What effect does vaporized tungsten have on the glass envelope?

What effect does vaporized tungsten have on the glass envelope?

• A. Loss of anode rotation
• B. Improved cooling
• C. Reduced exposure
• D. No effect

Answer: (A)

Vaporized tungsten that deposits on the inside of the glass envelope contaminates the inner workings of the rotating anode assembly. This buildup can interfere with the bearings and the vacuum-sealed environment that the induction motor relies on, increasing friction or causing a mechanical seize of the rotor. When the rotor can’t spin, the anode rotation is lost, which disrupts heat distribution and can rapidly shorten tube life. This contaminant would not improve cooling or reduce exposure, and it certainly has an adverse effect rather than none.

Vaporized tungsten that deposits on the inside of the glass envelope contaminates the inner workings of the rotating anode assembly. This buildup can interfere with the bearings and the vacuum-sealed environment that the induction motor relies on, increasing friction or causing a mechanical seize of the rotor. When the rotor can’t spin, the anode rotation is lost, which disrupts heat distribution and can rapidly shorten tube life. This contaminant would not improve cooling or reduce exposure, and it certainly has an adverse effect rather than none.