Electrolysis-assisted single-bubble sonoluminescence in chlorine-doped water

Seeding bubbles for sonoluminescing single bubbles were created by direct-current electrolysis in 0.1 mol/l-aqueous solutions of potassium chloride for chlorine and potassium nitride for hydrogen. Compared with bubbles in air- and hydrogen-doped water, a bubble in chlorine-doped water evaded trapping in the acoustic field, but it could give luminescence intermittently only for 5–15 s. The luminescence of the bubble in chlorine-doped water was barely discernible to the naked eye, whereas that in hydrogen-doped water was a little brighter than that in air-doped water.