液体表面波衍射条纹强度不对称性与频率的关系

摘要

In experiment, using the laser diffraction method, diffraction patterns are obtained from low-frequency liquid surface waves. Meanwhile, the influencing factors of the stripe intensity asymmetry is analyzed. The intensity asymmetry of diffraction patterns from liquid surface enhanced along with the increasing frequency is Fin-ded. Different diffraction patterns with the frequency 160 Hz-250 Hz by designing experiment methods are got. Finally, the relationship between the frequency and the intensity asymmetry of diffraction patterns, with the light intensity distribution cryoscope analysis system is obtained. Theory and experiment are identical with each other.%采用激光衍射法获得了低频液体表面波衍射条纹,并对衍射条纹强度不对称性的影响因素进行了分析.发现其明显程度随表面波频率的增大而非线性增加.自组实验测量系统、自行设计实验方法获得液体表面频率在160 Hz-250 Hz变化时的衍射图样,利用光强分布测定仪分析系统对所得图样进行处理得到了衍射条纹强度不对称性与表面波频率的关系,实验与理论吻合.