https://doi.org/10.1140/epjd/e2004-00119-x
Plasma radiation spectra in the presence of static electric and high-frequency radiation fields
1
Istituto Nazionale per la Fisica della Materia and Dipartimento di Fisica e Tecnologie
Relative, Universitá di Palermo, Viale delle Scienze, edificio 18, 90128 Palermo, Italy
2
P.N. Lebedev Physical Institute, Leninsky pr. 53, 119991 Moscow, Russia
Corresponding author: a zarcone@unipa.it
Received:
4
December
2003
Revised:
3
May
2004
Published online:
14
September
2004
Harmonics generation of high-frequency radiation in a plasma embedded in a constant electric field is investigated theoretically. It is shown that the electron directed motion due to the static electric field yields the appearance in the plasma emission spectrum of high-frequency radiation even harmonics. The conditions are established when the even harmonics generation is as effective as that of the odd ones. At variance with the odd harmonics, the even harmonics polarization plane is found to rotate with respect to that of the fundamental field. The basic dependencies concerning the rotation angle and the generation efficiency on the plasma and field parameters are established.
PACS: 52.50.Jm – Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.) / 52.38.Dx – Laser light absorption in plasmas (collisional, parametric, etc.)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004
