The energy of a photon of characteristic X-ray from a Coolidge tube comes from (a) the kinetic energy of the striking electron
The energy of a photon of characteristic X-ray from a Coolidge tube comes from
(a) the kinetic energy of the striking electron
(b) the kinetic energy of the free electrons of the target
(c) the kinetic energy of the ions^of the target
(d) an atomic transition in the target.
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