Difference between Nominal and Measured Active Element Sizes of Hydrophones
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概要
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The problem of the difference between the nominal and measured active element sizes of hydrophones in sensitivity calibration using focused ultrasound is described in this paper. The calibration is significantly influenced by the spatial averaging of ultrasound pressure on an element. The influence can be estimated quantitatively using the size of an element. It has been reported that both nominal and measured effective element sizes could be used for such estimation. However, from the result of the comparison of the nominal and measured element sizes of some hydrophones, there was a hydrophone that could be estimated only using the latter element size, because of the large difference between nominal and measured ones.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2008-05-25
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