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Beam-plume interaction in laser materials processing

  • MATSUNAWA A.
    Welding Research Institute, Osaka University
  • OHNAWA Toshio
    Graduate School, Osaka University (Present office)Mitsubishi Electric Co.

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Abstract

The paper describes the energy dissipation mechanism during beam-plume/plasma interaction. From spectroscopic and other optical measurements of Ti-plume induced by pulsed YAG laser shot, it has been concluded that major energy dissipation processes in plume are ; 1) Absorption of photons in a plume/plasma by Inverse Bremsstrahlung, and 2) Rayleigh scattering of incident beam by ultra fine particles formed in the plume. Both processes have strong dependence on wavelength of radiation and the paper gives the generalized idea of energy loss of laser beam in laser induced plume/plasma.

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Details

  • CRID
    1574231877022639872
  • NII Article ID
    110006486928
  • NII Book ID
    AA00867058
  • ISSN
    03874508
  • Text Lang
    en
  • Data Source
    • CiNii Articles

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