Strong-field laser ionization of alkali atoms using two-dimensional cylindrical and three-dimensional Cartesian time-dependent Hartree--Fock theory

Pindzola, M S; Bottrell, G J; Bottcher, C

doi:10.1364/JOSAB.7.000659

Title: Strong-field laser ionization of alkali atoms using two-dimensional cylindrical and three-dimensional Cartesian time-dependent Hartree--Fock theory

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Abstract

The time-dependent Schroedinger equation is solved directly for an alkali atom subject to an arbitrarily strong electromagnetic field. Two methods are compared. A tridiagonal finite-difference method is used to solve Schroedinger's equation on a two-dimensional (2D) cylindrical coordinate lattice, while a finite-element method using odd-order {ital B} splines is used to solve Schroedinger's equation on a three-dimensional (3D) Cartesian coordinate lattice. Multiphoton ionization cross sections are extracted from 2D cylindrical calculations for hydrogen and lithium and then compared with previous perturbation theory results. Single-photon ionization probabilities are compared from 2D cylindrical and 3D Cartesian calculations for hydrogen.

Authors:

Pindzola, M S ^[1]; Bottrell, G J; Bottcher, C ^[2]

Department of Physics, Auburn University, Auburn, Alabama 36849 (USA)
Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830 (USA)

Publication Date:: Sun Apr 01 00:00:00 EST 1990

OSTI Identifier:: 6916939

DOE Contract Number:: AC05-84OR21400

Resource Type:: Journal Article

Journal Name:: Journal of the Optical Society of America, Part B: Optical Physics; (USA)

Additional Journal Information:: Journal Volume: 7:4; Journal ID: ISSN 0740-3224

Country of Publication:: United States

Language:: English

Subject:: 74 ATOMIC AND MOLECULAR PHYSICS; ALKALI METALS; MULTI-PHOTON PROCESSES; HYDROGEN; QUANTUM ELECTRONICS; ATOMS; ELECTRIC FIELDS; HARTREE-FOCK METHOD; LASER RADIATION; PHOTOIONIZATION; TIME DEPENDENCE; ELECTROMAGNETIC RADIATION; ELEMENTS; IONIZATION; METALS; NONMETALS; RADIATIONS; 640302* - Atomic, Molecular & Chemical Physics- Atomic & Molecular Properties & Theory

Citation Formats


                    Pindzola, M S, Bottrell, G J, and Bottcher, C. Strong-field laser ionization of alkali atoms using two-dimensional cylindrical and three-dimensional Cartesian time-dependent Hartree--Fock theory.  United States: N. p., 1990. 
        Web.  doi:10.1364/JOSAB.7.000659.

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                    Pindzola, M S, Bottrell, G J, & Bottcher, C. Strong-field laser ionization of alkali atoms using two-dimensional cylindrical and three-dimensional Cartesian time-dependent Hartree--Fock theory.  United States.  https://doi.org/10.1364/JOSAB.7.000659

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                    Pindzola, M S, Bottrell, G J, and Bottcher, C. 1990.  
        "Strong-field laser ionization of alkali atoms using two-dimensional cylindrical and three-dimensional Cartesian time-dependent Hartree--Fock theory".  United States.  https://doi.org/10.1364/JOSAB.7.000659.

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@article{osti_6916939,

  title        = {Strong-field laser ionization of alkali atoms using two-dimensional cylindrical and three-dimensional Cartesian time-dependent Hartree--Fock theory},

  author       = {Pindzola, M S and Bottrell, G J and Bottcher, C},

  abstractNote = {The time-dependent Schroedinger equation is solved directly for an alkali atom subject to an arbitrarily strong electromagnetic field. Two methods are compared. A tridiagonal finite-difference method is used to solve Schroedinger's equation on a two-dimensional (2D) cylindrical coordinate lattice, while a finite-element method using odd-order {ital B} splines is used to solve Schroedinger's equation on a three-dimensional (3D) Cartesian coordinate lattice. Multiphoton ionization cross sections are extracted from 2D cylindrical calculations for hydrogen and lithium and then compared with previous perturbation theory results. Single-photon ionization probabilities are compared from 2D cylindrical and 3D Cartesian calculations for hydrogen.},

  doi          = {10.1364/JOSAB.7.000659},

  url          = {https://www.osti.gov/biblio/6916939},
  journal      = {Journal of the Optical Society of America, Part B: Optical Physics; (USA)},

  issn         = {0740-3224},

  number       = ,

  volume       = 7:4,

  place        = {United States},

  year         = {Sun Apr 01 00:00:00 EST 1990},

  month        = {Sun Apr 01 00:00:00 EST 1990}

}

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https://doi.org/10.1364/JOSAB.7.000659

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