• DocumentCode
    152568
  • Title

    Penetrating rock with intense millimeter-waves

  • Author

    Woskov, P.P. ; Einstein, Herbert H. ; Oglesby, Kenneth D.

  • Author_Institution
    Massachutess Inst. of Technol., Cambridge, MA, USA
  • fYear
    2014
  • fDate
    14-19 Sept. 2014
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    The use of directed energy millimeter-waves to bore into hard rock is being investigated in the laboratory as an advanced drilling technology. Experiments at 28 GHz show that with peak intensities of 1-2 kW/cm2 granite, basalt, and limestone can be melted and vaporized to over 3000 °C in a few minutes. Heating is limited by radiative heat transfer loss. Key features for practical field implementation of a gyrotron drilling system have been shown on a small scale in the laboratory.
  • Keywords
    drilling; gyrotrons; heat transfer; microwave heating; millimetre wave tubes; radiative transfer; rocks; advanced drilling technology; basalt; directed energy millimeter-waves; frequency 28 GHz; granite; gyrotron drilling system; hard rock; heating; intense millimeter-waves; limestone; penetrating rock; radiative heat transfer loss; Gyrotrons; Heating; Laboratories; Plasma temperature; Rocks; Surface waves; Temperature measurement;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
  • Conference_Location
    Tucson, AZ
  • Type

    conf

  • DOI
    10.1109/IRMMW-THz.2014.6955993
  • Filename
    6955993
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=152568