for easy implementation in numerical calculations. Racah algebra techniques were used to extended previous work on two-photon emission in hydrogen-like systems to more complex ones. The obtained expression is, as far as we are aware, the first general expression that gives the spontaneous two-photon decay rates of helium-like systems for any combination of multipoles.
Original languageEnglish
Pages (from-to)27-31
Number of pages5
JournalThe European Physical Journal D
Volume13
Issue number1
DOIs
Publication statusPublished - 1 Jan 2001

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