Flat electron beams
| Autor: | Igor Gorodezky, Albert V. Crewe |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Physics
Angular momentum Field (physics) business.industry Scanning electron microscope Electron Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Computational physics Lens (optics) Smith–Purcell effect chemistry.chemical_compound Optics chemistry law Quadrupole Physics::Accelerator Physics Focal length Electrical and Electronic Engineering business Computer Science::Databases |
| Zdroj: | Optik. 117:15-20 |
| ISSN: | 0030-4026 |
| DOI: | 10.1016/j.ijleo.2005.05.005 |
| Popis: | Electrons from a source in a solenoidal magnetic field emerge from that field with a characteristic angular momentum. This behavior can be used to produce a flat ribbon-like electron beam with zero thickness (to first order). We show that this can be done using a quadrupole triplet and provide analytical expressions for the focal length of each lens. Solutions can be found over a wide range of practical values of the parameters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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