Exotic x-ray emission from dense plasmas

0450856 - FZÚ 2016 RIV GB eng J - Journal Article
Rosmej, F.B. - Dachicourt, R. - Deschaud, B. - Khaghani, D. - Dozières, M. - Šmíd, Michal - Renner, Oldřich
Exotic x-ray emission from dense plasmas.
Journal of Physics B-Atomic Molecular and Optical Physics. Roč. 48, č. 22 (2015), s. 224005. ISSN 0953-4075. E-ISSN 1361-6455
R&D Projects: GA MŠMT ED1.1.00/02.0061
EU Projects: European Commission(XE) 284464 - LASERLAB-EUROPE
Grant - others:ELI Beamlines(XE) CZ.1.05/1.1.00/02.0061; AVČR(CZ) M100101208
Institutional support: RVO:68378271
Keywords : hollow ions * x-ray spectroscopy * atomic physics
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 1.833, year: 2015

Exotic x-ray emission from dense matter is identified as the complex high intensity satellite emission from autoionizing states of highly charged ions. Among a vast amount of possible transitions, double K-hole hollow ion x-ray emission is of exceptional interest due to its advanced diagnostic potential for matter under extreme conditions where opacity and radiation fields play important roles. Transient ab initio simulations identify driving mechanisms of hollow ion emission. We demonstrated that charge exchange of intermixing inhomogenous plasmas as well as collisions driven by suprathermal electrons are possible mechanisms to populate HIs to observable levels in dense plasmas. Although the hollow ion x-ray transitions were repeatedly identified in many other cases of dense optical laser produced plasmas on the basis of atomic structure calculations, their origin remains one of the last holy grails of high intensity laser–matter interaction.
Permanent Link: http://hdl.handle.net/11104/0252056