Electron-positron pair production in slow collisions of heavy nuclei beyond the monopole approximation

Abstract

Electron-positron pair production in low-energy collisions of heavy nuclei is considered beyond the monopole approximation. The calculation method is based on the numerical solving of the time-dependent Dirac equation with the full two-center potential. Bound-free and free-free pair-production probabilities as well as the energy spectra of the emitted positrons are calculated for the collisions of bare uranium nuclei. The calculations are performed for collision energy near the Coulomb barrier for different values of the impact parameter. The obtained results are compared with the corresponding values calculated in the monopole approximation.

References in corpus (9)

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• Angular and energy distributions of positrons created in subcritical and supercritical slow collisions of heavy nuclei
• Three-dimensional calculations of positron creation in supercritical collisions of heavy nuclei
• The possibility to experimentally determine the structure of a fermionic vacuum in quantum electrodynamics