On the bifurcation of the circular polarisation of the fifth and seventh pump-field harmonics generated in the plasma produced by the ionisation of a gas of excited hydrogen-like atoms

Journal Article · Wed May 31 00:00:00 EDT 2006 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2006V036N05ABEH013206· OSTI ID:21456893

Silin, Viktor P; Silin, Pavel V ^[1]

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1. P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

Within the framework of the Bethe ionisation model we considered theoretically the dependences of the degree of circular polarisation of the fifth and seventh pump-field harmonics, which are generated due to bremsstrahlung, on the electric intensity of the pump field, the degree of its circular polarisation, and the principal quantum number of the excited states of hydrogen-like atoms of a gas ionised by the pump field. A bifurcation of the circular polarisation of these harmonics was discovered, which confirms our previous hypothesis that this effect is common for harmonics generated due to the bremsstrahlung in the pump field when the plasma electrons oscillate in this field. We determined how the relationships under consideration are scaled with V{sub E}n/V{sub Z}, the product of electron oscillation velocity and the principal quantum number of the excited electron divided by the Coulomb velocity. (interaction of laser radiation with matter. laser plasma)

• OSTI ID: 21456893
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 36, Issue 5; Other Information: DOI: 10.1070/QE2006v036n05ABEH013206; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BIFURCATION
BREMSSTRAHLUNG
ELECTRONS
EXCITED STATES
HARMONIC GENERATION
HYDROGEN
IONIZATION
LASER RADIATION
OSCILLATIONS
PLASMA
POLARIZATION
PUMPING
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
FERMIONS
FREQUENCY MIXING
LEPTONS
NONMETALS
RADIATIONS