X-ray tubes

HELECTRICITY H01Electric elements H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

H01J2235/00X-ray tubes

H01J2235/02Electrical arrangements H01J2235/023Connecting of signals or tensions to or through the vessel H01J2235/0233High tension H01J2235/0236Indirect coupling H01J2235/06Cathode assembly H01J2235/062Cold cathodes H01J2235/064Movement of cathode H01J2235/066Rotation H01J2235/068Multi-cathode assembly H01J2235/08Targets (anodes) and X-ray converters H01J2235/081Target material H01J2235/082Fluids H01J2235/083Bonding or fixing with the support or substrate H01J2235/084Target-substrate interlayers or structures H01J2235/085Target treatment H01J2235/086Target geometry H01J2235/087Transmission type H01J2235/088Laminated targets H01J2235/10Drive means for anode (target) substrate H01J2235/1006Supports or shafts for target or substrate H01J2235/1013Fixing to the target or substrate H01J2235/102Materials for the shaft H01J2235/1026Means (motors) for driving the target (anode) H01J2235/1033mounted within the vacuum vessel H01J2235/104characterised by the shape H01J2235/1046Bearings and bearing contact surfaces H01J2235/1053Retainers or races H01J2235/106Dynamic pressure bearings H01J2235/1066Treated contact surfaces H01J2235/1073Magnetic bearings H01J2235/108Lubricants H01J2235/1086liquid metals H01J2235/1093Measures for preventing vibration H01J2235/12Cooling H01J2235/1204of the anode H01J2235/1208of the bearing assembly H01J2235/1212of the cathode H01J2235/1216of the vessel H01J2235/122of the window H01J2235/1225characterised by method H01J2235/1229employing layers with high emissivity H01J2235/1233characterised by the material H01J2235/1237Oxides H01J2235/1241Bonding layer to substrate H01J2235/1245Increasing emissive surface area H01J2235/125with interdigitated fins or slots H01J2235/1254with microscopic surface features H01J2235/1258Placing objects in close proximity H01J2235/1262Circulating fluids H01J2235/1266flow being via moving conduit or shaft H01J2235/127Control of flow H01J2235/1275characterised by the fluid H01J2235/1279Liquid metals H01J2235/1283in conjunction with extended surfaces ( H01J2235/1287Heat pipes H01J2235/1291Thermal conductivity H01J2235/1295Contact between conducting bodies H01J2235/16Vessels H01J2235/161Non-stationary vessels H01J2235/162Rotation H01J2235/163shaped for a particular application H01J2235/164Small cross-section H01J2235/165Shielding arrangements H01J2235/166against electromagnetic radiation H01J2235/167against thermal (heat) energy H01J2235/168against charged particles H01J2235/18Windows H01J2235/183Multi-layer structures H01J2235/186used as target or X-ray converter H01J2235/20Arrangements for controlling gases within the X-ray tube H01J2235/205Gettering