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Cu靶X射线波长与基本物理常数

发表时间:2009-08-15  浏览量:1494  下载量:549
全部作者: 陆敏,卞清,殷士龙
作者单位: 河海大学电气工程学院;中国人民解放军理工大学理学院;河海大学理学院
摘 要: 在X射线衍射(X�ray diffraction, XRD)应用过程中,发现多个不同出版物上的Cu靶X射线波长数据不一致,于是对该问题进行了探讨。在里德伯公式的基础上提出一个简单可行的调整方案,依据美国国家标准与技术研究院(National Institute of Standards and Technology,NIST)网站上X�ray Transition Database提供的1998年Cu靶X射线波长数据和相关的历年基本物理常数值,对Cu靶X射线波长数值随基本物理常数的变迁而应做出的调整展开探讨。将得出的一组修正值与NIST提供的1998年的数据相比较后,发现2002年、2006年的修正值已经与1998年的数据趋于一致;这也从一个方面反映了关于基本物理常数的测定越来越准确。
关 键 词: 测试计量技术及仪器;X射线晶体学;ΔE∝R近似正比法;Cu靶X射线波长;基本物理常数
Title: The relation between X�ray wavelength values of Cu target and the fundamental physical constants
Author: LU Min, BIAN Qing, YIN Shilong
Organization: College of Electrical Engineering, Hohai University;Institute of Science, The People�s Liberation Army University of Science and Technology;College of Science, Hohai University
Abstract: During the application of the X�ray diffraction, different wavelength values of Cu target are found out from different publications so that the issue can be discussed in this paper. On the basis of the Rydberg series formula and the wavelength values of Cu target from X�ray Transition Database on the website of National Institube of standards and Technology (NIST) in 1998, a simple and practical means is introduced to adjust the X�ray wavelength values of Cu target with the fundamental physical constants change. The conclusion is that the values adjusted based on the fundamental physical constants in 2002 and 2006 have reached a same convergence with the X�ray wavelength values of Cu target in 1998 provided by NIST after a comparison, which also reflects that the measurement about the fundamental physical constants has become more and more accurate.
Key words: measuring and testing technologies and instruments; X�ray crystallography; ΔE∝R approximate proportional; X�ray wavelength values of Cu target; fundamental physical constants
发表期数: 2009年8月第15期
引用格式: 陆敏,卞清,殷士龙. Cu靶X射线波长与基本物理常数[J]. 中国科技论文在线精品论文,2009,2(15):1585-1589.
 
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