1ME 501 Example Problem: Spectroscopy of Diatomic Molecules A beam of visible, pulsed laser light passes through a cell filled with H2(diatomic hydrogen). Raman scattering is observed at right angles to the direction of propagation of the laser beam. The Raman scattering process is depicted in the diagram below for a Q(J) line. A series of Q-branch Raman lines are observed with a frequency ~(,)~,,;~,RamanLaserLaserQJJJhcJcm vvvafaf120 0001(a) Derive a general expression for the frequency ~)Ramanv oftheQ-branch vibration-rotation transitions in terms of vv, ,, , ,andLaseree eeeeJxBDD
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