XUV spectroscopic characterization of warm dense aluminum plasmas generated by the free-electron-laser FLASH

Autor:	Gianluca Gregori, Thomas Dzelzainis, H. J. Lee, Richard W. Lee, Tilo Döppner, Ingo Uschmann, Justin Wark, David Riley, Siegfried Glenzer, Sven Toleikis, T. Whitcher, Sam Vinko, Bob Nagler, Art J. Nelson, Frank B. Rosmej, Carsten Fortmann, Eric Galtier, E. Förster, R. R. Fäustlin, Thomas Tschentscher, Tomáš Burian, Nikita Medvedev, Ciaran Lewis, Libor Juha, Ulf Zastrau, Jaromir Chalupsky
Rok vydání:	2012
Předmět:	Materials science Bremsstrahlung Free-electron laser Saturable absorption Photon energy Warm dense matter Condensed Matter Physics Laser Atomic and Molecular Physics and Optics law.invention law Electrical and Electronic Engineering Atomic physics Spectroscopy Absorption (electromagnetic radiation)
Zdroj:	Laser and Particle Beams. 30:45-56
ISSN:	1469-803X 0263-0346
Popis:	We report on experiments aimed at the generation and characterization of solid density plasmas at the free-electron laser FLASH in Hamburg. Aluminum samples were irradiated with XUV pulses at 13.5 nm wavelength (92 eV photon energy). The pulses with duration of a few tens of femtoseconds and pulse energy up to 100 µJ are focused to intensities ranging between 1013 and 1017 W/cm2. We investigate the absorption and temporal evolution of the sample under irradiation by use of XUV and optical spectroscopy. We discuss the origin of saturable absorption, radiative decay, bremsstrahlung and atomic and ionic line emission. Our experimental results are in good agreement with simulations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b6f3fe51ee4b11cdcf7520640e7eec5 https://doi.org/10.1017/s026303461100067x Zobrazit plný text záznamu