Observation of the metastable negative argon ion ${Ar}^{-}$

Publisher Website

25 February 1985

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 54 (8) , 789-791
https://doi.org/10.1103/physrevlett.54.789

Abstract

The predicted metastable

{}^{4}S_{3 / 2}^{e}

{Ar}^{-}

ion has been observed for the first time. It was produced from an

{Ar}^{+}

beam by two-step electron capture in Cs vapor. Decay-rate measurements favor the existence of only one state with a lifetime of 350±150 ns.

Keywords

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