The realization of electron vortex (EV) beams in the past decade has led to numerous proposed applications in fields from electron microscopy to control and manipulation of individual molecules. Yet despite the many unique characteristics and promising advantages of EV beams, such as transverse momentum and quantized orbital angular momentum, there remains a limited understanding of their fundamental interactions with matter at the atomic scale. Collisions between EV projectiles and atomic targets can provide some insight into these interactions and we present here fully differential cross sections (FDCS) for ionization of excited state atomic hydrogen targets using EV projectiles. We show that the projectile’s transverse momentum causes the ionized electron angular distributions to be altered compared to non-vortex projectiles and that the ionized electron’s ejection angle can be controlled by adjustment of the vortex opening angle, a feature unique to vortex projectiles. Addit...

中文翻译：

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弹丸横向动量控制电子涡旋电离碰撞中的发射

在过去的十年中，电子涡旋（EV）束的实现导致了从电子显微镜到单个分子的控制和操纵领域的众多拟议应用。然而，尽管EV光束具有许多独特的特性和有希望的优势，例如横向动量和量化的轨道角动量，但对它们与原子级物质的基本相互作用的理解仍然有限。EV弹丸与原子靶之间的碰撞可以为这些相互作用提供一些见解，在此我们介绍了使用EV弹丸使激发态原子氢靶电离的全微分截面（FDCS）。我们表明，与非涡旋弹丸相比，弹丸的横向动量会导致离子化电子角分布发生变化，并且可以通过调节涡旋弹丸的独特特征来控制离子化电子的射出角。加法...