An interferometric technique for B/A measurement.
An isentropic phase method is described for measuring in vitro the acoustic nonlinearity parameter B/A of several aqueous buffers, protein solutions, lipid oils, and emulsions. The technique relies upon the use of an acoustic interferometer to measure the small changes in sound speed that accompany a rapid hydrostatic pressure change of between one and two atmospheres. Average accuracies of 0.85% are attainable with this method.
Everbach
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EC
Yale Center for Acoustics, Yale University, New Haven, Connecticut 06520, USA.
Apfel
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RE
D000162:Acoustics; D004655:Emulsions; D066298:In Vitro Techniques; D008055:Lipids; D011506:Proteins; D012996:Solutions; D013997:Time Factors; D014867:Water
D004655:Emulsions; D008055:Lipids; D011506:Proteins; D012996:Solutions; D014867:Water