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Description
Vortex(twisted) electrons, which carry specific orbital angular momentum(OAM), have been utilized in electron microscopy over the past two decades. In the last decade or so, due to their unique quantum properties and collision characteristics, vortex electrons have emerged as a promising direction in the field of high-energy physics. The challenge of generating, maintaining, and accelerating electron beams with specific orbital angular momentum poses a significant obstacle to applying vortex electron beams in accelerator-based systems. This article discusses the dynamical theory of vortex electron beams and recent advances in high-energy vortex electron beams, highlights in particular the conditions required for accelerating vortex electron beams and the associated beam dynamics processes.
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