Spontaneous vacuum decay in low-energy collisions of heavy nuclei beyond the monopole approximation

Positron creation probabilities as well as energy and angular distributions of outgoing positrons in slow collisions of two identical heavy nuclei are obtained within the two-center approach beyond the monopole approximation. The time-dependent Dirac equation for positron wave functions is solved with the help of the generalized pseudospectral method in modified prolate spheroidal coordinates adapted for variable internuclear separation. Depending on the nuclear charge, the results are obtained for both subcritical and supercritical regimes of the positron creation. The signatures of transition to the supercritical regime in the total positron creation probabilities and energy spectra are discussed. The angular distributions of emitted positrons demonstrate a high degree of isotropy. Published by the American Physical Society 2024

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Positron Supercritical Resonances and Spontaneous Positron Creation in Slow Collisions of Heavy Nuclei

Telnov,

Dulaev,

Kozhedub

et al. 2024

Phys. Atom. Nuclei

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Spontaneous vacuum decay in low-energy collisions of heavy nuclei beyond the monopole approximation

Cited by 4 publications

References 56 publications

Pushing the limits of the periodic table — A review on atomic relativistic electronic structure theory and calculations for the superheavy elements

Pushing the limits of the periodic table — A review on atomic relativistic electronic structure theory and calculations for the superheavy elements

Angular and energy distributions of positrons created in subcritical and supercritical slow collisions of heavy nuclei

Positron Supercritical Resonances and Spontaneous Positron Creation in Slow Collisions of Heavy Nuclei

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