The Influence of the Effective Ionization Potential and Initial Momentum on the Barrier-Suppression Ionization Rate in a Circularly Polarized Laser Field

Barrier suppression ionization rate for noble gases is analyzed considering the initial momentum of the ejected photoelectron and the influence of the ponderomotive and the Stark shifts on the ionization potential, for a low-frequency, circularly polarized laser field. In order to accomplish it, thr...

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Published in:Bulletin of the Lebedev Physics Institute 2023-10, Vol.50 (10), p.420-428
Main Authors: Kurtović, M., Petrović, V., Petrović, I.
Format: Article
Language:English
Subjects:
Airy function
Circular polarization
Critical field (superconductivity)
Ion charge
Ionization potentials
Momentum
Photoelectrons
Physics
Physics and Astronomy
Rare gases
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container_title Bulletin of the Lebedev Physics Institute
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creator Kurtović, M.
Petrović, V.
Petrović, I.
description Barrier suppression ionization rate for noble gases is analyzed considering the initial momentum of the ejected photoelectron and the influence of the ponderomotive and the Stark shifts on the ionization potential, for a low-frequency, circularly polarized laser field. In order to accomplish it, three different approaches are used: a critical field, an ion charge, and the Airy function. The results are compared across the approaches used and with the other theoretical and experimental results. Good agreement is found. The research shows that the ponderomotive potential and the Stark shift affect the rate differently in these approaches, while the initial momentum of the ejected photoelectron significantly influences the ionization rate regardless of the approach.
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subjects Airy function
Circular polarization
Critical field (superconductivity)
Ion charge
Ionization potentials
Momentum
Photoelectrons
Physics
Physics and Astronomy
Rare gases
title The Influence of the Effective Ionization Potential and Initial Momentum on the Barrier-Suppression Ionization Rate in a Circularly Polarized Laser Field
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