QUANTUM EFFECTS IN COMPTON BACK SCATTERING

Europe/Rome
Aula B. Touschek (Laboratori Nazionali di Frascati, Via Enrico Fermi 40, Frascati)

Aula B. Touschek

Laboratori Nazionali di Frascati, Via Enrico Fermi 40, Frascati

Via Enrico Fermi 40 00044 Frascati
Description
ABSTRACT

The spontaneous emission by a relativistic electron beam in a Laser wiggler is described as a Compton back scattering process. If the electron's energy is much larger than the photon energy, the Compton frequency shift can be neglected. However the randomness of photons emission originate an electron's Compton random recoil which we model by a finite difference equation for the distribution of the number of the emitted photons and for the electron's momentum recoil. We find that the first is a Poisson distribution as in a coherent field. The second evolve according to a continuous drift-diffusion equation, provided the energy spread of the electron beam is larger the single photon energy. In the opposite limit the momentum distribution is made up by discrete lines equally spaced by the photon momentum. The possibility of observing this novel quantum effect in ELI is discussed.

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