Analytical x-ray tube for close coupled sample analysis
US7593509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2007 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Oct 16, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/076
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In one example, an x-ray device is provided that includes an enclosure having an x-ray transmissive window. A cathode assembly that includes an electron source capable of emitting electrons is disposed within the enclosure. An anode is also disposed in the enclosure between the cathode assembly and the window. The anode includes a body portion and a target surface that is positioned on the body portion so as to face away from the electron source of the cathode assembly. The anode further includes a drift tunnel that defines a path through which electrons pass from the electron source to the target surface. Finally, this example includes a voltage source electrically connected so as to provide a potential field that causes some of the electrons to impact the target surface and produce x-rays for emission through the window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.