Time- and space-resolved X-ray absorption spectroscopy of aluminum irradiated by a subpicosecond high-power laser

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

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13 Citations (Scopus)

Abstract

The ionization and recombination dynamics of transient aluminum plasmas was measured using point projection K-shell absorption spectroscopy. An aluminum plasma was produced with a subpicosecond beam of the 100-TW laser at the LULI facility and probed at different times with a picosecond X-ray backlighter created with a synchronized subpicosecond laser beam. Fourier-Domain-Interferometry (FDI) was used to measure the electron temperature at the peak of the heating laser pulse. Absorption X-ray spectra at early times are characteristic of a dense and rather homogeneous plasma, with limited longitudinal gradients as shown by hydrodynamic simulations. The shift of the Al K-edge was measured in the cold dense plasma located at the edge of the heated plasma. From the 1s-2p absorption spectra, the average ionization was measured as a function of time and was also modeled with a collisional-radiative atomic physics code coupled with hydrodynamic simulations.

Original languageEnglish
Pages (from-to)614-626
Number of pages13
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume99
Issue number1-3
DOIs
Publication statusPublished - 1 May 2006

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Keywords

  • Plasma production and heating by laser beams
  • Plasma properties
  • Short pulse laser
  • X-ray absorption spectroscopy

ASJC Scopus subject areas

  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

Cite this

Tzortzakis, S., Audebert, P., Renaudin, P., Bastiani-Ceccotti, S., Geindre, J. P., Chenais-Popovics, C., Nagels, V., Gary, S., Shepherd, R., Girard, F., Matsushima, I., Peyrusse, O., & Gauthier, J. C. (2006). Time- and space-resolved X-ray absorption spectroscopy of aluminum irradiated by a subpicosecond high-power laser. Journal of Quantitative Spectroscopy and Radiative Transfer, 99(1-3), 614-626. https://doi.org/10.1016/j.jqsrt.2005.05.049