title: Temperature and Kalpha-yield radial distributions in laser-produced solid-density plasmas imaged with ultrahigh-resolution x-ray spectroscopy.
abstract: We study warm dense matter formed by subpicosecond laser irradiation at several 10(19) W/cm(2) of thin Ti foils using x-ray spectroscopy with high spectral (E/DeltaE approximately 15,000) and one-dimensional spatial (Deltax=13.5 microm) resolutions. Ti Kalpha doublets modeled by line-shape calculations are compared with Abel-inverted single-pulse experimental spectra and provide radial distributions of the bulk-electron temperature and the absolute-photon number Kalpha yield in the target interiors. A core with approximately 40 eV extends homogeneously up to ten times the laser-focus size. The spatial distributions of the bulk-electron temperature and Kalpha yield are strongly correlated.
authors.affiliation: Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität, Max-Wien-Platz 1, 07743 Jena, Germany. ulf.zastrau@uni-jena.de
authors.forename: U
authors.initials: U
authors.lastname: Zastrau
authors.forename: P
authors.initials: P
authors.lastname: Audebert
authors.forename: V
authors.initials: V
authors.lastname: Bernshtam
authors.forename: E
authors.initials: E
authors.lastname: Brambrink
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authors.lastname: Kämpfer
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authors.lastname: Kroupp
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authors.initials: R
authors.lastname: Loetzsch
authors.forename: Y
authors.initials: Y
authors.lastname: Maron
authors.forename: Yu
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authors.lastname: Ralchenko
authors.forename: H
authors.initials: H
authors.lastname: Reinholz
authors.forename: G
authors.initials: G
authors.lastname: Röpke
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authors.initials: A
authors.lastname: Sengebusch
authors.forename: E
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authors.lastname: Stambulchik
authors.forename: I
authors.initials: I
authors.lastname: Uschmann
authors.forename: L
authors.initials: L
authors.lastname: Weingarten
authors.forename: E
authors.initials: E
authors.lastname: Förster