Experimental evidence for negative-ion formation by the collisional reaction $Rb (6 d) + Rb (5 s) \to {Rb}^{+} + {Rb}^{-}$

Publisher Website

1 August 1984

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

Vol. 30 (2) , 1132-1134
https://doi.org/10.1103/physreva.30.1132

Abstract

Negative ions are observed in a rubidium vapor when atoms are excited to the

6 d

level. Analysis shows that they correspond to the collision

Rb (6 d {}^{2}D_{\frac{5}{2}}) + Rb (5 s) + Δ E \to {Rb}^{+} + {Rb}^{-}

. The rate coefficient of the process is found to be (1.1±0.6)×

10^{- 12}

{cm}^{3}

s^{- 1}

and the corresponding cross section 1.3×

10^{- 16}

{cm}^{2}

.

Keywords

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