Annihilation rate in Ps-and properties of two-electron ions
- 14 March 1993
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 26 (5) , 1031-1037
- https://doi.org/10.1088/0953-4075/26/5/022
Abstract
The expectation values of the various geometric parameters were determined for the ground state of the Ps- ion. The evaluated (e+,e-) pair annihilation rate in Ps- is approximately 2.086121*109 s-1. The mass dependence of a number of geometric parameters for symmetric negative ions such as X-X-Z+ where mXZ was also studied. It is shown that all presented geometrical parameters have a smooth form of the mass dependence.Keywords
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