Molecular Spectroscopy
Permanent Electric Dipole Moments
NO
NO
YES
YES YES
YES
Linear Molecule Angular Momenta
Molecule axis 9pped w.r.t space axis
CO – JPL Line Catalog
CO – JPL Line Catalog
Frequency Unc. Log(Int.) El (cm-‐1) gu Tag Ju Jl
Linear Molecules
Symmetric Top
Molecular Poten9al Energy
Energy Levels – Angular Momentum Expansion
Amano 2010, Journal of Molecular Spectroscopy 259, 16
E = B [J(J+1)]1 -‐ D [J(J+1)]2 + H [J(J+1)]3 + …