A shielding disk for managing x-ray emission form a stationary anode x-ray
tube is disclosed. The stationary anode x-ray tube includes an anode
housing and a stainless steel can that together form an evacuated
enclosure and respectively contain a stationary anode and a cathode
assembly. The shielding disk, comprised of tungsten, is interposed
between the anode housing and the can, and is formed with a region, such
as a hole, formed through a central portion thereof. During tube
operation, electrons pass through the shielding disk hole to impact a
target surface on the anode and produce x-rays. Those x-rays that do not
pass through a window defined in the anode housing to exit the tube but
instead emanate toward the can, are intercepted and absorbed by the
shielding disk before entering the can. This results in a reduced need
for lead shielding disposed about external surfaces of the x-ray tube.