Patent ID: 8406378
Filing Date: 2013-03-26
Classification: H01J

Abstract:
1. A transmission x-ray tube comprising: an evacuated housing; an end window anode disposed in said housing comprised of an end window substrate and a thick target comprising a foil or a plurality of foils; a cathode disposed in said housing which emits an electron beam, which proceeds along a beam path in said housing to strike said anode in a spot, generating a beam of x-rays which exits the housing through the end window substrate; and a power supply connected to said cathode providing a selected electron beam energy and beam current to produce a bright beam of x-rays of at least one pre-selected energy characteristic of the foil or the plurality of foils of the thick target, wherein the thickness of the foil or at least one of the plurality of foils of the thick target is greater than 70 microns.