The ELTEST Experiment - Infn

ELTEST 15The frequency of the scattered radiation is mω s with1 + βω s (θ) ≈ ω i1 − β cos θ(2)where ω i is the the frequency of the incident wave and the scattering angleis θ s = π − θ.The evaluation of scattered power for incoherent scattering can be donestarting from the motion of single electron in the laser field (see e.g. Landauand Lifshitz and Jackson) and computing the relevant radiation field. Thedeviation of the motion induced by the laser field from the simple oscillationdriven by the electric field of the laser pulse depends on the parametera = eE 0mω 0 c ≈ 0.22 λ P(r s 1GW )1 2 (3)where E 0 is the electric field amplitude, λ the wavelength of laser radiation,INFN Gr V, Napoli 19/09/05