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Fakulteta za strojništvo, Ljubljana (FSLJ)
  • Measurements of the high pressure ultrasonic wave and the cavitation bubble by optodynamic method
    Petkovšek, Rok ; Močnik, Griša ; Možina, Janez, fizik, 1945-
    Laser induced breakdown in water represents an abrupt high intensity photoacoustic phenomenon. The pressure front that appears at its site represents an ultrasonic shock wave spreading into ... surrounding water. At the same time the cavitation bubble develops. The effect of both is particularly important in ocular microsurgery, where Q-switched lasers are used to vaporize the tissue in procedures such as posterior capsulotomy. Formation of the cavitation bubble and the propagation of the sound wave were analyzed by an optodynamic experimental set-up. It is based on two-dimensional scanning technique using a beam deflection probe. From the beam deflection probe signals the time of flights for both the sound wave and the cavitation bubble were determined. By using Hugoniot curves and the two-dimensional time of flight data field the pressure amplitude in the front was estimated. Simultaneously the expansion of the cavitation bubble was also analyzed and its energy was determined.
    Vir: Fluid phase equilibria. - ISSN 0378-3812 (Letn. 256, št. 1/2, 2007, str. 158-162)
    Vrsta gradiva - članek, sestavni del
    Leto - 2007
    Jezik - angleški
    COBISS.SI-ID - 9935643

    Povezava(-e):

    http://dx.doi.org/10.1016/j.fluid.2007.01.004

    Dostop do polnega teksta samo za člane



vir: Fluid phase equilibria. - ISSN 0378-3812 (Letn. 256, št. 1/2, 2007, str. 158-162)

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