Patent ID: 8126115
Filing Date: 2012-02-28
Classification: H01J,Y10T

Abstract:
1. An x-ray tube comprising: a chamber formed in part by a wall; an anode; a cathode positioned to emit electrons toward the anode; and a separator attached to an inner surface of the wall and positioned to form the chamber into a first sub-chamber and a second sub-chamber, the first sub-chamber enclosing the anode and having a first pressure therein, the second sub-chamber enclosing the cathode and having a second pressure therein, wherein the separator includes a conductance limiter passing through the separator; wherein: the separator is comprised of a refractory metal; a thickness of the conductance limiter through the separator is between 2 and 25 mm; and the conductance limiter is uniform in cross-section through an entire depth of the conductance limiter.