CAJ | 학술논문

近年来, 研究组发展了一套利用厚衬底薄靶测量电子原子碰撞内壳层电离截面的方法. 该方法具有避免制作自支撑薄靶困难的优点. 最近, 又采取了一些措施来提高该方法测量数据的精度. 首先评述了近年来该领域的一些研究进展, 并通过测量Cr元素在小于26 keV能量范围K壳层电离截面的例子介绍了研究组的实验方法. 同时, 也对8种低Z元素和16种中﹑高Z元素在keV能区的实验数据和理论模型﹑经验公式进行了比较, 并对目前电子原子碰撞K壳层电离截面的实验测量和理论研究的现状及需进一步开展的工作进行了讨论.
근년래, 연구조발전료일투이용후츤저박파측량전자원자팽당내각층전리절면적방법. 해방법구유피면제작자지탱박파곤난적우점. 최근, 우채취료일사조시래제고해방법측량수거적정도. 수선평술료근년래해영역적일사연구진전, 병통과측량Cr원소재소우26 keV능량범위K각층전리절면적례자개소료연구조적실험방법. 동시, 야대8충저Z원소화16충중﹑고Z원소재keV능구적실험수거화이론모형﹑경험공식진행료비교, 병대목전전자원자팽당K각층전리절면적실험측량화이론연구적현상급수진일보개전적공작진행료토론.
In this paper, we give a description of recent progress on the measurements of electron-impact K-shell ionization cross-sections of atoms in the keV energy range. We present our experimental method of using thin targets with thick substrates and our measurements taken recently to improve the accuracy of the experimental data by an example of measuring K-shell ionization cross-section for Cr element within the incident energy of less than 26 keV. We also compare the K-shell experimental data sets available for 8 low-Z elements and 16 medium- and higher-Z elements in the keV energy range with some theoretical models and empirical formulae. The general comments on the status of measurement and comparison with theories for atomic K-shell ionization cross-section by electron impact are given.