Relativistic description of two-photon bremsstrahlung process within the framework of delta-approximation
نویسنده
چکیده
Approximate approach for description of two-photon bremsstrahlung emitted by the relativistic projectile scattered in a spherically-symmetric filed of the target is suggested. It based on the accurate treatment of the analytical structure of singularities in relativistic one-photon free-free matrix elements. For the case of Coulomb field of the target the closed-form analytical expressions for amplitude and cross section of process with accounting for the radiation retardation are presented. Results obtained within the frame of the proposed approach are compared with available experimental data as well as with results of independent theoretical calculations. It is demonstrated that accounting for relativistic effects lead to noticeable change of spectral-angular characteristics of two-photon bremsstrahlung. ‡ E-mail: [email protected] Relativistic description of two-photon bremsstrahlung process. . . 2
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