Helium atom in the monochromatic electromagnetic field: AAAA Hylleraas basis treatment

I. A. Ivanov; A. S. Kheifets

doi:10.1140/epjd/e2005-00334-y

Helium atom in the monochromatic electromagnetic field: AAAA Hylleraas basis treatment

I. A. Ivanov^*, A. S. Kheifets

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We apply a non-perturbative procedure for the calculation of the total photoionization cross-section of two-electron atomic systems. The procedure is based on the Floquet-Fourier representation of the time-dependent Schrödinger equation. With the use of the Hylleraas-type basis functions, the total photoionization cross-sections obtained are within the accuracy of a fraction of a percent, which, we believe, is the most accurate estimate for the cross-sections available. The total photoionization cross-sections for neutral helium deviate notably from the benchmark experimental data [J.A.R. Samson et al., J. Phys. B 27, 887 (1994)].

Original language	English
Pages (from-to)	249-255
Number of pages	7
Journal	European Physical Journal D
Volume	38
Issue number	2
DOIs	https://doi.org/10.1140/epjd/e2005-00334-y
Publication status	Published - May 2006

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title = "Helium atom in the monochromatic electromagnetic field: AAAA Hylleraas basis treatment",

abstract = "We apply a non-perturbative procedure for the calculation of the total photoionization cross-section of two-electron atomic systems. The procedure is based on the Floquet-Fourier representation of the time-dependent Schr{\"o}dinger equation. With the use of the Hylleraas-type basis functions, the total photoionization cross-sections obtained are within the accuracy of a fraction of a percent, which, we believe, is the most accurate estimate for the cross-sections available. The total photoionization cross-sections for neutral helium deviate notably from the benchmark experimental data [J.A.R. Samson et al., J. Phys. B 27, 887 (1994)].",

author = "Ivanov, \{I. A.\} and Kheifets, \{A. S.\}",

year = "2006",

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doi = "10.1140/epjd/e2005-00334-y",

language = "English",

volume = "38",

pages = "249--255",

journal = "European Physical Journal D",

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TY - JOUR

T1 - Helium atom in the monochromatic electromagnetic field

T2 - AAAA Hylleraas basis treatment

AU - Ivanov, I. A.

AU - Kheifets, A. S.

PY - 2006/5

Y1 - 2006/5

N2 - We apply a non-perturbative procedure for the calculation of the total photoionization cross-section of two-electron atomic systems. The procedure is based on the Floquet-Fourier representation of the time-dependent Schrödinger equation. With the use of the Hylleraas-type basis functions, the total photoionization cross-sections obtained are within the accuracy of a fraction of a percent, which, we believe, is the most accurate estimate for the cross-sections available. The total photoionization cross-sections for neutral helium deviate notably from the benchmark experimental data [J.A.R. Samson et al., J. Phys. B 27, 887 (1994)].

AB - We apply a non-perturbative procedure for the calculation of the total photoionization cross-section of two-electron atomic systems. The procedure is based on the Floquet-Fourier representation of the time-dependent Schrödinger equation. With the use of the Hylleraas-type basis functions, the total photoionization cross-sections obtained are within the accuracy of a fraction of a percent, which, we believe, is the most accurate estimate for the cross-sections available. The total photoionization cross-sections for neutral helium deviate notably from the benchmark experimental data [J.A.R. Samson et al., J. Phys. B 27, 887 (1994)].

UR - https://www.scopus.com/pages/publications/33645826254

U2 - 10.1140/epjd/e2005-00334-y

DO - 10.1140/epjd/e2005-00334-y

M3 - Article

SN - 1434-6060

VL - 38

SP - 249

EP - 255

JO - European Physical Journal D

JF - European Physical Journal D

IS - 2

ER -

Helium atom in the monochromatic electromagnetic field: AAAA Hylleraas basis treatment

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