| 超声波扩散角的测量方法改进 |
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| 引用本文： | 孙天希,白在桥,熊俊,刘志国. 超声波扩散角的测量方法改进[J]. 物理实验, 2011, 31(6): 31-32 |
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| 作者姓名： | 孙天希 白在桥 熊俊 刘志国 |
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| 作者单位： | 1. 北京师范大学核科学与技术学院,北京,100875
2. 北京师范大学物理学系,北京,100875 |
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| 基金项目： | 国家自然科学基金，北京市自然科学基金，高等学校博士学科点专项科研基金，证据科学教育部重点实验室(中国政法大学)开放基金资助课题，北京市优秀人才培养 |
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| 摘 要： | 为了提高利用小孔反射法测量超声波扩散角的准确度,采用多点测量获得小孔反射波强度分布曲线,通过数据处理软件得到此分布曲线的半峰全宽,在此基础上校正小孔尺寸对测量结果的影响.
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| 关 键 词： | 超声波 扩散角 小孔反射 |
Improvement on method of detecting divergence of ultrasonic beam |
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| SUN Tian-xi,BAI Zai-qiao,XIONG Jun,LIUZhi-guo. Improvement on method of detecting divergence of ultrasonic beam[J]. Physics Experimentation, 2011, 31(6): 31-32 |
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| Authors: | SUN Tian-xi BAI Zai-qiao XIONG Jun LIUZhi-guo |
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| Affiliation: | SUN Tian-xia,BAI Zai-qiaob,XIONG Junb,LIU Zhi-guoa(a.College of Nuclear Science and Technology,b.Department of Physics,Beijing Normal University,Beijing 100875,China) |
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| Abstract: | To increase the accuracy of detecting the divergence of ultrasonic beam by the pinhole reflection method,the intensity distribution curve of the ultrasonic beam reflected by a pinhole was obtained by the multi-point measurement method.The effect of the size of the pinhole on the full width at half maximum of this intensity distribution curve was eliminated to improve the accuracy of the obtained divergence of the ultrasonic beam. |
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| Keywords: | ultrasonic beam scattering angle pinhole reflection |
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