Emission and dose characterization of the 1 kHz repetition rate high-Z metal K α source driven by 20 mJ femtosecond pulses

Research output: Contribution to journalArticle


We present the hard X-ray generation of K α lines in high-Z elements – platinum and tungsten – targets using the kHz repetition rate TW-class 850 nm, 10 fs laser pulses. The estimated Pt and W Kα1 X-ray photon flux from the recorded spectrum was 1.3 × 10 7 and 1.4 × 10 7  photons/s, respectively, in 2π solid angle. The calculated values of the photon conversion efficiency were 1.3 × 10 - 8 for Pt Kα1 and 9 × 10 - 9 for W Kα1. The additional experimental bremsstrahlung-induced dose measurements and modeling were performed. The correspondence between experimental and modeling data for the dose evaluation was found. The dose rate up to 25 μ Sv/h was measured on the top of the X-ray generation chamber.


  • Jonas Reklaitis
  • Vytenis Barkauskas
  • Artūras Plukis
  • Vitalij Kovalevskij
  • Mindaugas Gaspariūnas
  • Darius Germanas
  • Jevgenij Garankin
  • Tomas Stanislauskas
  • Kęstutis Jasiūnas
  • Vidmantas Remeikis
External organisations
  • Center for Physical Sciences and Technology, Lithuania
  • Light Conversion Ltd.
  • EKSPLA Ltd.
Original languageEnglish
Article number41
JournalApplied Physics B: Lasers and Optics
Issue number3
Publication statusPublished - 2019 Mar 1
Publication categoryResearch
Externally publishedYes