Generation of laser-pulse-field harmonics in a gas upon impact ionisation of atoms

Journal Article · Wed Oct 31 04:00:00 EDT 2007 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2007V037N10ABEH013658· OSTI ID:21466744

Kuzelev, M V; Rukhadze, A A ^[1]

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1. A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

The generation of harmonics of a high-power-laser-pulse field in a gas during impact ionisation of atoms by oscillating electrons is studied theoretically. Fields are considered under conditions when the oscillation energy of electrons in the radiation field, remaining nonrelativistic, considerably exceeds the ionisation potential of an atom. In addition, the radiation field was assumed weak compared to the atomic field (E{sub a} = 5.1x10{sup 9} V cm{sup -1}), which allowed us to neglect the field ionisation of atoms, taking into account only the impact ionisation of atoms by oscillating electrons. Under such conditions, along with the elastic scattering of electrons, the inelastic scattering of oscillating electrons accompanied by ionisation of gas atoms can make a significant contribution to a nonlinear current induced in the plasma. (special issue devoted to the 25th anniversary of the a.m. prokhorov general physics institute)

• OSTI ID: 21466744
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 10 Vol. 37; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BEAM CURRENTS
CURRENTS
ELASTIC SCATTERING
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
HARMONICS
INELASTIC SCATTERING
IONIZATION
IONIZATION POTENTIAL
LASERS
LEPTONS
NONLINEAR PROBLEMS
OSCILLATIONS
PLASMA
PULSES
SCATTERING