Europhys. Lett.
Volume 76, Number 1, October 2006
Page(s) 70 - 73
Section Physics of gases, plasmas and electric discharges
Published online 23 August 2006
Europhys. Lett., 76 (1), pp. 70-73 (2006)
DOI: 10.1209/epl/i2006-10221-7

On the "vacuum heating" of plasma in the field of circularly polarized laser beam

V. I. Berezhiani1, 2 and N. L. Shatashvili2

1  Graduate School of Frontier Sciences, The University of Tokyo Kashiwa 277-8561, Chiba, Japan
2  Plasma Physics Department, Andronikashvili Institute of Physics Tbilisi 0177, Georgia

received 12 June 2006; accepted in final form 1 August 2006
published online 23 August 2006

It is shown that collisionless absorption of the circularly polarized intense laser pulses normally impinging on the overdense plasma can lead to the vacuum heating of the electrons at the sharp vacuum-plasma interface. The suggested mechanism could lead to the heating of plasma at the periphery of the laser spot rather than at its center. This fact can be applied for verification of the considered effect in real experimental conditions.

52.38.Dx - Laser light absorption in plasmas (collisional, parametric, etc.).
52.38.Kd - Laser-plasma acceleration of electrons and ions.
52.50.Jm - Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.).

© EDP Sciences 2006