Observation of Stratospheric Aerosols by Nd: YAG Lidar with a New Type of Near-Infrared-Sensitive Photomultiplier Tube

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Abstract
A system of Nd: YAG lidar was equipped with a new type of near-infrared-sensitive photomultiplier tube VPM-164A, and applied to the observation of stratospheric aerosols. The photomultiplier tube proved to be very useful in field measurement. Accuracy and shortening of integration time of the observation were improved significantly as compared with those of conventional lidar observations of stratospheric aerosols. The channel ratio N0.15/N0.25 obtained by the observation is a few times larger than the values of previous measurements.

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