Autonomous Long-Term In-Situ Particle Sizing Using A New Laser Diffraction Instrument
Autonomous Long-Term In-Situ Particle Sizing Using A New Laser Diffraction Instrument
复制标题
使用新型激光衍射仪进行自主长期原位粒度测定
DOI：
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复制
发表时间：
1989
期刊：
影响因子：
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通讯作者：
H.C. Pottsmith
中科院分区：
文献类型：
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作者：
Y. Agrawal;H.C. Pottsmith
A new sensor system is described for unattended long-term observation of particle size spectra in the sea. The instrument is based on the principle that, at small angles, scattering by a particle is substantially identical to diffraction through an aperture of equal diameter, regardless of the particle refractive index. A CCD array records near-forward scattering of light from a laser beam. The inversion of observed scattered intensity over a range of small angles is required to obtain size data. A survey of the inverse methods is included. The data from the CCD line array permits a new level of detail in analysis of the in-situ data. The sensor system can be easily programmed for an arbitrary schedule of sampling. Furthermore, by incorporating the concepts of a settling tube, the settling velocity spectrum of the particles can be determined independently.
