X-RAY REFLECTOR EXHIBITING TAPER, METHOD OF MAKING SAME, NARROW BAND X-RAY FILTERS INCLUDING SAME, DEVICES INCLUDING SUCH FILTERS, MULTISPECTRAL X-RAY PRODUCTION VIA UNISPECTRAL FILTER, AND MULTISPECTRAL X-RAY PRODUCTION VIA MULTISPECTRAL FILTER

摘要

An x-ray reflector may include: a substrate; a first layer formed on the substrate, the first layer including a relatively higher-Z material, where Z represents the atomic number; and a second layer formed on the first layer, the second layer including a relatively lower-Z material; at least one of the first layer and the second layer exhibiting a taper in an axial direction extending between a first end of the substrate and a second end of the substrate.