Resonant potential scattering in an intense low-frequency laser field

1987 ◽  
Vol 20 (12) ◽  
pp. 2843-2852 ◽  
Author(s):  
D B Milosevic ◽  
P S Krstic
Keyword(s):  
Laser Field ◽  
Low Frequency ◽  
Potential Scattering ◽  
Frequency Laser

Potential scattering in a low-frequency laser field

1984 ◽  
Vol 17 (6) ◽  
pp. 1027-1042 ◽  
Author(s):  
C Leone ◽  
P Cavaliere ◽  
G Ferrante
Keyword(s):  
Laser Field ◽  
Low Frequency ◽  
Potential Scattering ◽  
Frequency Laser

A simple generalization of the Kroll–Watson relation

1992 ◽  
Vol 70 (5) ◽  
pp. 322-329 ◽  
Author(s):  
F. Ehlotzky
Keyword(s):  
Radiation Field ◽  
Laser Field ◽  
Low Frequency ◽  
Potential Scattering ◽  
Nonrelativistic Approximation ◽  
Simple Generalization ◽  
Frequency Laser ◽  
Watson Theorem ◽  
Space Dependence

We present a simple generalization of the Kroll–Watson theorem for the potential scattering of electrons in a low-frequency laser field. This generalization includes the space–dependence of the radiation field in a nonrelativistic approximation and our results apply, in particular, if (i) the electron velocities are comparatively low so that terms of the order β2 may be neglected, and (ii) the laser intensities are relatively high, requiring the inclusion of the space–dependence of the radiation field.

THEORY OF BARRIER-SUPPRESSION IONIZATION OF ATOMS

1995 ◽  
Vol 04 (04) ◽  
pp. 775-798 ◽  
Author(s):  
V. P. KRAINOV
Keyword(s):  
Laser Field ◽  
Multiphoton Ionization ◽  
Low Frequency ◽  
Ionization Probability ◽  
Theoretical Description ◽  
Tunneling Ionization ◽  
Theoretical Approaches ◽  
Frequency Laser ◽  
Energy And Angular Distributions ◽  
Analytical Expressions

The theoretical description of the ionization of an atom (ion) by external electromagnetic radiation up to now concerned two alternative situations; multiphoton ionization and tunneling ionization. For both cases the formulas describing the ionization probability when the intensity of the laser field is not too strong are well known. However, if the field is strong, then there exists a new channel; the so-called barrier-suppression (or above-barrier) ionization of the atom. How does this process occur? It is obvious that barrier-suppression ionization and sub-barrier tunneling ionization by low-frequency laser field transform smoothly into one another as the field strength F is varied near the value of the barrier-suppression field F BSI . This paper contains a review of various theoretical approaches developed during the last few years, especially analytical considerations. Some new semi-analytical expressions for ionization rates, energy and angular distributions of ejected electrons are also derived.

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