11. ルミノールの音響化学発光における溶存空気濃度の影響
スポンサーリンク
概要
- 論文の詳細を見る
The content of gases dissolved in liquids affects sonochemistry, since it affects the cavitation dynamics. The conventional sonochemistry is usually made to take place in saturated liquids because saturation facilitates the onset of cavitation and removes the ambiguity in one of the controllable parameters, the relative gas content. However, recent advances in single bubble sonoluminescence (SBSL) research have made it clear that the gas content influences the luminescence in stability and brightness. If there exists some kind of relationship between SBSL and the conventional sonoluminescence, or the so-called multibubble sonoluminescence (MBSL), then it is likely that effects of gas content can be observed also for the latter luminescence, which is akin to sonochemistry in many ways. We thus changed the content of dissolved air and monitored the MBSL intensity using the photon counting technique. A sonicator, that is, a horned PZT transducer, was used as a power source. In one of the experiments, a sample chamber was evacuated continuously by a vacuum pump as slowly as possible so that nonequilibrium existed between the air content and the ambient pressure within the otherwise stationary environment. Henry's law did not seem to hold during the experiment. Once the pumping started, the luminescence intensity increased until a certain pressure from which the intensity began to decrease. In another experiment, an air reservoir was connected to the chamber and the continuous pumping was avoided so that equilibrium could be established between the air content and the ambient pressure. In contrast to the previous experiment, the intensity changed little, although a slight maximum was observed about at 300 torr. The two dissimilar results are difficult to explain, and there may have been systematic errors involved in the experiments. In order to have definite results under these different conditions we have designed a better experimental setup in which the power delivered by the transducer can be kept constant during the pressure change and a fixed portion of light can always be collected.
- 日本ソノケミストリー学会の論文
著者
関連論文
- 28a-PS-49 Barrier Crossing Processes in an Arbitrary Potential
- PA12 Q-スイッチYAGレーザーを用いた光解離と生成物の光音響検出 : ヨードベンゼンのベンゼン溶液(ポスターセッション2-概要講演・展示)
- PA-44 共振・反共振の自動追尾における外部変調信号の効果III. : 雑音を含む正弦波(P.ポスターセッションA-概要講演・展示)
- PA10 共振・反共振の自動追尾における外部変調信号の効果II(ポスタセッションA-概要講演・展示)
- 29p-E-11 単一振動数の外場中の粒子がポテンシャル障壁内で示す非線形現象
- PB32 共振・反共振の自動追尾における外部変調信号の効果(ポスターセッションB)
- PD3 清水・斎藤の自動追尾方式についての一考察(ポスターセッション概要講演)
- 27a-M-10 スクロース単結晶の圧電性 I
- 2PC-5 圧電共振子の共振および反共振の高速トラッキング : 自己追随型フェーズロックループの設計方式と特性(圧電応用デバイス・振動子,ポスターセッション(概要講演))
- 単一気泡ソノルミネッセンスへの溶存気体の影響
- PB-31 音響化学反応速度の圧力依存性 : 酸素による促進効果(P.ポスターセッションB-概要講演・展示)
- 5. トランスジューサーのミスマッチとソノルミネッセンス
- 11. ルミノールの音響化学発光における溶存空気濃度の影響
- 14. 単泡性ソノルミネッセンスの化学的反応をめざして