An x-ray source assembly and method of operation are provided having enhanced output stability. The assembly includes an anode having a source spot upon which electrons impinge and a control system for controlling position of the anode source spot relative to an output structure. The control system can maintain the anode source spot location relative to the output structure notwithstanding a change in one or more operating conditions of the x-ray source assembly. One aspect of the disclosed invention is most amenable to the analysis of sulfur in petroleum-based fuels.
STATEMENT AS TO RIGHTS UNDER FEDERALLY SPONSORED RESEARCHED
This invention was made with Government support under Prime Contract DE-FG02-96ER82918 awarded by the Department of Energy. The United States Government has certain rights to this invention.