Positronium formation in the noble gases

P. G. Coleman; T. C. Griffith; G. R. Heyland; T. L. Killeen

doi:10.1088/0022-3700/8/10/006

Positronium formation in the noble gases

P. G. Coleman, T. C. Griffith, G. R. Heyland, T. L. Killeen

Research output: Contribution to journal › Article

Abstract

Positronium formation fractions have been determined from lifetime experiments for all the noble gases. Taken in conjunction with the positron beam total cross section measurements of Canter et al. (see abstr. A27547 of 1974), it is possible to estimate values for the positronium formation and positron excitation cross sections for helium and, with reduced accuracy, for neon and argon in the energy range from the positronium threshold E₀ to the ionization potential E₁. It is shown that these cross sections are approximately 0.2 pi a₀² at E₁ for helium and somewhat larger for neon and argon.

Original language	English (US)
Article number	006
Pages (from-to)	L185-L189
Journal	Journal of Physics B: Atomic and Molecular Physics
Volume	8
Issue number	10
DOIs	https://doi.org/10.1088/0022-3700/8/10/006
State	Published - Dec 1 1975
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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Coleman, P. G., Griffith, T. C., Heyland, G. R., & Killeen, T. L. (1975). Positronium formation in the noble gases. Journal of Physics B: Atomic and Molecular Physics, 8(10), L185-L189. [006]. https://doi.org/10.1088/0022-3700/8/10/006

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AU - Killeen, T. L.

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AB - Positronium formation fractions have been determined from lifetime experiments for all the noble gases. Taken in conjunction with the positron beam total cross section measurements of Canter et al. (see abstr. A27547 of 1974), it is possible to estimate values for the positronium formation and positron excitation cross sections for helium and, with reduced accuracy, for neon and argon in the energy range from the positronium threshold E0 to the ionization potential E1. It is shown that these cross sections are approximately 0.2 pi a02 at E1 for helium and somewhat larger for neon and argon.

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