Spin–orbit Larmor clock for ionization times in one-photon and strong-field regimes

Spin–orbit Larmor clock for ionization times in one-photon and strong-field regimes
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自旋轨道拉莫尔时钟,用于测量单光子和强场状态下的电离时间

DOI:
10.1088/0953-4075/48/23/234002
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发表时间:
2015
期刊:
Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子:
--
通讯作者:
Olga Smirnova
Olga Smirnova
中科院分区:
--
文献类型:
--
作者:
Jivesh Kaushal;Felipe Morales;Lisa Torlina;Misha Ivanov;Olga Smirnova

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光电离是一种吸收一个或几个光子释放一个电子并在量子系统(如原子或分子)中产生空穴的过程。用一个或多个光子移除一个电子是否更快,以及如何定义这个时间?在这里,我们引入一个时钟,它允许我们定义单光子和多光子电离机制的电离时间。这种时钟利用电子或空穴自旋与轨道运动产生的磁场相互作用,称为自旋-轨道相互作用。自旋进动角在磁场中记录了时间。我们使用分析理论和从头计算的结合来显示电离延迟如何依赖于吸收光子的数量,它在实验中是如何出现的,以及它意味着什么电子动力学。特别地,我们应用我们的方法计算了在强场电离隧穿状态下导出的时间延迟。
Photoionization is a process where absorption of one or several photons liberates an electron and creates a hole in a quantum system, such as an atom or a molecule. Is it faster to remove an electron using one or many photons, and how to define this time? Here we introduce a clock that allows us to define ionization time for both one-photon and many-photon ionization regimes. The clock uses the interaction of the electron or hole spin with the magnetic field created by their orbital motion, known as the spin–orbit interaction. The angle of spin precession in the magnetic field records time. We use the combination of analytical theory and ab initio calculations to show how ionization delay depends on the number of absorbed photons, how it appears in the experiment and what electron dynamics it signifies. In particular, we apply our method to calculate the derived time delays in tunneling regime of strong-field ionization.
DOI: --
发表时间: 2010
期刊: Journal of Physics B
影响因子: --
作者:
Z. B. Walters;O. Smirnova
通讯作者: Z. B. Walters;O. Smirnova
DOI: 10.1038/nature06229
发表时间: 2007-10-25
期刊: NATURE
影响因子: 64.8
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发表时间: 2007-04-05
期刊: NATURE
影响因子: 64.8
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影响因子: 3.4
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发表时间: 2010-08-05
期刊: NATURE
影响因子: 64.8
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