Applet Launcher
Applet 1 Applet 2 Applet 3
Applet 4 Applet 5 Applet 6
  Rotational Raman Spectroscopy
Interpreting the Spectrum page 1 of 2
Practical Navigator
The Raman Effect
Experimental Techniques
1. Rotational Raman Spectroscopy
Interpreting the Spectrum
Effect of Bond Length
Centrifugal Distortion
Intensities of Spectral Lines
Nuclear Spin Statistics
2. Real Diatomic Molecules
Spectrum of Nitrogen
Isotopic Substitution
Nuclear Spin Statistics
Predict the Spectrum of Oxygen
  The first applet uses the Rigid Rotor model to simulate the Rotational Raman Spectrum of an hypothetical molecule, , excited with a 333nm laser. The molecule has the following initial properties:

Mass 1u
Nuclear Spin 1/2
Bond Length 100pm
Centrifugal Distortion Constant, D zero

For Part one answer all questions using the Rigid Rotor Model.

Lines are labelled by the J value of the level from which the transition takes place. The first Stokes line is a transition from the rotational ground state, Stokes(0). The first Anti-Stokes line takes place from the energy level with J = 2 to the ground state, Anti-Stokes(2).
    << previous page next page >>