Transcription of Raman spectroscopy: Basic principles and applications
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Raman spectroscopy: Basic principles and applications
Christian HessRaman spectroscopy: Basic principles and applications Basic principles - Resonance Raman scattering - Surface Enhanced Raman scattering (SERS) Instrumentation -Spectrometer- Excitation sources Raman in catalysis- In situ cells- In situ Raman (of working catalysts) Raman (1928) Basic principles - Resonance Raman scattering - Surface Enhanced Raman scattering (SERS) Instrumentation -Spectrometer- Excitation sources Raman in catalysis- In situ cells- In situ Raman (of working catalysts)C. Hess, 2006 Why Raman spectroscopy? Information on rotational and vibrationallevels Raman effect small but accessible by use of lasers Complementaryinformationto IRspectroscopyphomonuclear diatomic molecules, low frequency range In situ analysisof organic and inorganic compounds Analysis of aqueous solutions and solids(powders) Using resonance and surface enhancement effects ~1010pTrace gas/single molecule analysis- molecular structureIntroductionC.
Introduction to Resonance Raman scattering ... pless fluorescence pself absorption. Modern Raman spectrometer Light source (Laser) Dispersion grating Detector (CCD) sample sampling optics (objective, immersion probe) Notch filter • holographic notch filters p80% T of Raman light,
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