Time‐resolved force sensing and intensified charge‐coupled device (ICCD) imaging techniques were applied to the study of the force generation mechanism for laser ablation of liquids. A Transversely Excited at Atmospheric pressure (TEA) CO2 laser operated at 10.6 μm, 300 ns pulse width, and 9 J pulse energy was used to ablate liquids contained in various aluminum and glass vessels. Net imparted impulse and coupling coefficient were derived from the force sensor data and relevant results will be presented for various container designs and liquids used. ICCD imaging was used in conjunction with the dynamic force techniques to examine dependencies on absorption depth, irradiance, surface curvature, and container geometry. ICCD imaging was also used to determine whether surface or volume absorption should be preferable for laser propulsion using liquid propellants. Finally, ballistic experiments were conducted in order to verify the dynamic force data and lend additional evidence as to the predominant methods of force generation.


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    Title :

    Ablation of Liquids for Laser Propulsion with TEA CO2 Laser


    Contributors:

    Conference:

    BEAMED ENERGY PROPULSION: Fourth International Symposium on Beamed Energy Propulsion ; 2005 ; Nara (Japan)


    Published in:

    AIP Conference Proceedings ; 830 , 1 ; 308-318


    Publication date :

    2006-05-02


    Size :

    11 pages





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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