John Elmo Richardson
Land Surveyors in Layton, UT
License number
Utah 152431-2203
Issued Date
Nov 3, 2008
Expiration Date
Mar 31, 2017
Category
Engineer/Land Surveyor
Type
Professional Structural Engineer
Address
Address
Layton, UT
Professional information
Analytical X-Ray Tube For Close Coupled Sample Analysis
US Patent:
7593509, Sep 22, 2009
Filed:
Sep 27, 2007
Appl. No.:
11/863124
Inventors:
John Richardson - Layton UT, US
Robert Treseder - Lynchburg VA, US
Robert Treseder - Lynchburg VA, US
Assignee:
Varian Medical Systems, Inc. - Palo Alto CA
International Classification:
H01J 35/08, H01J 35/14
US Classification:
378137, 378121, 378143
Abstract:
In one example, an x-ray device is provided that includes an enclosure having an x-ray transmissive window. A cathode assembly that includes an electron source capable of emitting electrons is disposed within the enclosure. An anode is also disposed in the enclosure between the cathode assembly and the window. The anode includes a body portion and a target surface that is positioned on the body portion so as to face away from the electron source of the cathode assembly. The anode further includes a drift tunnel that defines a path through which electrons pass from the electron source to the target surface. Finally, this example includes a voltage source electrically connected so as to provide a potential field that causes some of the electrons to impact the target surface and produce x-rays for emission through the window.