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← ScienceWhich outcome results when an electron scatters inelastically off a crystal lattice?
A)Phonon emission due to electron slowing✓
B)Increased electron kinetic energy gained
C)Elastic backscattering remains unchanged
D)Destructive interference of the electrons
💡 Explanation
Phonon emission reduces electron velocity via electron-phonon interaction. The electron loses energy to lattice vibrations because the inelastic collision transfers energy, therefore, phonons are emitted, rather than energy gained, in elastic scattering the kinetic energy would stay constant.
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