Focusing type cold cathode X-ray tube
An X-ray tube and cold cathode technology, which is applied in the directions of X-ray tube electrodes, X-ray tube parts, and X-ray tube inflatable materials, etc. problem, to achieve the effect of fast response
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[0023] Embodiment: the focus type cold cathode X-ray tube of the present invention, such as figure 1 As shown, it includes a field emission cold cathode 1, a filament grid 2 composed of a closed filament, an anode 4, an X-ray tube shell 5 and a ray exit window 6; the field emission cold cathode 1 and the anode 4 are respectively arranged The two ends inside the X-ray tube casing 5 are drawn to the outside of the X-ray tube casing 5 through the cathode extraction electrode 7 and the anode extraction electrode 8 respectively; the filament grid 2 is arranged in the field Between the emission cold cathode 1 and the anode 4, its two sides are respectively drawn to the outside of the X-ray tube shell 5 through two extraction electrodes 3-1, 3-2; the shape of the filament grid 2 is The same circular or square shape as the field emission cold cathode 1, such as figure 2 and 3 As shown; the anode 4 has a slope for electron bombardment to generate X-rays, and the ray exit window 6 is...
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