DOI QR코드

DOI QR Code

Efficient keV X-ray Generation from Irradiation of in-situ Produced Silver Clusters by Ti:sapphire Laser Pulses

  • Chakravarty, U. (Laser Plasma Division, Raja Ramanna Centre for Advanced Technology) ;
  • Naik, P.A. (Laser Plasma Division, Raja Ramanna Centre for Advanced Technology) ;
  • Kumbhare, S.R. (Laser Plasma Division, Raja Ramanna Centre for Advanced Technology) ;
  • Gupta, P.D. (Laser Plasma Division, Raja Ramanna Centre for Advanced Technology)
  • 투고 : 2008.12.08
  • 심사 : 2009.01.30
  • 발행 : 2009.03.25

초록

An experimental study of energy absorption and x-ray emission from ultrashort laser pulse irradiation of in-situ produced solid clusters has been performed. Silver clusters produced by a 30 mJ, 300 ps laser pulse were irradiated up to an intensity of $3{\times}10^{17}\;W/cm^2$ by a 70 mJ, 45 fs compressed laser pulse from the same Ti:sapphire laser. Absorption of the laser light exceeding 70% was observed, resulting in an x-ray yield (>1 keV) of ${\sim}60{\mu}J$ pulse. This may constitute a much simpler means of intense x-ray generation using ultrashort laser pulses as compared to the irradiation of structured / pre-deposited cluster targets, and it offers higher x-ray conversion efficiency than that from gas clusters and planar solid targets.

키워드

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