Holographic particle sizing techniques
Holographic particle sizing techniques
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全息粒径测量技术
DOI：
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发表时间：
1974
期刊：
影响因子：
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通讯作者：
B. Thompson
中科院分区：
文献类型：
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作者：
B. Thompson
全息术提供了一种存储粒子动态三维分布信息(大小和相对位置)的方法，以便产生静态图像以供详细研究。景深比正常成像要好得多。主要技术包括形成同轴夫琅和费全息图；该全息图是在粒子的远场衍射图案和同轴背景之间形成的干涉图案。也可以使用离轴全息术。描述了这些方法的基本原理，并讨论了实际应用的局限性和优点。综述了该方法在雾化、雾化、喷雾、火箭发动机研究、两相流、气泡室摄影、电子束全息术等方面的应用。
Holography provides a method of storing the information (size and relative position) of a dynamic three-dimensional distribution of particles so that a stationary image can be produced for detailed study. The depth of field is considerably better than normal image formation. The major technique involves forming an in-line Fraunhofer hologram; this hologram is the interference pattern formed between the far field diffraction pattern of the particles and an in-line background. Off-axis holography can also be used. The basic principles of these methods are described, and practical limitations and advantages discussed. Application of the methods to fog, mist, sprays, rocket engine studies, two phase flow, bubble chamber photography, electron beam holography, etc. are reviewed.