Comparison between the single-bubble sonoluminescences in sulfuric acid and in water |
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Authors: | Wei Huang WeiZhong Chen XianXian Gao and Yue Liang |
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Institution: | (1) Key Laboratory of Modern Acoustics, MOE, and Institute of Acoustics, Nanjing University, Nanjing, 210093, China |
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Abstract: | Single-bubble sonoluminescence (SBSL) is achieved with strong stability in sulfuric acid solutions. Bubble dynamics and the
SBSL spectroscopy in the sulfuric acid solutions with different concentrations are studied with phase-locked integral stroboscopic
photography method and a spectrograph, respectively. The experimental results are compared with those in water. The SBSL in
sulfuric acid is brighter than that in water. One of the most important reasons for that is the larger viscosity of sulfuric
acid, which results in the larger ambient radius and thus the more contents of luminous material inside the bubble. However,
sonoluminescence bubble’s collapse in sulfuric acid is less violent than that in water, and the corresponding blackbody radiation
temperature of the SBSL in sulfuric acid is lower than that in water.
Supported by the National Natural Science Foundation of China (Grant Nos. 10434070 and 10704037) and the Ministry of Education
Priorities Project of China (Grant No. 103078) |
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Keywords: | single bubble sonoluminescence sulfuric acid ambient radius spectrum |
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