X-ray tube for medical diagnostic procedures, has shield formed in form of layer on surface arranged inside vacuum casing, where shield comprises carbon nanotubes and/or boron nitride nanotubes and/or carbon boron nitride nanotubes

摘要

The tube (1) has a vacuum casing (3) that comprises a cathode (5) and an anode (7). Electrons are emitted from the cathode to the anode when applying a high voltage to the cathode and the anode. A shield (31) is provided for backscattering electrons emitted from the anode. The shield is provided with carbon and/or boron and/or nitrogen. The shield is formed in the form of a layer on a surface arranged on the inside of the vacuum casing, where the shield comprises carbon nanotubes and/or boron nitride nanotubes and/or carbon boron nitride nanotubes.