Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Spectra of Optical-field Ionized Gases by a Femtosecond Ti:Sapphire Laser

  • Mock, Tomas (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Shin, Hyun-Joon (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Cha, Yong-Ho (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Lee, Dong-Gun (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Hong, Kyung-Han (Department of Physics, Korea Advanced Institute of Science and Technology) ;
  • Nam, Chang-Hee (Department of Physics, Korea Advanced Institute of Science and Technology)
  • Received : 1998.07.10
  • Published : 1998.09.01
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Abstract

We report on the spectroscopic investigation of optical-field ionized plasmas in the soft X-ray spectral region. The experiment was carried out by focusing pulses of the high-power Ti:Sapphire laser with an energy of ~ 40 mJ and time duration of ~30 fs into a gas jet of krypton, xenon, and argon from a pulsed nozzle. Strong soft X-ray emission on lines from ionic stages of $Kr^{7+} , Kr^{8+} , Xe^{7+} , Ar^{7+} , and Ar^{8+}$ is reported. The experimental result was found to be in good agreement with theoretical prediction.

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