Picosecond time-resolved x-ray absorption spectroscopy of ultrafast aluminum plasmas

P. Audebert, P. Renaudin, S. Bastiani-Ceccotti, J. P. Geindre, C. Chenais-Popovics, Stylianos Tzortzakis, V. Nagels-Silvert, R. Shepherd, I. Matsushima, S. Gary, F. Girard, O. Peyrusse, J. C. Gauthier

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Abstract

We have used point-projection K-shell absorption spectroscopy to infer the ionization and recombination dynamics of transient aluminum plasmas. Two femtosecond beams of the 100 TW laser at the LULI facility were used to produce an aluminum plasma on a thin aluminum foil (83 or 50 nm), and a picosecond x-ray backlighter source. The short-pulse backlighter probed the aluminum plasma at different times by adjusting the delay between the two femtosecond driving beams. Absorption x-ray spectra at early times are characteristic of a dense and rather homogeneous plasma. Collisional-radiative atomic physics coupled with hydrodynamic simulations reproduce fairly well the measured average ionization as a function of time.

Original languageEnglish
Article number025004
JournalPhysical Review Letters
Volume94
Issue number2
DOIs
Publication statusPublished - 21 Jan 2005
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Audebert, P., Renaudin, P., Bastiani-Ceccotti, S., Geindre, J. P., Chenais-Popovics, C., Tzortzakis, S., Nagels-Silvert, V., Shepherd, R., Matsushima, I., Gary, S., Girard, F., Peyrusse, O., & Gauthier, J. C. (2005). Picosecond time-resolved x-ray absorption spectroscopy of ultrafast aluminum plasmas. Physical Review Letters, 94(2), [025004]. https://doi.org/10.1103/PhysRevLett.94.025004