Electron refluxing and K-shell line emission from Ti foils irradiated with sub-picosecond laser pulses at 527nm

Gagik Nersisyan, David Riley, Ciaran Lewis, Elena Nedanovska, Thomas Dzelzainis, Ryan Nicholl, Mikako Makita, Killian McKeever, Steven White, Brendan Kettle, Gina Williams

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We present data on emission of K-shell radiation from Ti foils irradiated with subpicosecond pulses of second harmonic radiation (527 nm) from the TARANIS laser system at intensities of up to 1018 Wcm-2. The data are used to demonstrate that a resonance absorption type mechanism is responsible for absorption of the laser light and to estimate fast electron temperatures of 30–60 keV that are in broad agreement with expectation from models of absorption for a steep density gradient. Data taken with resin-backed targets are used to demonstrate clear evidence of electron refluxing even at the modest fast electron temperatures inferred.
Original languageEnglish
Article number056415
Number of pages7
JournalPhysical Review E
Issue number5
Publication statusPublished - 29 May 2012

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability

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