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Electron gun from an oscilloscope CRT Setup of an electron gun. 1. Hot cathode.2. Wehnelt cylinder.3. Anode. A direct current, electrostatic thermionic electron gun is formed from several parts: a hot cathode, which is heated to create a stream of electrons via thermionic emission; electrodes generating an electric field to focus the electron beam (such as a Wehnelt cylinder); and one or more ...
South Africa: Semi-automatic pistol: 9×19mm Parabellum: 15-round magazine. License-built Beretta 92F. Standard issue side arm since 1989 alongside the SP1. Vektor SP1 South Africa: Semi-automatic pistol: 9×19mm Parabellum: 15-round magazine. Standard issue side arm alongside the Z88 since 1992. Submachine guns Milkor BXP [8] South Africa ...
The basic components of a typical electron-beam processing device include: [1] an electron gun (consisting of a cathode, grid, and anode), used to generate and accelerate the primary beam; and, a magnetic optical (focusing and deflection) system, used for controlling the way in which the electron beam impinges on the material being processed ...
The electron gun contains a heater, which heats a cathode, which generates electrons that, using grids, are focused and ultimately accelerated into the screen of the CRT. The acceleration occurs in conjunction with the inner aluminum or aquadag coating of the CRT. The electron gun is positioned so that it aims at the center of the screen. [190]
Entered service in 2024. The largest UAV designed in South Africa and in Africa, it has an endurance of up to 35 hours of flight time and a payload capacity of 210 kg. [99] Production for the Milkor 380 is currently set at 8 drones per year, in 2026 this is set to be doubled by up to 16 drones produced a year. [100] [101]
Schottky-emitter electron source of an Electron microscope. A field emission gun (FEG) is a type of electron gun in which a sharply pointed Müller-type [clarification needed] emitter [1]: 87–128 is held at several kilovolts negative potential relative to a nearby electrode, so that there is sufficient potential gradient at the emitter surface to cause field electron emission.
The South African defence industry is the most advanced in Africa and one of the most advanced and largest in the world with over 20 defence companies. [1] The defence industry provides weapons and equipment to the South African National Defence Force (SANDF) and for export customers. The South African defence industry develops weapons and ...
Electron beam computed tomography (EBCT) is a fifth generation computed tomography (CT) scanner in which the X-ray tube is not mechanically spun in order to rotate the source of X-ray photons. This different design was explicitly developed to better image heart structures that never stop moving, performing a complete cycle of movement with each ...