Design of a Conical Diffraction Type Plane Holographic Grating Monochromator for Use in the Energy Region of 1–4 keV

The holographic plane grating with grooves of a radial form and its imaging properties in a converging beam are analyzed. The results are applied to the design of conical diffraction monochromators for the 1–4 keV region, and their expected performances are examined by means of ray tracing in comparison with the corresponding ruled radial grating. Design examples show that, in a conical diffraction monochromator covering the energy region of 1–4 keV, the holographic grating thus designed exhibits a resolving power equivalent to that of the ruled radial grating.