Contribution to the Theory of Bremsstrahlung
in Scattering Media

A. V. Koshelkin

Moscow State Engineering Physics Institute, Moscow, 115409 Russia
e-mail: koshelkn@gpd.mephi.msk.su

Received February 1, 2000

Abstract—Bremsstrahlung of particles in matter is investigated on the basis of a method developed for finding
the two-particle Green’s functions in nonequilibrium media. A closed system of equations for the exact two-
particle Green’s functions in a medium, which completely determined the bremsstrahlung spectrum in matter,
is obtained by summing a series of irreducible diagrams. The radiation of fast charged particles undergoing
multiple elastic collisions in a static medium is investigated in detail. For quite strong scattering in matter, the
spectrum found differs substantially from the spectrum found previously by A. B. Migdal [Dokl. Akad. Nauk
SSSR 96, 49 (1954)] (Landau–Pomeranchuk–Migdal effect). © 2000 MAIK “Nauka/Interperiodica”.

Pleiades Publishing home page | journal home page | top

If you have any problems with this server, contact webmaster.