RUI: Relaxation and Polarization Effects in the Photoionization of Atoms

RUI：原子光电离中的弛豫和偏振效应

• 批准号: 0099526
• 负责人: Mickey Kutzner
• 金额: $ 7.5万
• 依托单位: Andrews University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-07-01 至 2004-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0099526&HistoricalAwards=false
• 关键词: RUI; Relaxation; Polarization; Effects; Photoionization

When ultraviolet light or soft x-ray radiation is used to illuminate a gas, it is possible for light particles (photons) to be absorbed by atoms, resulting in the emission of electrons (photoelectrons). This process is termed photoionization. It can be used to probe the electron structure of atoms and the interactions among the various atomic electrons. Here the theory of these interactions will be investigated, especially for electrons lying deep within the atom. One problem to be studied is core relaxation, the rearrangement of the remaining electrons in the atom after the departure of the photoelectron. Another problem is core polarization, the change in the arrangement of the remaining electrons in the presence of the departing photoelectron.

当使用紫外光或软X射线辐射照射气体时，光粒子(光子)可能被原子吸收，从而产生电子(光电子)的发射。这个过程被称为光电离。它可以用来探测原子的电子结构和各种原子电子之间的相互作用。这里将研究这些相互作用的理论，特别是位于原子深处的电子。一个要研究的问题是核心弛豫，即光电子离开后原子中剩余电子的重新排列。另一个问题是核心极化，即在离开的光电子存在的情况下剩余电子排列的变化。