Electron guns for processing applications typically use a thermionic cathode as the source of electrons, where the cathode is a resistively heated refractory metal ribbon. In order to keep the heat input to the gun reasonably ...
Electron guns for processing applications typically use a thermionic cathode as the source of electrons, where the cathode is a resistively heated refractory metal ribbon. In order to keep the heat input to the gun reasonably ...
High power electron beam welding can be applied to structures such as pressure vessels with wall thicknesses of up to 200 mm. Such applications often make use of steels that exhibit ferromagnetic properties. If the work pieces ...
This paper describes the development of a quality assurance tool for production electron beam welding. The BeamAssure probe system has been installed on a number of production and development electron beam machines. The hardware ...
A plasma cathode electron beam (EB) gun is presented in this work. A radio frequency (RF) excited plasma at 84 MHz was used as the electron source to produce a beam power of up to 3.2 kW at -60 kV accelerating voltage. The ...
The paper is devoted to electron beam guns based on the emission of electrons from plasma of a hollow-cathode reflective discharge. The measuring of the diameter and brightness of beam with the rotating wire sensor and scanning ...
Electron beam surface treatment and 3D printing impose stringent beam deflection requirements. The deflection must be of high frequency (some 50 kHz), high amplitude (10 s of μm) and accurate (to within 10 microns). Methods ...
This paper describes a laser heated cathode gun design which uses a lanthanum hexaboride button in a diode configuration. Beam currents up to 40 mA at – 60 kV were generated by using laser powers in the range of 19 to 83 ...
The quality of electron beam welds depends upon a number of parameters like accelerating voltage, beam current, focus settings, vacuum level, working distance and welding speed. Even if these parameters are tightly controlled, ...
Electron beams are used in many different industrial, medical and scientific applications. Each area has many specific requirements that can only be met with bespoke gun designs producing beams with the required intensity, ...
2012-2023