Rotational Raman Spectroscopy Flashcards
1
Q
Physical mechanism for rotational Raman
A
Interaction of electric field of light with polarisability of molecule, photons are scattered, not absorbed
2
Q
What’s an induced dipole
A
Distortion of electron distribution
3
Q
Gross selection rule rotational Raman
A
Molecule must be anisotropically polarisable so all molecules except spherical rotors
4
Q
Specific selection rule rotational Raman
A
Δj = +-2
5
Q
Stoke lines rotational Raman
A
Δj = +2
6
Q
Antistoke lines rotational Raman
A
Δj = -2
7
Q
Raleigh line
A
Usually 1000x brighter than stokes/anti stokes lines
8
Q
Diatomic rotational Raman spectral lines are spaced by
A
4B
