Photoionization of hydrogen-like ions in dense quantum plasmas

2017/06/01 by Y. Y. Qi, J. G. Wang, R. K. Janev · 4 citations
Physics and Astronomy · #Atomic and Molecular Physics #Cold Atom Physics and Bose-Einstein Condensates #Dust and Plasma Wave Phenomena

paper · doi:10.1063/1.4985658

openalex publication_date 2017/06/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29

Abstract

The photoionization of hydrogen-like ions in n≤3 bound states, embedded in cold, dense quantum plasmas, is investigated in detail. The electron energies and wave functions for the bound and continuum states are determined by numerically solving the scaled Schrödinger equation by the fourth-order symplectic integration scheme. The monotonic behavior of the photoionization cross section for a pure Coulomb potential is dramatically changed due to the plasma screening effects described by the cosine-Debye-Hückel potential. In the region of low photoelectron energies, the photoionization cross section, besides the usual Wigner-law threshold behavior, exhibits a rich structure of shape and virtual-state resonances when the plasma screening parameter takes values around the critical screening parameter for which a bound state enters the continuum. It is observed that a shape resonance is followed by a Cooper minimum in the photoionization cross section when the principal quantum number of continuum quasi-bound state is equal to the one of the initial bound states.

Citations

• Bound-bound transitions in hydrogen-like ions in dense quantum plasmas

Cited by

• Sensitive dependence of photoionization for highly charged H-like ion on the plasma environments
• Electron scattering on finite-temperature quantum screened potential
• Free-free Gaunt factors of hydrogen-like ions in dense quantum plasmas
• Plasma Screening Models Based on the Single-Atom Approximation and Their Applications in Atomic Structure Calculations

Related

• Bound-bound transitions in hydrogen-like ions in dense quantum plasmas
• Sensitive dependence of photoionization for highly charged H-like ion on the plasma environments
• One- and two-photon ionization of hydrogen atom embedded in Debye plasmas
• Free-free Gaunt factors of hydrogen-like ions in dense quantum plasmas
• Spectral properties of hydrogen-like ions in finite-temperature quantum plasmas