16. 音響化学発光におけるバースト波の効果

概要

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We have studied sono-chemical luminescence of a luminol solution by pulse burst waves of 1MHz ultrasound. The induced luminescence was measured by a photomultiplier. The consisted of 7.1×10^<-4>mol/l of luminol and 1.0×10^<-1>mol/l of sodium carbonate. Pulse burst waves were composed of the pulse on time(T_<on>) and pulse off time(T_<off>). T_<on> from 1000μsec to 8000μsec and T_<off> from 400μsec to 1600μsec were studied. Time dependence of the luminescence under these pulse burst waves was observed. Within a T_<on> period, the luminescence intensity started from zero and reached the steady state value. But at the start of the next T_<on> period, the intensity started from zero again, indicating that a favorable condition for the cavitations was lost during the T_<off> period.
日本ソノケミストリー学会の論文