Patent · US Active

Device for generation of x-ray radiation with a cold electron source

US7388944B2 · kind B2 · utility

6Cited by

6References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Eckhard Hempel · Bad Mergentheim, DE
Detlef Mattern · Erlangen, DE
Stefan Popescu · Erlangen, DE

Key dates

Filing date	Sep 28, 2006
Grant date	Jun 17, 2008
Priority date	—
Expiry date	Sep 28, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH01J2235/168
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A device for generation of x-ray radiation has one or more cold electron sources as a cathode and at least one x-ray target as an anode that are arranged in an evacuable housing. Upon application of an electrical voltage between cathode and anode, electrons emitted from the electron source are accelerated in an electron beam onto the x-ray target. A device for reduction of the proportion of positive ions in the region of the electron source is arranged between the electron source and the x-ray target in the housing. The device exhibits a long lifespan with good focusing capability and fast modulation capability of the electron beam.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.