Raman spectroscopy is an approach which measures the energy of photons produced by the inelastic scattering of homochromous excitation photons. Throughout excitation, photons interact with the electron cloud of an analytic and also a small proportion of those photons experience an alteration in energy because of the interaction.
This energy switch contrasts with molecular vibrations, rotations, and also other low-frequency manners and can be plotted by instrumental working applications to make a spectrum. Raman spectroscopy is frequently described as being a freeway to FT-IR because both methods are utilized to probe vibrational levels of energy but dissimilar selection rules allow FTIR and Raman to cross-examine various collections of adrenal glands.
Raman scattering can be an inherently low likelihood occurrence and consequently, the Raman scattering cross-section of a specific analytic will typically be a few orders of magnitude less compared to corresponding FTIR absorption cross-section. Basically, it ensures that the sensitivity of Raman spectroscopy is significantly lower compared to FTIR spectroscopy.
There are many advanced level Raman spectroscopy methods that generate a stronger Raman intensity in comparison with impulsive Raman scatterings such as Resonance Raman Spectroscopy, Surface Enhanced Raman Spectroscopy (SERS), Coherent Anti-Stokes Raman Spectroscopy (CARS), and Suggestion Improved Raman Spectroscopy (TERS).