RUI: Spatial and Temporal Dynamics of Matter in Intense Laser Fields
RUI:强激光场中物质的时空动力学
基本信息
- 批准号:1505147
- 负责人:
- 金额:$ 30万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2015
- 资助国家:美国
- 起止时间:2015-06-01 至 2019-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
During the last years numerous laboratories worldwide have begun to develop high-powered laser systems to create electromagnetic radiation pulses that are so energetic that new avenues to probe and control the states of matter can be tested soon. The research team at Illinois State University plans to accompany these developments with ab initio computer simulations that can provide microscopic insight into the relativistic interaction of electrons and positrons with photons with full temporal as well as spatial resolution. A better understanding of these fundamental processes might open new ways to control atomic, chemical and even biological processes on very short time scales. An important mission for the grant is also to give undergraduate students the opportunity to gain research experience. This educational experience provides them with important skills including working as a team, gaining the endurance, intellectual flexibility and experience to tackle serious research problems, and communicating results in conferences and publications. The computer simulations are obtained by solving the coupled set of Dirac-Maxwell equations of relativistic quantum electrodynamics on a numerical space-time grid. These non-perturbative large-scale calculations are very CPU time consuming but have become possible due to recent progress in the development of specialized numerical algorithms for massively parallel computers. The calculations are performed in Illinois and also at the XSEDE supercomputer cluster in Texas. A specific goal of the current grant is to simulate for the first time the laser-field induced electron-positron pair-creation process for a general situation for which the attractive Coulomb force between the two created particles is taken into account. Preliminary simulations for simplified model systems suggest that our present theoretical understanding of this process might need to be revised as this (so far neglected) inter-particle force might play a major role for the dynamics.
在过去的几年里,世界各地的许多实验室已经开始开发高功率激光系统,以产生能量如此之高的电磁辐射脉冲,以至于探测和控制物质状态的新途径很快就可以测试出来。伊利诺伊州立大学的研究小组计划在这些发展的同时进行从头算计算机模拟,这种计算机模拟可以提供微观上的洞察,了解电子和正电子与光子的相对论相互作用,具有完全的时间和空间分辨率。对这些基本过程的更好理解可能会为在很短的时间尺度上控制原子、化学甚至生物过程开辟新的途径。助学金的一项重要使命也是让本科生有机会获得研究经验。这种教育经验为他们提供了重要的技能,包括团队合作,获得耐力、智力灵活性和解决严重研究问题的经验,以及在会议和出版物中交流结果。计算机模拟是通过在数值时空网格上求解耦合的相对论量子电动力学的Dirac-Maxwell方程组得到的。这些非扰动的大规模计算非常耗费CPU时间,但由于用于大规模并行计算机的专用数值算法的最新进展,这些计算已经成为可能。计算在伊利诺伊州进行,也在德克萨斯州的XSEDE超级计算机集群上进行。本研究的一个具体目标是首次模拟激光诱导的电子-正电子对的产生过程,在一般情况下,考虑了两个产生的粒子之间的库仑力。对简化模型系统的初步模拟表明,我们目前对这一过程的理论理解可能需要修正,因为这种(迄今被忽略的)粒间力可能对动力学起主要作用。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Rainer Grobe其他文献
Rainer Grobe的其他文献
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{{ truncateString('Rainer Grobe', 18)}}的其他基金
RUI: Spatial and Temporal Dynamics of Matter in Intense Laser Fields
RUI:强激光场中物质的时空动力学
- 批准号:
2106585 - 财政年份:2021
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
RUI: Spatial and Temporal Dynamics of Matter in Intense Laser Fields
RUI:强激光场中物质的时空动力学
- 批准号:
1803226 - 财政年份:2018
- 资助金额:
$ 30万 - 项目类别:
Continuing Grant
RUI: Spatial and Temporal Dynamics of Matter in Intense Laser Fields
RUI:强激光场中物质的时空动力学
- 批准号:
1413791 - 财政年份:2014
- 资助金额:
$ 30万 - 项目类别:
Standard Grant
RUI: Spatial and Temporal Dynamics of Matter in Intense Laser Fields
RUI:强激光场中物质的时空动力学
- 批准号:
1067189 - 财政年份:2011
- 资助金额:
$ 30万 - 项目类别:
Continuing Grant
Spatial and temporal dynamics of matter in intense laser fields
强激光场中物质的时空动力学
- 批准号:
0758058 - 财政年份:2008
- 资助金额:
$ 30万 - 项目类别:
Continuing Grant
Spatial and Temporal Dynamics of Atoms in Intense Laser Fields
强激光场中原子的时空动力学
- 批准号:
0456790 - 财政年份:2005
- 资助金额:
$ 30万 - 项目类别:
Continuing Grant
RUI: Spatial and Temporal Dynamics of Atoms in Intense Laser Fields
RUI:强激光场中原子的时空动力学
- 批准号:
0139596 - 财政年份:2002
- 资助金额:
$ 30万 - 项目类别:
Continuing Grant
RUI: Spatial and Temporal Dynamics of Atoms in Intense Laser Fields
RUI:强激光场中原子的时空动力学
- 批准号:
9970490 - 财政年份:1999
- 资助金额:
$ 30万 - 项目类别:
Continuing Grant
RUI: Spatial and Temporal Dynamics of Atoms in Intense Laser Fields
RUI:强激光场中原子的时空动力学
- 批准号:
9631245 - 财政年份:1996
- 资助金额:
$ 30万 - 项目类别:
Continuing Grant
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