Temperature Determination Using K(alpha) Spectra from M-shell Ti Ions

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The Compact Multipulse Terawatt (COMET) laser facility at LLNL was used to irradiate Al-coated 2 - 50 {micro}m Ti foils with {approx} 4 x 10{sup 18} W cm{sup -2}, 500 fs, 3-6 J laser pulses. Laser-plasma interactions on the front side of the target generate hot electrons with sufficient energy to excite inner-shell electrons in Ti, creating K{sub {alpha}} emission which has been measured using a focusing spectrometer with spatial resolution (FSSR-1D) aimed at the back surface of the targets. The spatial extent of the emission varies with target thickness, and the high spectral resolution ({lambda}/{Delta}{lambda} {approx} 3800) is sufficient ... continued below

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6 p. (0.2 MB)

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Hansen, S B; Faenov, A Y; Pikuz, T A; Fournier, K B; Shepherd, R; Chen, H et al. March 24, 2005.

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The Compact Multipulse Terawatt (COMET) laser facility at LLNL was used to irradiate Al-coated 2 - 50 {micro}m Ti foils with {approx} 4 x 10{sup 18} W cm{sup -2}, 500 fs, 3-6 J laser pulses. Laser-plasma interactions on the front side of the target generate hot electrons with sufficient energy to excite inner-shell electrons in Ti, creating K{sub {alpha}} emission which has been measured using a focusing spectrometer with spatial resolution (FSSR-1D) aimed at the back surface of the targets. The spatial extent of the emission varies with target thickness, and the high spectral resolution ({lambda}/{Delta}{lambda} {approx} 3800) is sufficient to measure blue shifts in K{sub {alpha}} arising from ionization of near-solid Ti into the 3p subshell. A self-consistent-field model is used to spectroscopically diagnose thermal electron temperatures up to 40 eV in the strongly coupled Ti plasmas.

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6 p. (0.2 MB)

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PDF-file: 6 pages; size: 0.2 Mbytes

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  • Journal Name: Physical Review E; Journal Volume: 72; Journal Issue: 3

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  • Report No.: UCRL-JRNL-210984
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 877875
  • Archival Resource Key: ark:/67531/metadc876060

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • March 24, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • April 17, 2017, 12:14 p.m.

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Hansen, S B; Faenov, A Y; Pikuz, T A; Fournier, K B; Shepherd, R; Chen, H et al. Temperature Determination Using K(alpha) Spectra from M-shell Ti Ions, article, March 24, 2005; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc876060/: accessed September 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.