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Resonant spontaneous bremsstrahlung by an electron scattered by a nucleus in the field of pulsed light wave is theoretically investigated. The bremsstrahlung cross section contains a resonant peak. It is demonstrated, that the resonant cross section of the spontaneous bremsstrahlung may be several orders of magnitude greater than the corresponding cross section in the external field absence. Obtained...
Resonant two-photon annihilation of an electron-positron pair in the field of a moderately strong circularly polarized wave is investigated theoretically. The partial cross-section is derived. It is shown that the resonant differential cross-section can differ from that in the absence of the external field.
Outside the framework of the dipole approximation (with an accuracy of about v/c) the effective interaction force between stripped uranium nuclei in the presence pulsed field of two laser waves is theoretically studied. Possibility of essential slowing-down of uranium nuclei after interaction with each other is obtained. The given phenomenon is stable, concerning minor changes of initial conditions...
The resonant scattering of a photon by an electron through direct diagram was studied in the low intense pulsed plane wave. The resonant amplitude and the cross-section were obtained. It is shown that the resonant cross-section is several orders of magnitude greater than the nonresonant one.
The process of photon emission, that accompany photon pair production in strong magnetic field has been studied in nonresonant case. Angle dependence and dependence on final photon polarization are analyzed for this process. Total probability for the nonresonant process of photon emission 106 s-1 is three order of magnitude less, than resonant one.
Influence of spin-polarization effects on the intensity of synchrotron emission from magnetized electron-positron plasma is discussed. In the plasma generated by pair production spin states have polarization-dependent spin bias, whereas in the case of thermodynamical preparation of spin states they are equally populated. It is shown, that radiation intensities from polarized and unpolarized particles...
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