Simulation of vortex ion generation from a cold atom ion source

IF 4.4 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2025-02-01 DOI:10.1016/j.rinp.2025.108123

Xuan Liu , Wenchang Zhou , Qi Meng , Zhen Yang , Wei Ma , Liang Lu , Pengming Zhang , Liping Zou

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引用次数: 0

Abstract

Vortex waves with orbital angular momentum (OAM) have garnered significant attention since their appearance due to their unique properties. Vortex beams are experimentally demonstrated with photons, electrons, neutrons, and atoms. However, it is still challenging to make ions with large masses produce vortex states. This study describes a scheme for generating vortex ion beams with a cold atom ion source (CAIS). In CAIS, ions are obtained by near-threshold photoionization rubidium atoms in magneto-optical trap (MOT). We investigate the propagation properties of the rubidium ion beams through simulations. In the simulation, rubidium ions extract from the CAIS and generate vortices by diffracting with holograms, where the phase of the wavefunction is changed. We analyze in detail the structure and voltage of the CAIS and propose a feasible scheme for generating vortex ions in laboratory experiments. Additionally, we propose two alternatives, one is to reduce the velocity of the ions lower, another is to use a magnetic needle to generate vortex ions. These proposals provide a new pathway for future explorations into the generation and properties of vortex ion beams.

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来源期刊

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

期刊介绍： Results in Physics is an open access journal offering authors the opportunity to publish in all fundamental and interdisciplinary areas of physics, materials science, and applied physics. Papers of a theoretical, computational, and experimental nature are all welcome. Results in Physics accepts papers that are scientifically sound, technically correct and provide valuable new knowledge to the physics community. Topics such as three-dimensional flow and magnetohydrodynamics are not within the scope of Results in Physics. Results in Physics welcomes three types of papers: 1. Full research papers 2. Microarticles: very short papers, no longer than two pages. They may consist of a single, but well-described piece of information, such as: - Data and/or a plot plus a description - Description of a new method or instrumentation - Negative results - Concept or design study 3. Letters to the Editor: Letters discussing a recent article published in Results in Physics are welcome. These are objective, constructive, or educational critiques of papers published in Results in Physics. Accepted letters will be sent to the author of the original paper for a response. Each letter and response is published together. Letters should be received within 8 weeks of the article''s publication. They should not exceed 750 words of text and 10 references.