X-ray spectrum
If electron loses all its energy, eVaccel= hfmax = hc/?min
?min is independent of the material and depends only on KE of electrons
note that if h=0, then ?min =hc/eVaccel would be zero!
the peaks at larger ? depend on the material
arise when the incident electron knocks out an inner electron
this leaves a hole in an inner shell which is filled by an outer electron with the emission of an x-ray photon