BREMSSTRAHLUNG AND PAIR PRODUCTION AT HIGH ENERGIES IN CONDENSED MEDIA

The effect of multiple scattering on bremsstrahlung and pair production is considered. The probability of these processes decreases appreciably at energies -- 10/sup 13/ev. The computation is carried out with the aid of the density matrix. Equations are derived for the probability of pair production and bremsstrahlumg per unit path for electrons and quanta of arbitrary energy. (auth)