Quantum-mechanical constraints on which transitions between stationary states are allowed by a given radiation-matter coupling. Electric-dipole-allowed transitions must change a multipole integral; IR requires ∂μ/∂Q ≠ 0, Raman requires…
Quantum-mechanical constraints on which transitions between stationary states are allowed by a given radiation-matter coupling. Electric-dipole-allowed transitions must change a multipole integral; IR requires ∂μ/∂Q ≠ 0, Raman requires…