Numéro
J. Phys. IV France
Volume 04, Numéro C7, Juillet 1994
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
Page(s) C7-733 - C7-736
DOI https://doi.org/10.1051/jp4:19947172
8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique

J. Phys. IV France 04 (1994) C7-733-C7-736

DOI: 10.1051/jp4:19947172

Influence of plasma shielding in optoacoustic measurements

R. Hrovatin, J. Mozina and J. Diaci

University of Ljubljana, Faculty of Mechanical Engineering, Askerceva 6, P.O. Box 394, 61000 Ljubljana, Slovenia


Abstract
Simultaneous measurements of laser excited ultrasonic waves in a solid sample and in the surrounding air were used for characterizing the plasma shielding effect and for the evaluation of its influence in optoacoustic measurements. Typical modifications of ultrasonic waves are discussed and the acoustic energy distribution between the solid and the atmosphere is assessed by a comparative analysis of optoacoustic responses received from both probes.



© EDP Sciences 1994