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Decay of cystalline order and equilibration during the solid-to-plasma transition induced by 20-fs microfocused 92-eV free-electron-laser pulses
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SYSNO ASEP 0362892 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Decay of cystalline order and equilibration during the solid-to-plasma transition induced by 20-fs microfocused 92-eV free-electron-laser pulses Author(s) Galtier, E. (FR)
Rosmej, F.B. (FR)
Dzelzainis, T. (GB)
Riley, D. (GB)
Khattak, F.Y. (PK)
Heimann, P. (US)
Lee, R. W. (US)
Nelson, A.J. (US)
Vinko, S.M. (GB)
Whitcher, T. (GB)
Wark, J. S. (GB)
Tschentscher, T. (DE)
Toleikis, S. (DE)
Fäustlin, R.R. (DE)
Sobierajski, R. (NL)
Jurek, M. (PL)
Juha, Libor (FZU-D) RID, ORCID, SAI
Chalupský, Jaromír (FZU-D) RID, ORCID
Hájková, Věra (FZU-D) RID, ORCID
Kozlová, Michaela (FZU-D) RID, ORCID
Krzywinski, J. (US)
Nagler, B. (US)Source Title Physical Review Letters. - : American Physical Society - ISSN 0031-9007
Roč. 106, č. 16 (2011), "164801-1"-"164801-4"Number of pages 4 s. Language eng - English Country US - United States Keywords X-ray lasers ; free-electron lasers ; X-ray emission spectroscopy Subject RIV BH - Optics, Masers, Lasers R&D Projects GAP208/10/2302 GA ČR - Czech Science Foundation (CSF) LA08024 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) IAAX00100903 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) ME10046 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100523 - FZU-D (2005-2011) UT WOS 000290095300008 DOI 10.1103/PhysRevLett.106.164801 Annotation We have studied a solid-to-plasma transition by irradiating Al foils with the FLASH free electron laser at intensities up to 1016 W/cm2. Intense XUV self-emission shows spectral features that are consistent with emission from regions of high density, which go beyond single inner-shell photoionization of solids. Characteristic features of intrashell transitions allowed us to identify Auger heating of the electrons in the conduction band occurring immediately after the absorption of the XUV laser energy as the dominant mechanism. A simple model of a multicharge state inverse Auger effect is proposed to explain the target emission when the conduction band at solid density becomes more atomiclike as energy is transferred from the electrons to the ions. This allows one to determine, independent of plasma simulations, the electron temperature and density just after the decay of crystalline order and to characterize the early time evolution. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2012
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