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On output measurements via radiation pressure

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4 Author(s)
Leeman, S. ; Dept. of Med. Eng. & Phys., King''s Coll. Sch. of Med. & Dentistry, London, UK ; Healey, A.J. ; Forsberg, F. ; Jensen, J.A.

It is shown, by simple physical argument, that measurements of intensity with a radiation pressure balance should not agree with those based on calorimetric techniques. The conclusion is ultimately a consequence of the circumstance that radiation pressure measurements relate to wave momentum, while calorimetric methods relate to wave energy. Measurements with some typical ultrasound fields are performed with a novel type of hydrophone, and these allow an estimate to be made of the magnitude of the discrepancy to be expected between the two types of output measurement in a typical case

Published in:

Ultrasonics Symposium, 1990. Proceedings., IEEE 1990

Date of Conference:

4-7 Dec 1990