Bremsstrahlung of a vector particle in a nuclear field

The density of the bremsstrahlung differential cross section of a vector particle in the Coulomb field of an atomic nucleus is calculated in the Born approximation of perturbation theory. The spectral distribution of photons in nonrelativistic and highly relativistic particle-energy regions is obtained by integration.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 4, pp. 98–101, April, 1979.