Attosecond electron hole dynamics in molecules

分子中的阿秒电子空穴动力学

• 批准号: 2446739
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2446739
• 关键词: Attosecond; electron; hole; dynamics; molecules

X-ray free electron lasers (FELs) are sources of intense coherent X-rays that have very recently broken the attosecond barrier and are now able to generate pulses shorter than 1 femtosecond. Within this PhD project, we will devise and simulate quantum mechanically the new ways to measure attosecond many-electron dynamics in atoms and molecules irradiated by X-ray FELs, focussing especially on the quantum evolution of electron holes. We are also predicting new ultrafast physical phenomena occurring in ionised atoms and molecules. This PhD project will involve theoretical modelling of attosecond spectroscopies of hole migration - a spectacular effect where electron hole created by an attosecond laser pulse moves across a polyatomic molecule. The work will be done in collaboration with the experimental team at Imperial (Marangos, Frasinski) and at the LCLS X-ray FEL facility at Stanford, where the highly competitive beamtime has been allocated to the hole migration experiments of our team in the beginning of 2021. During this PhD project, the student will be trained in many-body quantum mechanics, numerical methods, coding of numerical algorithms, high performance computing (parallel computing, optionally - dataflow computing).

X射线自由电子激光(FEL)是最近突破阿秒屏障的强相干X射线源，现在能够产生短于1飞秒的脉冲。在这个PHD项目中，我们将设计和模拟测量X射线自由电子激光辐照原子和分子中阿秒多电子动力学的新方法，特别是电子空穴的量子演化。我们还预测在电离原子和分子中会出现新的超快物理现象。这个PHD项目将涉及空穴迁移的阿秒光谱分析的理论模型--阿秒激光脉冲产生的电子空穴在多原子分子中移动的一种壮观效应。这项工作将与Imperial(Marangos，Frasinski)的实验团队和斯坦福大学的LCLS X射线FEL设施合作完成，在那里，竞争激烈的光束时间已分配给我们团队2021年初的空穴迁移实验。在这个博士项目中，学生将接受多体量子力学、数值方法、数值算法编码、高性能计算(并行计算，可选的数据流计算)的培训。

项目成果

Interferometry of quantum revivals.

量子复兴的干涉测量。

• DOI: 10.1063/5.0098056
• 发表时间: 2022
• 期刊: The Journal of chemical physics
• 作者: Tarrant J