Ultraviolet prepulse for enhanced x-ray emission and brightness from droplet-target laser plasmas

Research output: Contribution to journalArticle


We show that an ultraviolet prepulse significantly enhances the water-window x-ray emission and brightness for a droplet-target laser plasma. By combining a 65 mJ, 120 ps, lambda = 532 nm main pulse with an up to 3 mJ prepulse, the emitted x-ray photon flux may be increased more than eight times. The resulting C VI lambda = 3.37 nm line emission is more than 3 x 10(12) photons/sr . pulse, corresponding to a conversion efficiency above 3%/line. The integrated spectral brightness is increased two times and is found to reach its maximum for different prepulse parameters than those resulting in maximum photon flux. (C) 1996 American Institute of Physics.


  • M Berglund
  • L Rymell
  • H. M Hertz
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Atom and Molecular Physics and Optics
Original languageEnglish
Pages (from-to)1683-1685
JournalApplied Physics Letters
Issue number12
Publication statusPublished - 1996
Publication categoryResearch
Externally publishedYes