Dynamic electron correlations in one- and two-center atomic systems
一中心和二中心原子系统中的动态电子关联
基本信息
- 批准号:349581371
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2017
- 资助国家:德国
- 起止时间:2016-12-31 至 2022-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The structure and time evolution of matter on a microscopic scale crucially depend on electron correlations. Correlated electron dynamics is responsible for a wide variety of processes in nature, ranging from the origin of magnetism and the functionality of a helium-neon laser to the energy transfer in biomolecules. Some of the clearest manifestations of electron correlations appear in atomic systems where they can be studied in great depth due to modern experimental techniques. Reaction microscopes or ion storage rings, for example, allow for a detailed exploration of quantum processes at the microscopic scale of single atomic particles. The prospect of corresponding experiments on dynamic electron correlations in the near future calls for the development of sophisticated theoretical treatments. They shall help to correctly interpret the experimental data and to reveal the role of electron correlations in especially interesting situations: in particular, when atomic electrons are (i) subject to extreme high-field environments or (ii) located at two different sites which, either, are almost at rest and separated by relatively large distances, or move at high relative velocity.In this theoretical project, our goals are twofold. First, we want to study dynamic correlations between free and deeply bound electrons which are subject to the very strong electric field of a highly charged ion. The processes of resonant electron scattering and electron-impact ionization shall be explored in detail, including relativistic correlation effects, such as the Breit interaction. Corresponding experimental studies are planned at storage-ring facilities in Europe and China. We will also address the question as to which extent electronic correlations on the microscale can be influenced and even controlled by the application of a resonant laser field.Second, we want to explore dynamic processes driven by two-center electron correlations. They arise, in particular, in large diatomic molecules bound by van-der-Waals forces. While dynamic electron correlations in such two-center systems have successfully been investigated in recent years, there exists only limited knowledge about the molecular response to incident electron beams. We aim to study photon- and electron-impact ionization of asymmetric diatomic van-der-Waals molecules, where the dominant channel is expected to rely on the dynamic correlation between electrons located at the two well-separated atomic centers. Besides, we shall also study two-center electron correlation effects in mutual ionization occurring in fast collisions of light ions with hydrogen and helium atoms, including collisions assisted by a laser field.Our results may be able to form a bridge between our understanding of one-center and two-center electron correlations and guide the way towards new experiments.
微观尺度上物质的结构和时间演化主要依赖于电子关联。相关电子动力学负责自然界中的各种过程,从磁性的起源和氦氖激光器的功能到生物分子中的能量转移。电子相关性的一些最清晰的表现出现在原子系统中,由于现代实验技术,它们可以被深入研究。例如,反应显微镜或离子储存环允许在单个原子粒子的微观尺度上详细探索量子过程。动态电子关联实验的前景要求发展成熟的理论处理方法。它们将有助于正确地解释实验数据,并揭示电子关联在特别有趣的情况下的作用:特别是当原子电子(i)处于极端高场环境中或(ii)位于两个不同的位置时,这两个位置要么几乎处于静止状态,相隔相对较远的距离,要么以较高的相对速度运动。在这个理论项目中,我们的目标是双重的。首先,我们想研究自由电子和深束缚电子之间的动态相关性,这些电子受到高电荷离子的非常强的电场的影响。共振电子散射和电子碰撞电离的过程将详细探讨,包括相对论相关效应,如Breit相互作用。计划在欧洲和中国的储存环设施进行相应的实验研究。我们还将解决的问题,在何种程度上的电子相关性的微观尺度上可以影响,甚至控制的应用程序的共振激光场。第二,我们要探索由两个中心的电子关联驱动的动态过程。它们特别出现在由范德华力束缚的大的双原子分子中。虽然近年来已经成功地研究了这种双中心系统中的动态电子相关性,但关于入射电子束的分子响应的知识有限。我们的目标是研究光子和电子碰撞电离的非对称双原子范德华分子,其中的主导通道预计将依赖于位于两个分开的原子中心的电子之间的动态相关。此外,我们还将研究轻离子与氢原子和氦原子快速碰撞(包括激光场辅助的碰撞)中的双中心电子关联效应,这些结果可能在理解单中心和双中心电子关联之间架起一座桥梁,为新的实验提供指导。
项目成果
期刊论文数量(8)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Two-center electron-impact ionization via collisional excitation-autoionization
- DOI:10.1103/physreva.100.032702
- 发表时间:2019-06
- 期刊:
- 影响因子:2.9
- 作者:F. Grull;A. Voitkiv;C. Muller
- 通讯作者:F. Grull;A. Voitkiv;C. Muller
Resonant electron scattering and dielectronic recombination in two-center atomic systems
- DOI:10.1103/physreva.98.012710
- 发表时间:2018-05
- 期刊:
- 影响因子:2.9
- 作者:A. Eckey;A. Jacob;A. Voitkiv;Carsten Müller
- 通讯作者:A. Eckey;A. Jacob;A. Voitkiv;Carsten Müller
QED theory of elastic electron scattering on hydrogen-like ions involving formation and decay of autoionizing states
类氢离子弹性电子散射的 QED 理论涉及自电离态的形成和衰变
- DOI:10.1103/physrevresearch.2.013087
- 发表时间:2020
- 期刊:
- 影响因子:4.2
- 作者:K. N. Lyashchenko;D. M. Vasileva;O. Yu. Andreev;A. B. Voitkiv
- 通讯作者:A. B. Voitkiv
Electron loss from hydrogen-like highly charged ions in collisions with electrons, protons and light atoms
类氢高电荷离子与电子、质子和轻原子碰撞时失去电子
- DOI:10.1088/1361-6455/aaaa11
- 发表时间:2018
- 期刊:
- 影响因子:0
- 作者:K. N. Lyashchenko;O. Yu. Andreev;A. B. Voitkiv
- 通讯作者:A. B. Voitkiv
Dynamic two-center resonant photoionization in slow atomic collisions
慢速原子碰撞中的动态二中心共振光电离
- DOI:10.1088/1367-2630/ab4616
- 发表时间:2019
- 期刊:
- 影响因子:3.3
- 作者:A. B. Voitkiv;C. Müller;S. F. Zhang
- 通讯作者:S. F. Zhang
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Professor Dr. Carsten Müller其他文献
Professor Dr. Carsten Müller的其他文献
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{{ truncateString('Professor Dr. Carsten Müller', 18)}}的其他基金
Polarization effects in modified versions of the QED vacuum
QED 真空改良版中的偏振效应
- 批准号:
388720772 - 财政年份:2017
- 资助金额:
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Research Grants
Signatures of hidden particles in strong external fields
强外部场中隐藏粒子的特征
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双色激光场中的相对论性多光子过程
- 批准号:
173140653 - 财政年份:2010
- 资助金额:
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