| Parametric dependence of the line emissions in sonoluminescence |
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| 作者姓名： | LIANG Yue CHEN WeiZhong XU XingHua XU JunFeng |
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| 作者单位： | Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing 210093, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （Grant No. 10434070） |
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| 摘 要： | Based on a series of spectral measurements of sonoluminescence, this paper investigates parametric dependence of the line emissions in single bubble sonoluminescence (SBSL) and multi-bubble sonoluminescence (MBSL). The experiments show that the intensities of the OH* radical line, the sodium line and the noble gas lines in SBSL are relevant to the driving pressure of the acoustic field and the concentration of the noble gases dissolved in host liquids. The intensity of line emissions in total spectrum increases with the decreasing driving pressure and the increasing concentration of noble gases. Parametric dependence of line emissions in MBSL consists with that in SBSL. Line emissions in sonoluminescence should correspond to lower temperature inside the bubbles. SBSL and MBSL share the same spectral structure, and the difference between them found by previous experiments should result from the different temperatures inside bubbles.
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| 关 键 词： | 声致发光 线性光谱 参数 线性发射 |
| 收稿时间： | 2007-01-31 |
| 修稿时间： | 15 May 2007 |
Parametric dependence of the line emissions in sonoluminescence |
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| LIANG Yue CHEN WeiZhong XU XingHua XU JunFeng.Parametric dependence of the line emissions in sonoluminescence[J].Chinese Science Bulletin,2007,52(24):3313-3318. |
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| Authors: | Yue Liang WeiZhong Chen XingHua Xu JunFeng Xu |
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| Institution: | (1) Key Laboratory of Modern Acoustics and Institute of Acoustics, Nanjing University, Nanjing, 210093, China |
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| Abstract: | Based on a series of spectral measurements of sonoluminescence, this paper investigates parametric dependence of the line emissions in single bubble sonoluminescence (SBSL) and multi-bubble sonoluminescence (MBSL). The experiments show that the intensities of the OH* radical line, the sodium line and the noble gas lines in SBSL are relevant to the driving pressure of the acoustic field and the concentration of the noble gases dissolved in host liquids. The intensity of line emissions in total spectrum increases with the decreasing driving pressure and the increasing concentration of noble gases. Parametric dependence of line emissions in MBSL consists with that in SBSL. Line emissions in sonoluminescence should correspond to lower temperature inside the bubbles. SBSL and MBSL share the same spectral structure, and the difference between them found by previous experiments should result from the different temperatures inside bubbles. |
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| Keywords: | sonoluminescence line spectra parametric dependence driving pressure noble gas |
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