On multiphoton bremsstrahlung

Kinetic equations for the process of multiphoton bremsstrahlung of electron s in matter are used to derive the equations for the moments of the distrib utions of electrons over the number of emitted photons and over the energy loss. The equations for the moments are solved in the continuous slowing do wn approximation. It is shown that the moments of multiphoton distributions can be expressed in terms of the moments of the macroscopic differential c ross section of the process. The results of analytical calculations have be en compared with data of the Monte Carlo simulation. (C) 1999 Published by Elsevier Science B.V. All rights reserved.