Application Note
Introduction To Raman Spectroscopy
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•Application Note: Introduction To Raman Spectroscopy
By Ahura Scientific
When light interacts with matter, several processes can occur. The light can be reflected, transmitted, absorbed, or scattered. Often, more than one of these processes will occur at the same time. The degree to which each process occurs depends upon the wavelength of light and the molecular properties of the substance.
When light scattering occurs most of the light is scattered with no change in energy or frequency. This is referred to as elastic, or Rayleigh, scattering. However, a small fraction of the scattered light (approximately 1 in 106-107 of the scattered photons) undergoes a change in energy (frequency). This change is called a Raman shift and is the basis for Raman spectroscopy, which bears the name of the physicist that first demonstrated the effect in 1927. Raman spectroscopy systems are designed to accurately measure the shifts and intensity of scattered energy which corresponds to vibrational energy changes in molecules making up the substance. This results in a Raman spectrum of the material—a map of intensity versus Raman shift.
Click Here To Download:•Application Note: Introduction To Raman Spectroscopy
