We investigate the fundamental spatial resolution of an x-ray pore optic as a function of the pore dimensions, the photon energy, and the focal length. We achieve this by calculating the shape of the focal spot, using diffraction integrals such that the half-energy width is determined. Quantitative results are presented for the X-Ray Evolving Universe Spectroscopy (XEUS) telescope, showing that a resolution of better than 2 arc sec half-energy width is possible by use of an optic with pore sizes of approximately 0.5 mm.
© 2005 Optical Society of America
Original Manuscript: May 3, 2005
Revised Manuscript: July 11, 2005
Manuscript Accepted: July 13, 2005
Published: November 20, 2005
Arjan L. Mieremet and Marco W. Beijersbergen, "Fundamental spatial resolution of an x-ray pore optic," Appl. Opt. 44, 7098-7105 (2005)