Laser-modified Coulomb scattering states of an electron in the parabolic quasi-Sturmian-Floquet approachстатья

Статья опубликована в высокорейтинговом журнале

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Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.

Работа с статьей


[1] Laser-modified coulomb scattering states of an electron in the parabolic quasi-sturmian-floquet approach / A. S. Zaytsev, S. A. Zaytsev, L. U. Ancarani, K. A. Kouzakov // Physical Review A - Atomic, Molecular, and Optical Physics. — 2018. — Vol. 97. — P. 043417–1–043417–11. Electron scattering states in combined Coulomb and laser fields are investigated with a nonperturbative approach based on the Hermitian Floquet theory. Taking into account the Coulomb-specific asymptotic behavior of the electron wave functions at large distances, a Lippmann-Schwinger-Floquet equation is derived in the Kramers-Henneberger frame. Such a scattering-state equation is solved numerically employing a set of parabolic quasi-Sturmian functions which have the great advantage of possessing, by construction, adequately chosen incoming or outgoing Coulomb asymptotic behaviors. Our quasi-Sturmian-Floquet approach is tested with a calculation of triple differential cross sections for a laser-assisted (e,2e) process on atomic hydrogen within a first-order Born treatment of the projectile-atom interaction. Convergence with respect to the number of Floquet-Fourier expansion terms is numerically demonstrated. The illustration shows that the developed method is very efficient for the computation of light-dressed states of an electron moving in a Coulomb potential in the presence of laser radiation. [ DOI ]

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