Year: 2019
Type: article
Abstract: We present a theoretical study of bound-free electron-positron pair production in the interaction of $\ensuremath{\gamma}$ rays with bare ions. Special attention is paid to the longitudinal polarization of both the emitted positrons and the produced hydrogenlike ions. To evaluate this polarization we employed exact solutions of the relativistic Dirac equation and treat the electron-photon coupling within the framework of first-order perturbation theory. Detailed calculations have been performed for both low- and high-$Z$ ions and for a wide range of photon energies. The results of these calculations suggest that bound-free pair production can be a source of strongly polarized positrons and ions.
Source: Physical Review A
Language: English
Topic: Atomic and Molecular Physics
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2957438431