X-ray or gamma ray systems or devices – Source – Electron tube
Reexamination Certificate
2007-06-26
2007-06-26
Glick, Edward J. (Department: 2882)
X-ray or gamma ray systems or devices
Source
Electron tube
C378S119000, C378S121000
Reexamination Certificate
active
11087271
ABSTRACT:
An x-ray source includes an insulating tube having a cylindrical inside surface defining a cylindrical vacuum cavity, a cathode located near a first end of the insulating tube and adapted to be optically heated for emitting electrons, an anode adapted for a voltage bias with respect to the cathode for accelerating electrons emitted from the cathode, an x-ray emitter target located near a second end of the insulating tube for impact by accelerated electrons, and a secondary emission reduction layer covering at least a portion of the inside surface and adapted to minimize charge build-up on the inside surface, wherein the insulating tube is adapted to be weakly conductive to support a uniform voltage gradient along the insulating tube and across the voltage bias between the cathode and the anode.
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Summary Session III: Secondary Emission, Surface Effects and Coatings (of talks on secondary electron emission, surface effects and coatings given at the 8th ICFA Beam Dynamics Mini-Workshop on Two-Stream Instabilities in Particle Accelerators and Storage Rings, Santa Fe, NM, Feb. 16-18, 2000) prepared by Oswald Gröbner, Apr. 25, 2000 available at www.aps.anl.gov/News/Conferences/ 2000/icfa/papers/grobner-sum.pdf.
U.S. Appl. No. 60/555,570, filed Mar. 23, 2004, and entitled Miniature X-ray Source With Increased Output Stability and High Voltage Capacity.
Caruso David J.
Dinsmore Mark T.
Burns & Levinson LLP
Glick Edward J.
Gomes David W.
Lopez Orlando
twX, LLC
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