Research

 

Quasiclassical approach to tunnel ionization in the non relativistic and relativistic regimes

 

T. B. Miladinović and V. M. Petrović

 

Department of Physics, Faculty of Science, Kragujevac University, Kragujevac, Serbia, e-mail:violeta.petrovickg@gmail.com

 

Received 6 January 2014.
Accepted 29 May 2014.

 

Abstract

Non relativistic and relativistic transition rates were observed for the deep tunnel regime for the case of a linear polarized laser field. The contribution of the initial momentum of an ejected photoelectron, the ponderomotive potential and the linear Stark shift for the Ar atom and its ions were taken into account. It was shown that, in both regimes, these processes have an influence on the transition rate behavior. The curves obtained for the transition rate show that with increasing laser filed intensities and ion charge the influence of relativistic effects increases.

Keywords: Tunnel ionization; transition rate.

 

PACS: 32.80 -1; 32.80 Fb

 

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Acknowledgments

We are grateful to the Serbian Ministry of Education, Science and Technological Development for financial support through Projects 171020 and 171021.

 

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