Patent ID: 7308078
Filing Date: 2007-12-11
Classification: G21K,H01J,H05H

Abstract:
1. X-ray generation apparatus comprising: an elongated target body, the target body having a length and a width and formed of respective contiguous layers extending substantially wholly across the width of the body and arranged successively in the longitudinal direction of said target body, each layer comprising a substance that, on being irradiated by a beam of electrons of suitable energy directed onto the target body from laterally of the elongated target body, generates a source of x-ray radiation from a volume of interaction of the electron beam with the respective layer; and a mount from which the body projects to a tip remote from the mount, said mount providing a heat sink for said target body; and wherein the characteristic energies of the x-ray radiation generated by the respective contiguous layers differ for a given incident electron energy.