大学物理 ›› 2016, Vol. 35 ›› Issue (7): 37-41.

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基于微波分光计的谢乐公式验证实验

庄世豪,顾吴瑜,杜 艾,张志华,方 恺   

  1. 同济大学物理科学与52程学院,上海200092
  • 收稿日期:2015-10-12 修回日期:2015-12-27 出版日期:2016-07-20 发布日期:2016-07-20
  • 作者简介:庄世豪(1994一),男,上海人,同济大学物理科学与工程学院应用物理专业2012级本科生
  • 基金资助:
    同济大学教育改革研究与建设项目、同济大学实验教学改革项目资助

Microwave spectrometer verifying Scherrer equation

ZHUANG Shi—hao,GU Min—yu,DU Ai,ZHANG Zhi—hua,FANG Kai   

  1. School of Physics Science and Engineering,Tongji University,Shanghai 200092,China
  • Received:2015-10-12 Revised:2015-12-27 Online:2016-07-20 Published:2016-07-20

摘要: 利用微波分光计和模型来验证谢乐公式.首先对谢乐公式进行无近似修正,以满足本实验的要求;再使用微波分光计,模仿XRD测量方法,对模型进行测量,对所得结果进行分析后,发现其定性地符合谢乐公式所描述规律;随后利用数据处理软件进行数据处理,计算出所需参数的具体值,代入且定量地验证了谢乐公式的数学表达式,最后对实验中的误差进行分析,得出结论,深入对谢乐公式的理解.本文利用微波和自行构建的模型验证了谢乐公式的正确性以及其模拟x射线衍射的可行性,同时丰富了大学物理实验微波分光计项目的教学内容,提高学生构建物理模型的创造性.

关键词: 微波分光计, 谢乐公式, 晶粒尺寸, 衍射峰宽

Abstract: We conduct a microwave spectrometer experiment to verify Scherrer equation.W e derive the equation without approximation to meet the requirement of our experiment.The model, using XRD method, is tested with the microwave spectrometer and the result is analyzed,we have found that it follows the rule indicated by the equation qualitatively.W e process the data with software and the result is in agreement well with the mathematic expression formulated by Scherrer equation.W e analyze the elror at last,promoting the understanding of Scherrer equation.The experiment verifies Scherrer equation and the viability of our model,enriches teaching content of microwave spectrometer experimental project and improves students’innovation in building physical mode1.

Key words: microwave spectrometer, Scherrer equation, grain size, diffraction peak width