molecular rotation
2.Basing on the diatomic molecular vibration rotation wavefunction under the harmonic osillator approximation and by using perturbatiing throry, we have obtained the diatomic molecular wavefunction and the Franck Condon Integration expression concerned with non harmonic osillator and non rigid rotator approximation.
3.Start from the wave function of molecular electromic state which is containing the vibration-rotation interaction term. In accordance with the program be selfweaved,we calculate successfully Franck-Condon factors of main molecular band systems in high temperature air,such as O2 (S-R ), N2 (1+ )N2 (2+ ),N(2+) (1-),NO (β) and NO (r),Thus, the folowing relation are obtained;
4.The carbon-13 relaxation parameters were measured for star-shaped polystyrenes with different branch degree and different molecular weight of parent chain in a 20% (W/V) solution. The backbone segmental motion is interpreted in terms of the lg-X2, Cole-Cole and a conformational jump model. The internal rotation motion of aromatic ring is analysed and the activation energies and jump rates are obtained.
7.Because the vibration and rotation of molecule can induce change of Raman shift, Raman intensity and shape of Raman band, the study of Raman spectrum can provide information of molecular structure, so we can do research in druggery detection, trace analysis and vibrational spectrum investigation of molecules through the study of Raman spectrum.

