Photoionisation of rubidium in strong laser fields

Mihály András Pocsai; Imre Ferenc Barna; Károly Tökési

doi:10.1140/epjd/e2019-90524-3

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2023 Impact factor 1.5

Atomic, Molecular, Optical and Plasma Physics

Topical Issue: Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (2018)

Open Access

Eur. Phys. J. D (2019) 73: 74
https://doi.org/10.1140/epjd/e2019-90524-3

Regular Article

Photoionisation of rubidium in strong laser fields^★

Mihály András Pocsai¹^,2^a, Imre Ferenc Barna¹^,3 and Károly Tökési³^,4

¹ Wigner Research Centre for Physics of the Hungarian Academy of Sciences, Konkoly–Thege Miklós út 29–33, 1121 Budapest, Hungary
² University of Pécs, Institute of Physics, Ifjúság útja 6, H-7624 Pécs, Hungary
³ ELI-HU Nonprofit Ltd., Dugonics Tér 13, H-6720 Szeged, Hungary
⁴ Institute for Nuclear Research, Hungarian Academy of Sciences, Bem square 18/c, H-4026, Debrecen, Hungary

^a e-mail: pocsai.mihaly@wigner.mta.hu

Received: 27 September 2018
Received in final form: 5 February 2019
Published online: 9 April 2019

Abstract

The photoionisation of rubidium in strong infra-red laser fields based on ab initio calculations was investigated. The bound and the continuum states are described with Slater orbitals and Coulomb wave packets, respectively. The bound state spectra were calculated with the variational method and we found it reproduced the experimental data within a few percent accuracy. Using the similar approach, ionisation of Rb was also successfully investigated. The effects of the shape and the parameters of the pulse to the photoionisation probabilities and the energy spectrum of the ionised electron are shown. These calculations may provide a valuable contribution at the design of laser and plasma based novel accelerators, the CERN AWAKE experiment.

Key words: Topical issue

^★

Contribution to the Topical Issue “Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (2018)’’, edited by Károly Tőkési, Béla Paripás, Gábor Pszota, and Andrey V. Solov’yov.

© The Author(s) 2019. This article is published with open access at Springerlink.com

Open Access This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.