Electron-Impact Excitation of Auto-Ionizing Levels in Cesium

1 July 1971

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

Vol. 4 (1) , 125-132
https://doi.org/10.1103/physreva.4.125

Abstract

Auto-ionizing states in Cs between 12 and 20 eV have been studied by electron impact. The retarding-potential-difference method was used to obtain an electron beam with energy spread of about 0.1 eV. To determine the threshold energies, inelastically scattered electrons were analyzed by the trapped-electron method. We have been able to identify about 20 levels, and the agreement with spectroscopic data is excellent. A peak appearing at 12.80 eV is probably due to the quartet states observed by Feldman and Novick.

Keywords

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