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Dielectronic satellite emission from a solid-density Mg plasma: relationship to models of ionisation potential depression

Authors :
Pérez-Callejo, G.
Gawne, T.
Preston, T. R.
Hollebon, P.
Humphries, O. S.
Chung, H. -K.
Dakovski, G. L.
Krzywinski, J.
Minitti, M. P.
Burian, T.
Chalupský, J.
Hájková, V.
Juha, L.
Vozda, V.
Zastrau, U.
Vinko, S. M.
Rose, S. J.
Wark, J. S.
Pérez-Callejo, G.
Gawne, T.
Preston, T. R.
Hollebon, P.
Humphries, O. S.
Chung, H. -K.
Dakovski, G. L.
Krzywinski, J.
Minitti, M. P.
Burian, T.
Chalupský, J.
Hájková, V.
Juha, L.
Vozda, V.
Zastrau, U.
Vinko, S. M.
Rose, S. J.
Wark, J. S.
Publication Year :
2023

Abstract

We report on experiments where solid-density Mg plasmas are created by heating with the focused output of the Linac Coherent Light Source x-ray free-electron-laser. We study the K-shell emission from the Helium and Lithium-like ions using Bragg crystal spectroscopy. Observation of the dielectronic satellites in Lithium-like ions confirms that the M-shell electrons appear bound for these high charge states. An analysis of the intensity of these satellites indicates that when modelled with an atomic-kinetics code, the ionisation potential depression model employed needs to produce depressions for these ions which lie between those predicted by the well known Stewart-Pyatt and Ecker-Kroll models. These results are largely consistent with recent Density Functional Theory calculations.

Details

Database :
OAIster
Publication Type :
Electronic Resource
Accession number :
edsoai.on1425541846
Document Type :
Electronic Resource
Full Text :
https://doi.org/10.1103.PhysRevE.109.045204