Adiabatic theory of ionization of atoms by intense laser pulses: One-dimensional zero-range-potential model

Journal Article · Mon Mar 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.033415· OSTI ID:21408449

Tolstikhin, Oleg I ^[1]; Morishita, Toru ^[2]; Watanabe, Shinichi ^[2]

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1. Russian Research Center 'Kurchatov Institute', Kurchatov Square 1, Moscow 123182 (Russian Federation)
2. Department of Applied Physics and Chemistry, University of Electro-Communications, 1-5-1, Chofu-ga-oka, Chofu-shi, Tokyo (Japan)

As a first step toward the adiabatic theory of ionization of atoms by intense few-cycle laser pulses, here we consider the simplest one-dimensional zero-range-potential model. The theory for this model is developed. This theory rests on a single parameter {epsilon} giving a ratio of the atomic and laser time scales and becomes exact in the limit {epsilon}{yields}0 uniformly with respect to the amplitude of the laser pulse. We construct the asymptotics of the solution to the time-dependent Schroedinger equation and photoelectron spectrum. The factorization formula for the photoelectron spectrum near its classical boundary, first suggested by T. Morishita et al. [Phys. Rev. Lett. 100, 013903 (2008)] on the basis of ab initio calculations, is derived. The theory is illustrated by numerical calculations. Its comparison with the strong-field approximation is discussed.

• OSTI ID: 21408449
• Journal Information: Physical Review. A, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevA.81.033415; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
AMPLITUDES
APPROXIMATIONS
ASYMPTOTIC SOLUTIONS
ATOMS
COMPARATIVE EVALUATIONS
FACTORIZATION
IONIZATION
LASERS
ONE-DIMENSIONAL CALCULATIONS
PHOTOELECTRON SPECTROSCOPY
POTENTIALS
PULSES
SCHROEDINGER EQUATION
TIME DEPENDENCE
CALCULATION METHODS
DIFFERENTIAL EQUATIONS
ELECTRON SPECTROSCOPY
EQUATIONS
EVALUATION
MATHEMATICAL SOLUTIONS
PARTIAL DIFFERENTIAL EQUATIONS
SPECTROSCOPY
WAVE EQUATIONS