KnE Engineering

ISSN: 2518-6841

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Coulomb Corrections in Photoelectron Spectra in the Adiabatic Limit

Published date: Oct 08 2018

Journal Title: KnE Engineering

Issue title: Breakthrough directions of scientific research at MEPhI: Development prospects within the Strategic Academic Units

Pages: 281–288

DOI: 10.18502/keg.v3i6.3005

Authors:
Abstract:

A momentum-dependent Coulomb correction to the probability of nonlinear ionization in a strong low-frequency laser field is derived analytically in the adiabatic limit, when the quasi-static tunneling model applies. Obtained formulas show that the Coulomb modification of photoelectron spectra can be significant both in linearly and circularly polarized fields. For linear polarization, it leads to a relative enhancement of the ionization probability for photoelectron energies of the order of the ponderomotive energy. This Coulomb effect is expected to be most significant for atomic species with relatively low ionization potentials, such as alkali atoms.

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