期刊
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
卷 241, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jqsrt.2019.106728
关键词
Interferometric particle imaging; Irregular particle; Holography; Size; Shape measurement
资金
- National Natural Science Foundation of China [51576177, 91741129]
- Innovative Research Groups of the National Natural Science Foundation of China [51390491]
- Zhejiang Provincial Natural Science Foundation of China [LQ19E060010]
- Open Fund of Key Laboratory of Icing and Anti/De-icing [IADL20180201]
- Fundamental Research Funds for the Central Universities
The size and shape characterization of irregular particles is of great significance in the comprehensive understanding of many natural and industrial processes. The dual-beam interferometric particle imaging (DIPI) technique is adapted from a dual-beam backward illumination configuration of interferometric particle imaging to access the size and 2D shape of an irregular particle from its interferogram. An experimental setup combining the digital inline holography (DIH) and DIPI techniques characterizes the same projection of the same particle with a color camera, permitting the accuracy evaluation and validation between these two techniques. The comparison results show a good agreement between the 2D-Fourier transform of DIPI interferogram and the 2D-autocorrelation of DIH reconstructed in-focus image. The DIH gives the reference result for the size measurement of the particles, and we observe a maximum difference as low as 9% with the DIPI measurement. The backward arrangement of the dual-beam interferometric particle imaging technique facilitates its further instrumental development and application to a variety of real circumstances, e.g., solid fuel particles and ice crystals. (C) 2019 Elsevier Ltd. All rights reserved.
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