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Experiment on the Focusing of High power Millimeter-Wave Beam(Physics, Process, Instrument & Measurement)

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Abstract

Focusing of millimeter-wave radiation from a high power 60GHz gyrotron is studied using a Vlasov-Nakajima type quasi-optical antenna system. Fine focusing in the E-plane of the wave with an elliptic reflector gives a sheet beam of 10mm (FWHM) in thickness even at a high power input of about 100kW. Addition of a parabolic reflector brings a focused beam of about 10mm in diameter in FWHM and an energy beam wit a density higher than 100kW/cm^2 is obtained. The beam power distribution after reflection from the elliptic mirror is compared with calculated one and a good agreement is obtained.

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Details

  • CRID
    1570009752371652352
  • NII Article ID
    110006486857
  • NII Book ID
    AA00867058
  • ISSN
    03874508
  • Text Lang
    en
  • Data Source
    • CiNii Articles

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