| 液体中光声信号吸收衰减的研究 |
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| 引用本文： | 任新敏,戚诒让,许龙江,张德勇,周如城.液体中光声信号吸收衰减的研究[J].中国海洋大学学报(自然科学版),1995(4). |
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| 作者姓名： | 任新敏 戚诒让 许龙江 张德勇 周如城 |
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| 摘 要： | 研究水的声吸收所引起的光声脉冲幅度的变化。脉冲声波由激光通过光击穿机制产生。文中给出了光声脉冲峰值声压与传播距离和声吸收系数之间的理论关系式。实验测量结果和理论曲线所描述的变化规律相符合。
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| 关 键 词： | 液体 脉冲光声信号 声吸收 光击穿 |
INVESTIGATION OF THE ATTENUATION OF PHOTOACOUSTIC PULSES DUE TO SOUND ABSORPTION IN LIQUIDS |
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| Ren Xinmin, Qi Yirang, Xu Longjiang, Zhang Deyong, Zhou Rucheng.INVESTIGATION OF THE ATTENUATION OF PHOTOACOUSTIC PULSES DUE TO SOUND ABSORPTION IN LIQUIDS[J].Periodical of Ocean University of China,1995(4). |
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| Authors: | Ren Xinmin Qi Yirang Xu Longjiang Zhang Deyong Zhou Rucheng |
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| Institution: | Department of ElectroniC Engineering |
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| Abstract: | The variation of the amplitude of photoacoustic pulses due to sound absorptionof water is investigated both theoretically and experimentally. Acoustic pulses aregenerated through the mechanism of laser-induced breakdown. A theoretical expression showing the relation between the peak value of the photoacoustic pulse andthe propagation distance and sound absorption coefficient is given. The experimental results are in agreement with the theoretical curve. |
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| Keywords: | Liquid photoacoustic pulse sound absorption laser-induced breakdown |
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