Influence of plasma environments on photoionization of atoms

Within the framework of the method of the complex-coordinate rotation, a computational scheme has been developed to investigate influence of plasma environments on photoionization for atoms and ionized atoms. The Debye screening potential is used to describe effects of the plasma environments. Photo...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physics of plasmas 2004-04, Vol.11 (4), p.1695-1700
Hauptverfasser: Zhao, L. B., Ho, Y. K.
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Within the framework of the method of the complex-coordinate rotation, a computational scheme has been developed to investigate influence of plasma environments on photoionization for atoms and ionized atoms. The Debye screening potential is used to describe effects of the plasma environments. Photoionization cross sections are reported for hydrogen and hydrogen-like helium in the ground states and compared with the available data. Investigation shows that near the ionization thresholds, photoionization is sensitive to the plasma screening. The strong screening remarkably alters the photoionization cross sections near the ionization thresholds. It is concluded that a great error may arise if photoionization cross sections for isolated atoms or ions are employed for numerical simulations of astrophysical and laboratory plasmas.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.1650351