论文标题
拍摄超快三弹性弹弓中的电离
Filming Enhanced Ionization in an Ultrafast Triatomic Slingshot
论文作者
论文摘要
分子中的拍摄原子运动是对分子物理和量子化学的积极追求。一种有前途的方法是激光诱导的库仑爆炸成像（CEI），其中激光脉冲迅速从分子中电离许多电子，从而导致其余离子进行库仑抑制。离子力量用于重建分子几何形状，该分子几何形状随时间（即拍摄）通过在原子间运动开始时以可调节的延迟电离来跟踪。但是，在电离脉冲期间的超快运动会使结果变形。我们在水中研究了这种效果，并拍摄了快速的“弹弓”运动，从而增强了电离并扭曲了CEI结果。我们的研究发现了增强的几何形状和机制，这可能会为许多其他多原子分子中的CEI实验提供信息。
Filming atomic motion within molecules is an active pursuit of molecular physics and quantum chemistry. A promising method is laser-induced Coulomb Explosion Imaging (CEI) where a laser pulse rapidly ionizes many electrons from a molecule, causing the remaining ions to undergo Coulomb repulsion. The ion momenta are used to reconstruct the molecular geometry which is tracked over time (i.e. filmed) by ionizing at an adjustable delay with respect to the start of interatomic motion. Results are distorted, however, by ultrafast motion during the ionizing pulse. We studied this effect in water and filmed the rapid "slingshot" motion that enhances ionization and distorts CEI results. Our investigation uncovered both the geometry and mechanism of the enhancement which may inform CEI experiments in many other polyatomic molecules.
