B114 紫外レーザーを用いたインラインホログラフィ法による微粒子計測

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  • Particle Sizing with Inline Laser Holography using an Ultraviolet Laser
  • シガイ レーザー オ モチイタ インライン ホログラフィホウ ニヨル ビリュウ

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The breakup process of a liquid drop plays an important role in the various engineering problems such as the gas atomization for the production of fine metal power, the ink jet printer and the fuel injector of the Diesel engine. The detailed mechanism of the breakup of liquid drops, however, is not well understood. In the present research, the diagnostic system based on the inline laser holography is constructed to clarify this process. This method determines the size and location of a small particle by comparing the hologram pattern obtained by the experiments with that by the theory. The method is proposed that uses the ultraviolet laser as a light source of the holography system. The distance between the target particles and the hologram plane can be made longer by using the light with a shorter wavelength. This will give a particular advantage to the practical applications in avoiding the holographic film or the lens system being wet by the droplets.

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