Speaker
Prof.
Alexander Potylitsyn
(Tomsk Polytechnic University)
Description
An electron passing through a counter propagated laser flash can interact with a few laser photons with emission a hard photon in each collision event. In contrast with the well-know nonlinear Compton backscattering (CBS) process where an initial electron “absorbs” a few laser photons and emits one hard photon the above mentioned process may be named as multiple CBS process. Physics of such a process is similar to electron radiation in a long undulator for ultrarelativistic case.
The report represents the results of Monte Carlo simulation of the multiple CBS process. The statistics of emitted hard photons number coincides with Poisson distribution in the case when the energy of initial photon approaches zero, i.e. for the undulator radiation process, that agrees with the result, obtained by Robb G.R.M. and Bonifacio R. [1]. However, rigorous quantum treatment of the process gives continuous energy distribution of final electrons in contrast to a discrete one, obtained in the cited work. The comparison of results obtained by Monte-Carlo simulations with analytical ones based on solution of kinetic equations [2] showed a good agreement between them for the case when an energy of initial photons is much less than electron rest mass. A taking into account of the multiple photon emission by each electron affects a resulting photon spectral distribution significantly.
1. Robb G.R.M. and Bonifacio R., Europhys. Lett. 94 (2011) 34002.
2. A.Kolchuzhkin, A. Potylitsyn, S. Strokov et al., Nucl. Instr. and Meth. B 201 (2003) 307.
Primary author
Prof.
Alexander Potylitsyn
(Tomsk Polytechnic University)
Co-author
Prof.
A. KOL’CHUZHKIN
(Moscow Sate Technological University)
