Effects of Electric Fields upon Autoionizing States of Sr
- 9 January 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 40 (2) , 118-121
- https://doi.org/10.1103/physrevlett.40.118
Abstract
We report the first observation of significant perturbations by external fields of the autoionizing resonance structure of a two-electron atoms. The effects of electric fields up to 20 kV/cm on autoionizing resonances in Sri were observed by three-photon ionization spectroscopy in an atomic beam. In addition to effects analogous to those for bound Stark states of a one-electron Rydberg atom, we observed a new effect: The characteristic shapes and widths of autoionizing resonances (Fano-Beutler profiles) can be strongly influenced by electric fields.Keywords
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