8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-761-C7-764
Determination of the nonlinearity parameter of the liquid using spherical finite-amplitude photoacoustic pulseY. Qi1, L. Xu1, D. Zhang1, R. Zhou1, X. Zhang2, C. Gan2 and J. Lin2
1 Ocean University of Qingdao, Qingdao 266003, China
2 The Laboratory of Modern Acoustics, Nanjing University, Nanjing 210008, China
A method for measurement of the nonlinearity parameter B / A of liquids by means of a spherical finite-amplitude photoacoustic pulse is described. The photoacoustic pulse is generated by the laser-induced breakdown mechanism. The relation between B / A and the decrement of rise time of wavefront of the acoustic pulse during its propagation is given. The nonlinearity parameter of water is obtained by the present method.
© EDP Sciences 1994