Some aspects of photo and particle acoustics methods

Several work proceeded at the Fraunhofer Institute IZFP/EADQ Dresden on photo and practicle acoustic methods is reviewed. It includes both modelling activities and experimental work. The range of applied excitations covers photons, electrons and high energy (hundreds of MeV/amu) ions. Both time resolves measurements by pulse excitation as well as monofrequent measurements by periodic excitation together with signal recovery (lock-in technique) are conducted.