抄録
Sonoluminescence spectrum of the Na atoms revealed that the Na line consists of two components, one of which is broadened component which are shifted from original D lines, and the other is unshifted narrow component. We spatially separated continuum, the narrow and broad components by capturing sonoluminescence images using different optical filters. We also temporally separated these components by measuring light pulses which transmitted through the filters and detected with two photomultipliers and a fast sampling oscilloscope. The timing of light pulses and light emitting distribution were different between the broadened and narrow components and also between continuum and Na component. These results conclusively show that the continuum, the broadened component and narrow component of Na emission are originated from different bubble populations.
