Device for the generation of electron beams
US5623148A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1995 |
| Grant date | Apr 22, 1997 |
| Priority date | — |
| Expiry date | Dec 11, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J37/075
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention which relates to a device for the generating of electron beams with a vacuum chamber, in which a massive cathode (10) is arranged with a wire cathode (14) arranged above and a aperture anode (17) below the massive cathode (10) and whom below the aperture anode (17) focusing and/or deflecting magnet arrangements are provided which direct an electron beam (23) emitted by the massive cathode (10) and accelerated by the aperture anode (17) to a processing location (22), has the basic task to make the power of such devices variable over a large range using simple mechanical means. According to the invention the task is solved by arranging the aperture anode (17) rigidly and the massive cathode (10) and the wire cathode (14) axially movable within the vacuum chamber (1). For the movements of the massive cathode (10) and the wire cathode (14) contact means are provided which follow their movements and lead to the outside of the vacuum chamber (1). In addition for the axial movement of the massive cathode (10) a motion means is provided connected with the cathode (Figure).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.