Energy transfer from a laser pulse to a blast wave in reduced-pressure air atmospheres

DOI PDF 被引用文献16件
  • Koichi Mori
    Department of Advanced Energy, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, Japan
  • Kimiya Komurasaki
    Department of Advanced Energy, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, Japan
  • Yoshihiro Arakawa
    Department of Aeronautics and Astronautics, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, Japan

抄録

<jats:p>Focusing a transversely excited atmospheric CO2 laser beam in air atmospheres induced a blast wave. The kinetic energy of a laser-induced blast wave was determined from shadowgraph images of shock wave expansion. Results showed that the fraction of input laser energy that is converted into the blast wave energy decreased from 0.45 to 0.2 concomitant with the decrease in ambient pressure from 100 to 10 kPa. Also, it was insensitive to input laser energy from 4 to 13 J.</jats:p>

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