J. Phys. IV France
Volume 133, June 2006
Page(s) 271 - 275
Publié en ligne 16 juin 2006
Inertial Fusion Sciences and Applications 2005
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 271-275

DOI: 10.1051/jp4:2006133054

Hot electron jets from femtosecond heated plasmas at intensities of 1016-1017 W/cm2

R. Fedosejevs1, 2, C. Serbanescu1, F. Dorchies2, C. Fourment2, C. Bonté2, F. Blasco2, J. Santos2, S. Petit2, D. Romanov1, W. Rozmus1, V.Yu Bychenkov1, 3, C.E. Capjack1 and V. Tikhonchuk2

1  University of Alberta, Edmonton, AB T6G 2V4, Canada
2  Centre Lasers Intenses et Applications (CELIA), Université Bordeaux I, France
3  P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow

Solid target experiments carried out on copper targets with both p- and s-polarized 130 fs Ti:Sapphire laser pulses at intensities of $3
\times 10^{16}$ W/cm2 indicate the presence of hot electron jets with electron energies of 80 to over 250 keV and cone angles of the order of 10 degrees at the higher energies with directions dependent on the incident polarization. For comparison, studies on an Argon cluster jet targets with 50 fs duration Ti:Sapphire laser pulses at vacuum intensity of 1017 W/cm2 indicated no detectable hot electron jet emission with electron energies above 50 keV. A 2D PIC simulation of the p-polarized solid target interaction predicts features similar to those observed experimentally.

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