Journal article
Formation of excited states in high-Z helium-like systems
Publication Details
Authors: | Fritzsche, S.; Stöhlker, T.; Brinzanescu, O.; Fricke, B. |
Publication year: | 2000 |
Journal: | Hyperfine Interactions |
Pages range : | 257-262 |
Volume number: | 127 |
ISSN: | 0304-3843 |
Abstract
High-Z helium-like ions represent the simplest multi-electron systems for studying the interplay between electron-electron correlations, relativistic as well as quantum electrodynamical effects in strong fields. In contrast to the adjacent lithium-like ions, however, almost no experimental information is available about the excited states in the high-Z domain of the helium sequence. Here, we present a theoretical analysis of the X-ray production and decay dynamics of the excited states in helium-like uranium. Emphasis has been paid particularly to the formation of the P-3(0) and P-3(2) levels by using electron capture into hydrogen-like U91+. Both states are of interest for precise measurements on high-Z helium-like ions in the future.
High-Z helium-like ions represent the simplest multi-electron systems for studying the interplay between electron-electron correlations, relativistic as well as quantum electrodynamical effects in strong fields. In contrast to the adjacent lithium-like ions, however, almost no experimental information is available about the excited states in the high-Z domain of the helium sequence. Here, we present a theoretical analysis of the X-ray production and decay dynamics of the excited states in helium-like uranium. Emphasis has been paid particularly to the formation of the P-3(0) and P-3(2) levels by using electron capture into hydrogen-like U91+. Both states are of interest for precise measurements on high-Z helium-like ions in the future.
