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physics.atom-ph2025
Bound-free electron-positron pair production in combined Coulomb and constant crossed electromagnetic fields: a Schwinger-like process with intrinsic assistance
S. Remme, A. Eckey, S. Villalba-Chávez +2
The bound-free channel of electron-positron pair production by a highly charged bare ion in the presence of a strong constant crossed electromagnetic field is studied. To calculate…
physics.atom-ph2025
Phenomenological rate formulas for over-barrier ionization of hydrogen and helium atoms in strong constant electric fields
S. Remme, A. B. Voitkiv, G. Pretzler +1
Nonrelativistic over-barrier ionization (OBI) of atoms in strong electric fields is studied, focussing on hydrogen and helium as concrete examples. Our goal is, on the one hand, to…