X-ray or gamma ray systems or devices – Source – Electron tube
Reexamination Certificate
2007-07-18
2009-06-02
Kiknadze, Irakli (Department: 2882)
X-ray or gamma ray systems or devices
Source
Electron tube
C378S136000, C378S137000
Reexamination Certificate
active
07542549
ABSTRACT:
An improved x-ray generation system produces a converging or diverging radiation pattern particularly suited for substantially cylindrical or spherical treatment devices. In an embodiment, the system comprises a closed or concave outer wall about a closed or concave inner wall. An electron emitter is situated on the inside surface of the outer wall, while a target film is situated on the outside surface of the inner wall. An extraction voltage at the emitter extracts electrons which are accelerated toward the inner wall by an acceleration voltage. Alternately, electron emission may be by thermionic means. Collisions of electrons with the target film causes x-ray emission, a substantial portion of which is directed through the inner wall into the space defined within. In an embodiment, the location of the emitter and target film are reversed, establishing a reflective rather than transmissive mode for convergent patterns and a transmissive mode for divergent patterns.
REFERENCES:
patent: 2501290 (1950-03-01), Pequignot
patent: 3267315 (1966-08-01), Hofmann
patent: 4289969 (1981-09-01), Cooperstein et al.
patent: 4592079 (1986-05-01), Sohval et al.
patent: 4757524 (1988-07-01), Laul
patent: 5014289 (1991-05-01), Rothe et al.
patent: 5077749 (1991-12-01), Noda et al.
patent: 5461656 (1995-10-01), Golovanivsky et al.
patent: 5577090 (1996-11-01), Moses
patent: 5729583 (1998-03-01), Tang et al.
patent: 5897831 (1999-04-01), Jacob et al.
patent: 6181765 (2001-01-01), Sribar et al.
patent: 6333968 (2001-12-01), Whitlock et al.
patent: 6576189 (2003-06-01), Wedekamp
patent: 7062017 (2006-06-01), Runnoe
patent: 2002/0085674 (2002-07-01), Price et al.
patent: 2005/0232396 (2005-10-01), Chidester
patent: 19829444 (2000-01-01), None
patent: 1805511 (1993-03-01), None
Busta Heinz H.
Lesiak Stanley D.
Zwicker Bruce M.
Cabot Microelectronics Corporation
Kiknadze Irakli
Omholt Thomas E.
Pippenger Phillip M.
Weseman Steven D.
LandOfFree
X-ray source with nonparallel geometry does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with X-ray source with nonparallel geometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray source with nonparallel geometry will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4144668