CPC H01J 35/16 (2013.01) [H01J 35/066 (2019.05); H01J 35/147 (2019.05); H01J 2235/083 (2013.01); H01J 2235/168 (2013.01)] | 24 Claims |
1. A component part in a vacuum area of an X-ray tube with an opening through which an electron beam is guided, the component part including a beam tube, the component part comprising:
a base body made of a first material, wherein the first material is a metal and the beam tube is made from the first material,
at least one of a core of a coil which forms at least a portion of the opening; and
wherein arranged on a surface forming the opening which includes the beam tube, said surface being selectively exposed to the electron beam, is a second material having an atomic number which is smaller than an atomic number of the first material.
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