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| Hauptverfasser: | , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2301.09980 |
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| _version_ | 1866917672795504640 |
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| author | Schreiber, Makoto Tokoro Cassidy, Cathal Saidani, Menour Wolf, Matthias |
| author_facet | Schreiber, Makoto Tokoro Cassidy, Cathal Saidani, Menour Wolf, Matthias |
| contents | We demonstrate theoretically and experimentally a new electromagnetic lensing concept using the magnetic vector potential - in a region free of classical electromagnetic fields - via the Aharonov-Bohm effect. This toroid-shaped lens with poloidal current flow allows for electromagnetic lensing which can be tuned to be convex or concave with a spherical aberration coefficient of opposite polarity to its focal length. This new lens combines the advantages of traditional electromagnetic and electrostatic field-based lenses and opens up new possibilities for the optical design of charged-particle systems. More generally, these results demonstrate that the Aharonov-Bohm effect can shape charged particle wavefronts beyond simple step shifts if topologies beyond simple flux lines are considered and supports the physical significance of the magnetic vector potential. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2301_09980 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Electromagnetic lensing using the Aharonov-Bohm effect Schreiber, Makoto Tokoro Cassidy, Cathal Saidani, Menour Wolf, Matthias Instrumentation and Detectors Optics Quantum Physics We demonstrate theoretically and experimentally a new electromagnetic lensing concept using the magnetic vector potential - in a region free of classical electromagnetic fields - via the Aharonov-Bohm effect. This toroid-shaped lens with poloidal current flow allows for electromagnetic lensing which can be tuned to be convex or concave with a spherical aberration coefficient of opposite polarity to its focal length. This new lens combines the advantages of traditional electromagnetic and electrostatic field-based lenses and opens up new possibilities for the optical design of charged-particle systems. More generally, these results demonstrate that the Aharonov-Bohm effect can shape charged particle wavefronts beyond simple step shifts if topologies beyond simple flux lines are considered and supports the physical significance of the magnetic vector potential. |
| title | Electromagnetic lensing using the Aharonov-Bohm effect |
| topic | Instrumentation and Detectors Optics Quantum Physics |
| url | https://arxiv.org/abs/2301.09980 |