Mechanism of sonoluminescence from alkali-metal atoms
碱金属原子声致发光的机制
基本信息
- 批准号:21560056
- 负责人:
- 金额:$ 3万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2009
- 资助国家:日本
- 起止时间:2009 至 2011
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We have studied a mechanism of light emission from acoustic cavitation bubbles(sonoluminescence). Sonoluminescence from alkali-metal atoms, such as sodium and potassium, have been interested because its emission site is questioned, that is gas phase inside bubble or liquid phase at bubble/liquid interface. Sonoluminescence spectrum were investigated under the conditions of various temperatures, various dissolved gases and various ultrasonic frequencies. High-speed camera was used to study bubble dynamics which are closely related to the occurrence of sonoluminescence. The results of the present study strongly suggest the alkali-metal emission is originated from gas phase inside bubble. Furthermore, two components of Na emission, energy-shifted and broadened line and unshifted narrow line, were observed for the first time. This finding should be clarified in future and will provide a new development of sonoluminescence study.
我们研究了声空化气泡的光发射机制(声致发光)。钠、钾等碱金属原子的声致发光,由于其发射位置受到质疑,即气泡内的气相或气泡/液体界面的液体,一直受到人们的关注。研究了不同温度、不同溶解气体和不同超声频率下的声致发光光谱。利用高速相机研究了与声致发光发生密切相关的气泡动力学。本文的研究结果有力地表明,碱金属的排放来自气泡内的气相。此外,还首次观测到了钠发射的两个成分,即能量移位加宽线和未移位的窄线。这一发现有待进一步澄清,并将为声致发光研究提供新的发展方向。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Mechanism of sonoluminescence from K atom in aqueous solution
水溶液中K原子声致发光的机理
- DOI:
- 发表时间:2010
- 期刊:
- 影响因子:0
- 作者:Y.Hayashi;R.-K.Choi
- 通讯作者:R.-K.Choi
Direct observation of the diameter distribution of cavitating bubbles in SDS surfactant solutions
直接观察SDS表面活性剂溶液中空化气泡的直径分布
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:T. Shimozuma;H. Idei;et al.(他11名;1番目);Takaaki Yamada and Pak-Kon Choi;T.Shimozuma;Shota Deno and Pak-Kon Choi;T.Shimozuma;Yuta Takeuchi and Pak-Kon Choi;T.Shimozuma;Yuichi Hayashi and Pak-Kon Choi;S. Deno and P.-K. Choi
- 通讯作者:S. Deno and P.-K. Choi
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CHOI Pak-kon其他文献
CHOI Pak-kon的其他文献
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{{ truncateString('CHOI Pak-kon', 18)}}的其他基金
ESTIMATION OF SHEAR ELASTICITY OF BIOTISSUES USING SURFACE WAVES
使用表面波估计生物问题的剪切弹性
- 批准号:
08680939 - 财政年份:1996
- 资助金额:
$ 3万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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- 资助金额:
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