| 光激励液体辐射光声波的特性研究 |
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| 引用本文： | 耿森林.光激励液体辐射光声波的特性研究[J].渭南师范学院学报,2014(11):16-20. |
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| 作者姓名： | 耿森林 |
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| 作者单位： | 渭南师范学院物理与电气工程学院,陕西渭南714099 |
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| 基金项目： | 陕西省自然科学基金项目：储粮害虫活动声检测及其声频特征研究（2012JM1005） |
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| 摘 要： | 研究了一维情况下，光激励液体辐射光声波的特性．通过解声压波动方程，得到光激励流体辐射产生的光声波的时间函数，研究了空间热函数与时间6函数乘积所描绘的热沉积产生的超声波情况．结果表明：热的空间沉积形式直接描绘光声波的时间图像，对于脉冲宽度比声波通过声源的时间长的激光来说，光声波形也是与激光脉冲时间图形相称的，同时，也导出了具有任意空间函数辐射源的多级辐射表达式．
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| 关 键 词： | 光激励 液体 光声波 |
Properties of Photoacoustic Wave Generated by Irradiation of Liquid with Optical Radiation |
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| GENG Sen-lin.Properties of Photoacoustic Wave Generated by Irradiation of Liquid with Optical Radiation[J].Journal of Weinan Teachers College,2014(11):16-20. |
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| Authors: | GENG Sen-lin |
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| Institution: | GENG Sen-lin ( School of Physics and Electrical Engineering, Weinan Normal University, Weinan 714099, China) |
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| Abstract: | The time dependence of the photoacoustic wave generated by irradiation of liquid with optical radiation can be found by solution of the wave equation for pressure in one dimension, also with the generation of ultrasonic wave where heat deposition is described by a spatial heating function times a delta function in time. The solution shows that the spatial deposition of heat is directly mapped in to the time profile of the photoacoustic wave. For laser pulses long compared with the transit time of sound across the irradiated body, the photoacoustic waveform is directly proportional to the intensity of the exciting radiation pulse, also the muhipole radiation in one dimension is presented. |
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| Keywords: | optical radiation liquid photoacoustic wave |
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