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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Multiphoton Ionization of One-Electron Relativistic Diatomic Quasimolecules in Strong Laser Fields
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Multiphoton Ionization of One-Electron Relativistic Diatomic Quasimolecules in Strong Laser Fields

机译：强激光场中单电子相对论硅藻拟倍数的多选电离

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摘要

We perform a theoretical and computational study of relativistic one-electron homonuclear diatomic quasimolecules subject to strong electromagnetic fields linearly polarized along the molecular axis. Several quasimolecules with the nuclear charges 1-92 and appropriately scaled internuclear distances and field parameters are used in the calculations. The time-dependent Dirac equation is solved with the help of the generalized pseudospectral method in prolate spheroidal coordinates. We have found that employing this coordinate system makes it possible to avoid emergence of spurious states, which usually show up when solving the Dirac equation numerically. For lower carrier frequencies, interaction with the driving field is described within the dipole approximation. Relativistic effects in the multiphoton ionization probabilities are investigated with respect to the internuclear distance in the quasimolecule. For higher frequencies, the interaction with the field is described beyond the dipole approximation. Nondipole effects in the ionization probability are discussed.
机译：我们对受体沿着分子轴线线性偏振的强电磁场进行相关性均匀均匀硅硅抗体准分配的理论和计算研究。在计算中使用具有核电充电和适当缩放的核心距离和场参数的几种准分配。借助于共产球坐标中的广义伪谱法解决了时间依赖的DIAC方程。我们已经发现，采用该坐标系可以避免出现伪状态，这通常在数值上求解DIRAC方程时出现。对于较低载波频率，在偶极近似内描述与驱动场的交互。研究了多相电离概率的相对论效应是关于Quasimolecule中的核心距离的研究。对于更高的频率，将描述与偶像近似值的与该字段的交互。讨论了在电离概率中的非峰效应。

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