For the first time, atomic single-bubble sonoluminescence of Yb in a colloidal suspension in dodecane of SiO2 nanoparticles containing YbCl3 was recorded. A spectrum was obtained containing Yb, Yb+ lines in the region of 300-550 nm, together with SiO lines, due to the entry of nanoparticles into the bubble during sonolysis of the suspension. The lower limit of determination of ytterbium in the initial aqueous solution of YbCl3 used for depositing onto nanoparticles, according to the intensity of the analytical line at 399 nm in this spectrum, is 3∙10–3 mol/l. By comparing the experimental and temperature-dependent calculated spectra of ytterbium, we found the electron temperature in the nonequilibrium plasma that arises during bubble collapse, where Yb atoms emit light: Te = 7000±500 K.

The preparation and sonoluminescence of Cr(CO)_6 nanodispersed suspensions in water, 83% H_2SO_4, and 74% H_3PO_4 are described for the first time. In the spectra of single- and multibubble sonoluminescence of these suspensions, chromium atom lines are found that are analogous to the corresponding lines in the sonoluminescence spectra of true Cr(CO)_6 solutions in dodecane. Sonoluminescence of nanodispersed suspensions of metal carbonyl, by which the electronic temperature reached in the bubbles under sonolysis (from 6500 to 16 000 K in water and acids) was measured, expands the scope of the sonochemical model of injection of nanodroplets of low volatile compounds into cavitation bubbles due to the inclusion of injection of suspensions of insoluble substances into it.

Photographs and spectra of a single-bubble sonoluminescence of a moving bubble in pure water and Ru(bpy)32+ aqueous solutions were obtained. For solutions of the ruthenium complex, the presence of luminescence zones located outside the line of the main trajectory of the glowing bubble characteristic of pure water is shown. The observed spatial localization of these zones confirms the conditionality of their appearance, as was previously shown by the authors, by sonochemiluminescence of the ruthenium complex in the volume of the solution, secondary to the primary sonoluminescence of the bubble itself.