Excitation-autoionization processes in electron-impact ionization ofAu68+

Autor:	M. H. Chen, K.J. Reed, D.L. Moores
Rok vydání:	1990
Předmět:	Physics Autoionization Ionization Physics::Atomic and Molecular Clusters Radiative transfer Physics::Atomic Physics Electron Atomic physics Collisional excitation Atomic and Molecular Physics and Optics Electron ionization Charged particle Ion
Zdroj:	Physical Review A. 41:550-553
ISSN:	1094-1622 1050-2947
DOI:	10.1103/physreva.41.550
Popis:	Relativistic electron-impact ionization cross sections have been calculated for Au{sup 68+}. Direct ionization cross sections were computed using a relativistic distorted-wave method. Relativistic distorted-wave electron collisional excitation cross sections and detailed relativistic radiative and Auger rates were calculated in order to determine the contribution of excitation-autoionization processes. Because radiative channels are the predominant decay modes for highly charged heavy ions, the effects of excitation-autoionization processes were expected to be small for Au{sup 68+}. However, we found that these processes enhance the direct ionization cross sections by a factor of 4. This enhancement may be observed in experiments on the electron-beam ion trap in the near future.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1365a9d6a86dc0cd76598bb1d4271eac https://doi.org/10.1103/physreva.41.550 Zobrazit plný text záznamu