1. An x-ray generation device, comprising:a housing for maintaining a low fluid pressure environment;
a contact material within the housing;
a band including an inner surface and an outer surface, the inner surface in frictional contact with the contact material; and
an electron target proximate a location of frictional contact between the band and the contact material, the electron target outside an area defined by the band;
wherein the outer surface of the band includes a textured surface including a plurality of surface discontinuities.