Universal convergent scaling laws of high-n intercombination transitions in helium

F. B. Rosmej; E. H. Guedda; R. Stamm

doi:10.1088/0953-4075/40/1/005

Universal convergent scaling laws of high-n intercombination transitions in helium

F. B. Rosmej
, E. H. Guedda
, R. Stamm

Aix Marseille Université
ISET

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

A general expression for intercombination spontaneous transition probabilities A_int in neutral helium is proposed. Consideration of the wavefunction mixing for high n-states showed that interference effects between the upper and lower states lead to a drastic decrease of the transition probabilities for high angular momentum states. This allowed us to develop convergent expressions for A_int up to very high principal quantum numbers n. Spin-dependent atomic population kinetics demonstrate the particular influence of interference effects for the singlet/triplet population of high n-states and cascades driven by intercombination transitions.

Original language	English
Article number	005
Pages (from-to)	49-56
Number of pages	8
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	40
Issue number	1
DOIs	https://doi.org/10.1088/0953-4075/40/1/005
Publication status	Published - 14 Jan 2007
Externally published	Yes

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AB - A general expression for intercombination spontaneous transition probabilities Aint in neutral helium is proposed. Consideration of the wavefunction mixing for high n-states showed that interference effects between the upper and lower states lead to a drastic decrease of the transition probabilities for high angular momentum states. This allowed us to develop convergent expressions for Aint up to very high principal quantum numbers n. Spin-dependent atomic population kinetics demonstrate the particular influence of interference effects for the singlet/triplet population of high n-states and cascades driven by intercombination transitions.

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Universal convergent scaling laws of high-n intercombination transitions in helium

Abstract

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