Taking into account electron-electron collisions in classical absorption of short laser pulses

Abstract

The previously derived universal expression for the plasma permittivity is used to solve the problem of absorption of a short laser pulse incident on a semibounded solid-dense plasma. It is shown that the results of the exact theory may differ significantly from those obtained with the generally accepted models, especially in a weakly collisional regime corresponding to temperatures in the range 0.5-1 keV.