Patent · US Expired

Electron generating assembly for an x-ray tube having a cathode and having an electrode system for accelerating the electrons emanating from the cathode

US5576549A · kind A · utility

111Cited by

0References

17Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Erich Hell · Erlangen, DE
Manfred Fuchs · Nuremberg, DE

Key dates

Filing date	Jun 28, 1995
Grant date	Nov 19, 1996
Priority date	—
Expiry date	Jun 28, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH01J2201/342
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electron generating assembly for an x-ray tube has a thermionic cathode and an electrode system for accelerating electrons emitted by the thermionic cathode, and an electron multiplier disposed in the electron path. In order to achieve a given electron beam density, the electron beam current emitted by the cathode can be reduced dependent on the multiplication factor of the electron multiplier, thereby extending the service life of the overall assembly. The electron multiplier can be controllable.

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