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Title: Ionization of Excited States of the Hydrogen Atom by a Laser Pulse

Abstract

The energy spectra of electrons are calculated in the adiabatic approximation when the excited 2s, 2p, and 3d states of the hydrogen atom are ionized by a superstrong ultrashort laser pulse.

Authors:
;  [1]
  1. Voronezh State University, Universitetskaya pl. 1, Voronezh, 394006 (Russian Federation)
Publication Date:
OSTI Identifier:
20768702
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 101; Journal Issue: 6; Other Information: Translated from Zhurnal Ehksperimental'noj i Teoreticheskoj Fiziki, ISSN 0044-4510, 128, 1156-1168 (No. 6, 2005); DOI: 10.1134/1.2163918; (c) 2005 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA); TN:
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ADIABATIC APPROXIMATION; ATOMS; ELECTRONS; ENERGY SPECTRA; EXCITED STATES; HYDROGEN; IONIZATION; LASERS; PULSES

Citation Formats

Zon, B.A., and Kornev, A.S. Ionization of Excited States of the Hydrogen Atom by a Laser Pulse. United States: N. p., 2005. Web. doi:10.1134/1.2163918.
Zon, B.A., & Kornev, A.S. Ionization of Excited States of the Hydrogen Atom by a Laser Pulse. United States. doi:10.1134/1.2163918.
Zon, B.A., and Kornev, A.S. Thu . "Ionization of Excited States of the Hydrogen Atom by a Laser Pulse". United States. doi:10.1134/1.2163918.
@article{osti_20768702,
title = {Ionization of Excited States of the Hydrogen Atom by a Laser Pulse},
author = {Zon, B.A. and Kornev, A.S.},
abstractNote = {The energy spectra of electrons are calculated in the adiabatic approximation when the excited 2s, 2p, and 3d states of the hydrogen atom are ionized by a superstrong ultrashort laser pulse.},
doi = {10.1134/1.2163918},
journal = {Journal of Experimental and Theoretical Physics},
number = 6,
volume = 101,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}
  • No abstract prepared.
  • Experiments have shown that the microwave ionization probability of a highly excited, almost monodimensional, hydrogen atom subjected to a microwave pulse sometimes grows in steps when the peak electric field of the pulse is increased. Classical pulsed simulations display the same steps, which have been traced to phase-space metamorphoses. Quantum numerical calculations again exhibit the same ionization steps. I show that the time sequence of two-level interactions, responsible for the observed steps in the quantum picture, is strictly related to the classical phase-space structures generated by the above-mentioned metamorphoses.
  • The probability of ionization of highly excited states of a hydrogen atom by a low-frequency field is estimated by using the previously derived quasi-classical wave function of an electron in a Coulomb field and in a radiation field. The expression obtained predicts an ionization threshold at field intensities approximately equal to those observed experimentally, but predicts an increase in ionization probability that is approximately ten times the increase observed experimentally when the field intensity in the threshold region is increased. The approximations underlying the derivation of the equation for the ionization probability are discussed.
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