Influence of dissolved oxygen content on multibubble sonoluminescence with ambient-pressure reduction.
The efficiency of chemical reactions in the presence of ultrasound at reduced pressures has been monitored using the influence of dissolved oxygen (DO) content on a luminol solution undergoing multibubble sonoluminescence. From these measurements under the condition of constant ultrasonic frequency and constant amplitude of sound pressure, it is shown that the intensity of sonoluminescence is higher at subatmospheric ambient pressure than at atmospheric pressure under the same degree of saturation. Also, it is found that there is an appropriate content of DO to produce the highest intensity of the luminescence and its value varies with ambient pressure.
Tuziuti
Toru
T
National Institute of Advanced Industrial Science and Technology, Nagoya, Japan. tuziuti.ni@aist.go.jp
Hatanaka
Shin-ichi
S
Yasui
Kyuichi
K
Kozuka
Teruyuki
T
Mitome
Hideto
H