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Acta Physica Sinica

ABOVE-THRESHOLD IONIZATION INVOLVING PROCESSES OF AUTOIONIZATION

CHEN RONG-QING, XU ZHI-ZHAN, Guanhua Yao, Yu Wei, (1)中国高等科学技术中心(世界实验室)理论物理分中心; (2)中国科学院上海光学精密机械研究所,上海,201800

Published Jan 1, 1990• 0 citations
Publisher

Abstract

A simple model of above-threshold ionization which takes into account the processes of autoionization has been studied and the analytic solution of photoelectron spectra is presented. The effects of autoionization on abovethreshold ionization are discussed. It is shown that autoionization will make processes of above-threshold ionization more complicated and a lot of new effects will appear.

DOI
10.7498/aps.39.25

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A simple model of above-threshold ionization which takes into account the processes of autoionization has been studied and the analytic solution of photoelectron spectra is presented. The effects of autoionization on abovethreshold ionization are discussed. It is shown that autoionization will make processes of above-threshold ionization more complicated and a lot of new effects will appear.
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Photoelectron ionization spectra of an autoionization system with one discrete level interacting with a neighbor two-level atom are discussed. The formula for long-time ionization spectra is derived. According to this formula, the spectra can be composed of up to eight peaks. Moreover, the Fano-like zeros for weak optical pumping are identified in these spectra. The conditional ionization spectra depending on the state of the neighbor atom exhibit oscillations at the Rabi frequency. Dynamical spectral zeros occurring once per the Rabi period are revealed in these spectra.