Tungsten alloy anode is the most commonly
used target material because it has a high atomic number which increases the intensity
of the x-rays, and because it has a sufficiently high melting point that it can
be allowed to become white hot.
During operation, the tungsten alloy anode
can get as high as 2,700 degrees centigrade. In many cases, it is surrounded by
copper - the high heat capacity of copper improves the dissipation of heat. It
is very suitable for X-ray radiation.
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