DiatomicMoleculeSpecExample2F2011

DiatomicMoleculeSpecExample2F2011 - 1 ME 501 Example...

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1 ME 501 Example Problem: Spectroscopy of Diatomic Molecules A beam of visible, pulsed laser light passes through a cell filled with H 2 (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 ~ (, ) ~ ,, ; ~ ,  Raman Laser Laser QJ JJ hc J c m        v vv a f a f 1 20 000 1 (a) Derive a general expression for the frequency ~ ) Raman v o f t h e Q -branch vibration- rotation transitions in terms of v v , , , , ,a n d Laser e e e e e e Jx B D D 
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