光衍射法测量低频液体表面波衰减系数

祁建霞; 苗润才; 董军

光衍射法测量低频液体表面波衰减系数

1.
西安邮电学院, 应用数学与应用物理系, 西安, 710121;
2.
陕西师范大学, 物理与信息技术学院, 西安, 710062;
3.
西安邮电学院, 电子与信息工程系, 西安, 710121

作者简介: 祁建霞(1980- ),女,助教,硕士研究生,主要从事声光技术研究..

通讯作者: 苗润才, rcmiao@snnu.edu.cn ;

基金项目:
陕西省教育厅自然科学基金资助项目(05JK322);陕西省自然科学基金资助项目(2003A12);西安邮电学院中青年基金资助项目(ZL2008-31)
中图分类号: TN247

Measurement of damping constant of liquid surface wave at low frequency by light diffraction method

1.
Department of Applied Mathematics & Applied Physics, Xi'an Institute of Posts and Telecommunications, Xi'an 710121, China;
2.
Institute of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China;
3.
Department of Electronics and Information Engineering, Xi'an Institute of Posts and Telecommunications, Xi'an 710121, China

Corresponding author: MIAO Run-cai, rcmiao@snnu.edu.cn ;

CLC number: TN247

摘要: 为了对低频液体表面波的衰减系数进行测量,利用液体表面波的光衍射方法,得到了稳定、清晰的衍射图样,并发现了衍射条纹强度分布与光斑入射点位置有关。对此进行了理论分析,得到了衍射条纹强度分布与液体表面波振幅之间的解析关系式以及表面波振幅随距离变化的实验数据。结果表明,可以根据衍射条纹的强度分布来测量液体表面波的衰减系数,与经典流体力学理论相比较,符合较好。这一结果对测量液体的物理参量是有帮助的。
- 测量与计量 /
- 衰减系数 /
- 光衍射 /
- 声表面波
Abstract: In order to measure the damping constant of the liquid surface acoustic waves at low-frequency,steady and visible diffraction patterns were obtained by means of diffraction method and it was found that the variation of intensity distribution was related with the position of light spot.After analyzing the relationship between the intensity distribution of the diffraction rings and the liquid surface wave amplitude,the damping constant was obtained.The experimental data are in good agreement with classic hydrodynamics theory,which proves that the diffraction method is applicable for measurement of liquid parameters.
- measurement and metrology /
- damping constant /
- light diffraction /
- surface acoustic wave

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光衍射法测量低频液体表面波衰减系数

作者简介: 祁建霞(1980- ),女,助教,硕士研究生,主要从事声光技术研究..

通讯作者: 苗润才, rcmiao@snnu.edu.cn ;

Measurement of damping constant of liquid surface wave at low frequency by light diffraction method

Corresponding author: MIAO Run-cai, rcmiao@snnu.edu.cn ;

计量

光衍射法测量低频液体表面波衰减系数

通讯作者: 苗润才, rcmiao@snnu.edu.cn;

作者简介: 祁建霞(1980- ),女,助教,硕士研究生,主要从事声光技术研究.

English Abstract

Measurement of damping constant of liquid surface wave at low frequency by light diffraction method

Corresponding author: MIAO Run-cai, rcmiao@snnu.edu.cn

全文HTML

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光衍射法测量低频液体表面波衰减系数

作者简介: 祁建霞(1980- ),女,助教,硕士研究生,主要从事声光技术研究..

通讯作者: 苗润才, rcmiao@snnu.edu.cn ;

Measurement of damping constant of liquid surface wave at low frequency by light diffraction method

Corresponding author: MIAO Run-cai, rcmiao@snnu.edu.cn ;

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光衍射法测量低频液体表面波衰减系数

通讯作者: 苗润才, rcmiao@snnu.edu.cn;

作者简介: 祁建霞(1980- ),女,助教,硕士研究生,主要从事声光技术研究.

English Abstract

Measurement of damping constant of liquid surface wave at low frequency by light diffraction method

Corresponding author: MIAO Run-cai, rcmiao@snnu.edu.cn

全文HTML

目录