Original instrumentation for a new method of surface investigation

The description of the spectrometer to carry out scientific research in surface acoustic wave resonance spectroscopy (SAWRS) is presented in the paper. Recently many experimental observations have shown a significant increase in catalytic activity during surface acoustic excitation (the reaction of CO oxidation, CVD films growth, metal thin film deposition etc.). And moreover there is a report about a sensor (piezoelectric substrate) for chemical vapor detection using a surface acoustic wave (SAW) ray that provides a selective detection of several chemical agents. Since the phenomenon is accompanied by a specific reagent order, 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 on the boundaries of heterophase media. The authors use a bulk force for damped surface modes based on original intermediate heating bath model. The proposed spectrometer with tunable 4 RF outputs (the twin of two independent frequencies) allows to form and control the standing waves by multipole excitation systems.