论文标题
带有较低光子能量的对齐H $ _2^+$的单光子电离
Single-photon ionization of aligned H$_2^+$ with lower photon energy
论文作者
论文摘要
我们研究了高频低强度激光场中对齐H $ _2^+$的单光子电离。我们专注于激光频率不超过目标电离电位的情况。通过时间依赖性Schrödinger方程的数值解计算出的光电子动量分布显示清晰的干扰模式。通过开发适用于高频激光场的理论模型，我们证明了干扰模式无法通过电子波与观察到的分子这两个原子中心之间观察到的动量的干扰来解释。库仑电势极大地影响了负责这种干扰的发射电子波的动量。我们的结果提出了一种探测单光子电离中分子的结构和电子动力学的方式。
We study single-photon ionization of aligned H$_2^+$ in a high-frequency low-intensity laser field. We focus on the case where the laser frequency is not far larger than the ionization potential of the target. The calculated photoelectron momentum distribution through numerical solution of time-dependent Schrödinger equation shows clear interference patterns. By developing a theory model applicable for high-frequency laser field, we show that the interference patterns can not be explained by the interference of the electronic wave with the observed momentum between these two atomic centers of the molecule. The Coulomb potential influences remarkably on the momentum of the emitting electronic wave responsible for this interference. Our results suggest a manner for probing the structure and the electron dynamics of the molecule in single-photon ionization.
