The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 2007
Filed:
May. 19, 2003
Applicant:
Hal Grodzins, Bedford, MA (US);
Inventor:
Hal Grodzins, Bedford, MA (US);
Assignee:
ThermoNITON Analyzers LLC, Billerica, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 35/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and device for calibrating the energy response of detectors of photons in the range from about 0.5 keV to at least 100 keV. The device makes use of the inherent property of a polarizable crystal such as a pyroelectric crystal to produce monoenergetic x-rays when the crystal is heated or cooled in a partial vacuum. Specific calibration energies of x-ray emission, may be selected for the application of the user by selection of a coating to the pyroelectric crystal and an external foil. The calibration device may be disposed within the same housing as a penetrating radiation detector.