Coherent excitation of the singlet-triplet mixed 1s4f state of helium

J. B. Wang; J. F. Williams; A. T. Stelbovics; J. E. Furst; D. H. Madison

doi:10.1103/PhysRevA.52.2885

Coherent excitation of the singlet-triplet mixed 1s4f state of helium

J. B. Wang^*, J. F. Williams, A. T. Stelbovics, J. E. Furst, D. H. Madison

^*Corresponding author for this work

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Abstract

In this paper, we present a detailed theoretical description for the coherent electron-impact excitation, the subsequent time evolution, and the cascading decay process of the singlet-triplet mixed 1s4f state of helium. The excitation amplitude and phase of each sublevel of this state are related to measurable coincidence intensities and polarizations of the emitted photons. It is found that the intensity and polarization of the emitted photons are time modulated due to the singlet and triplet mixing in the 1s4f state.

Original language	English
Pages (from-to)	2885-2900
Number of pages	16
Journal	Physical Review A
Volume	52
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevA.52.2885
Publication status	Published - 1995
Externally published	Yes

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abstract = "In this paper, we present a detailed theoretical description for the coherent electron-impact excitation, the subsequent time evolution, and the cascading decay process of the singlet-triplet mixed 1s4f state of helium. The excitation amplitude and phase of each sublevel of this state are related to measurable coincidence intensities and polarizations of the emitted photons. It is found that the intensity and polarization of the emitted photons are time modulated due to the singlet and triplet mixing in the 1s4f state.",

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AU - Furst, J. E.

AU - Madison, D. H.

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AB - In this paper, we present a detailed theoretical description for the coherent electron-impact excitation, the subsequent time evolution, and the cascading decay process of the singlet-triplet mixed 1s4f state of helium. The excitation amplitude and phase of each sublevel of this state are related to measurable coincidence intensities and polarizations of the emitted photons. It is found that the intensity and polarization of the emitted photons are time modulated due to the singlet and triplet mixing in the 1s4f state.

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Coherent excitation of the singlet-triplet mixed 1s4f state of helium

Abstract

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