scholarly journals Spontaneous decay processes in a classical strong low-frequency laser field

2020 ◽  
Vol 102 (1) ◽  
Author(s):  
Mihai Macovei ◽  
Jörg Evers ◽  
Christoph H. Keitel
Keyword(s):  
Laser Field ◽  
Low Frequency ◽  
Spontaneous Decay ◽  
Frequency Laser

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.

Tunnel ionization of H_{2} in a low-frequency laser field: A wave-packet approach

1997 ◽  
Vol 56 (3) ◽  
pp. 2142-2167 ◽  
Author(s):  
T.-T. Nguyen-Dang ◽  
F. Cha⁁teauneuf ◽  
S. Manoli ◽  
O. Atabek ◽  
A. Keller
Keyword(s):  
Wave Packet ◽  
Laser Field ◽  
Low Frequency ◽  
Tunnel Ionization ◽  
Frequency Laser

Coulomb effects in atomic reactions in the presence of a low-frequency laser field

1984 ◽  
Vol 29 (4) ◽  
pp. 2228-2229 ◽  
Author(s):  
Luis F. Saez ◽  
Marvin H. Mittleman
Keyword(s):  
Laser Field ◽  
Low Frequency ◽  
Frequency Laser ◽  
Coulomb Effects

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
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