论文标题
Stark Shings对强场电离中低能干扰结构的影响
Effect of Stark shift on low-energy interference structure in strong-field ionization
论文作者
论文摘要
一种改进的量子轨迹蒙特卡洛方法，涉及初始状态，库仑电位和多极极化诱导的偶极电位的急剧转移，以重新审视XENON原子的光电部动量分布中的低能干扰结构的起源，这些分布受到了强烈的激光领域的影响，并伴随着这些三个效果。除了研究良好的径向手指状的干扰结构外，在光电部动量谱的低能部分中发现了从激光场发出的电子波数据包中的环状干扰结构。它归因于库仑电势和鲜明的变化的综合效应。我们的发现为具有强烈激光场的原子和分子的电子动力学成像提供了新的见解。
An improved quantum trajectory Monte Carlo method involving the Stark shift of the initial state, Coulomb potential, and multielectron polarization-induced dipole potential is used to revisit the origin of the low-energy interference structure in the photoelectron momentum distribution of the xenon atom subjected to an intense laser field, and resolve the different contributions of these three effects. In addition to the well-studied radial finger-like interference structure, a ring-like interference structure induced by interference among electron wave packets emitted from multi-cycle time windows of the laser field is found in the low energy part of the photoelectron momentum spectrum. It is attributed to the combined effect of the Coulomb potential and Stark shift. Our finding provides new insight into the imaging of electron dynamics of atoms and molecules with intense laser fields.
