Generation, acceleration, focusing and collection of a high-brightness, space-charge-dominated circular charged-particle beam
US7619224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2007 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Mar 4, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/31701
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-brightness, space-charge-dominated circular charged-particle beam system includes a flat circular emitter that emits charge particles to form a space-charge-dominated circular charged-particle beam. The space-charge-dominated circular charged-particle beam is emitted from the flat circular emitter with a uniform density and having a current emission being space-charge-limited, obeying the Child-Langmuir law. A diode includes at least one electrode at the flat circular emitter and at least one additional electrode that accelerates the charged particles. A beam tunnel is coupled electrically to at least one of the additional electrodes. An applied axisymmetric magnetic field focuses the space-charge-dominated circular charged-particle beam. A depressed collector collects the space-charge-dominated circular charged-particle beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.