1. Raman Spectroscopy
By P.H.Shi

2. THEORY
DEVICE
EXPERIMENT
APPLICATION

3. THEORY
Scattering of light by molecules

4. THEORY Diagram of the Rayleigh and Raman Scattering Processes
An electron is excited from the ground level and falls to the original ground level.
(b) An electron is excited from the ground level and falls to a vibrational level.
(c) An electron is excited from a vibrational level and falls to the ground level.

5. THEORY Diagram of the Rayleigh and Raman Scattering Processes 瑞利散射光
斯托克斯线
反斯托克斯线

6. THEORY Wavenumber ω Note on Units
expressed in inverse centimeters (cm−1)

7. DEVICE

8. EXPERIMENT E T2 A1 E T2 T1 A1

9. EXPERIMENT Fermi resonance
Bertran J F , et al. Spect rochimi ca Acta , 1968 , 24 :1765

10. EXPERIMENT
30% mixture of methanol in ethanol

11. EXPERIMENT
30% mixture of methanol in ethanol

12. APPLICATION
Whisky
Brandy
…….
Preference
Cost

13. Raman spectra of HXEGT★
APPLICATION
Raman spectra of HXEGT★ 1 2 3 4 5 6 7 8
(cm^-1) 好酒

14. Thanks for your listening!
GUIDANCE: Mrs Yao
Mrs Xiao
PARTNER : Liu Jin Feng