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RF
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RF
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RM
. Archives of physical medicine and rehabilitation . vi-dently it is desirable ( 1 ) to choose ametal for the target which has a highmelting point; (2) to keep the targetas cool as possible. In Table V will be found numericaldata relating to certain metals which areof interest to the x-ray worker. It will be seen that platinum, whichfor several years was the metal used tothe greatest extent as anticathode, is byno means the most satisfactory. Com-pare it with tungsten, for example. Itsmelting point, 1 750 C, is little morethan half that of tungsten, 3300 C.Moreover, platinum is one of the meta-stock-foto