Electron gun
AssigneeThales Deutschland GmbH Electron Devices
InventorsChristof Dietrich, Norbert Festl, Harald Seidel
Life of this patent
Estimating the term…
Abstract
An electron gun includes: a cathode, which has a cathode holder and a cathode body; and a Wehnelt cylinder. The cathode holder receives the cathode body and the Wehnelt cylinder is suitable for bundling free electrons, which can escape from the cathode body toward the Wehnelt cylinder, to form an electron beam. The Wehnelt cylinder is interlockingly arranged, at least in some parts along a first inner surface facing the cathode holder, on an outer surface of the cathode holder and at least partly extends around the cathode holder.
Claims19
An electron gun (EK) comprising a cathode (KA) having not only a cathode holder (KH) and a cathode body (KK) but also a Wehnelt cylinder (WZ),
- wherein the cathode holder (KH) receives the cathode body (KK) and the Wehnelt cylinder (WZ) is suitable for bundling free electrons, which are able to emerge from the cathode body (KK) in the direction of the Wehnelt cylinder (WZ), as an electron beam (ES), and the Wehnelt cylinder (WZ) is disposed, at least in portions along a first inner face (WI1) turned toward the cathode holder (KH), interlockingly on an outer face (KA) of the cathode holder (KH) and at least partly surrounds the cathode holder (KH);
- wherein the cathode holder (KH) is made in hollow cylindrical manner;
- and
- wherein the inside diameter is dimensioned such that the cathode holder (KH) is configured to receive the cathode body (KK) interlockingly in the cathode holder (KH).
Dependencies are inferred from the claim text.