ORIGINAL INSTRUMENTATION FOR A NEW METHOD OF SURFACE INVESTIGATION

The description of the spectrometer to carry out scientific research i n surface acoustic wave resonance spectroscopy (SAWRS) is presented in the paper. Recently many experimental observations have shown a signi ficant increase in catalytic activity during surface acoustic excitati on (the reaction of CO oxidation, CVD films growth, metal thin film de position etc.). And moreover there is a report about a sensor (piezoel ectric substrate) for chemical vapor detection using a surface acousti c wave (SAW) ray that provides a selective detection of several chemic al agents. Since the phenomenon is accompanied by a specific reagent o rder, the authors propose to use the SAWRS method for measurements of SAWR-spectra of active boundaries. The results of data processing have provided some new information on the dynamic processes taking place o n the boundaries of heterophase media. The authors use a bulk force fo r damped surface modes based on original intermediate heating bath mod el. The proposed spectrometer with tunable 4 RF outputs (the twin of t wo independent frequencies) allows to form and control the standing wa ves by multipole excitation systems.