Oscillations of bubbles containing a mixture of a detonating gas with
argon in their interior are studied. The bubbles are excited for oscil
lations by a pressure step generated in a shock tube. A bubble wall mo
tion is observed by a rotating mirror camera and a radiated pressure w
ave by a needle hydrophone. For weak pressure steps the bubble behaves
as an ordinary gas bubble. However, above a certain pressure step thr
eshold ignition of the detonating gas occurs. Due to released heat the
bubble oscillation intensity is amplified. The data obtained are used
to estimate pressures and temperatures in the compressed bubble.