8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-713-C7-715
Thermally launched photoacoustic wavesY.N. Cao, H.X. Chen, T. Sun, G.J. Diebold and M.B. Zimmt
Brown University, Department of Chemistry, Providence, RI 02912, U.S.A.
Photoacoustic waves can be generated by submicron sized particles that absorb radiation and transmit heat to a surrounding fluid. When the thermal expansion coefficient of the absorbing body is small, a photoacoustic effect is not produced until heat diffuses into the surrounding fluid. The time evolution of the acoustic wave produced by a suspension of particles can be monitored using the transient grating technique. Experiments are reported for a reverse micelle solution.
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