Binding energy(KeV Binding energy (KeV Characteristic X-ray 66 KeV 0.6 KeV (N-M) Photoelectron 4.4 KeV (M-L) 100 KeV *29KeYL→K) incident Total 34KeV photon Valence electrons ® Compton Electron(Ee) Incident photon E0) Angle of deflection 入1<2 hoton Es）)