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timo1990
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What is the difference between raman-spectroscopy and usual spectroscopy?
timo1990 said:What is the difference between raman-spectroscopy and usual spectroscopy?
The main difference between Raman spectroscopy and usual spectroscopy is the type of information they provide. While usual spectroscopy measures the absorption or emission of light by a sample, Raman spectroscopy measures the scattering of light by a sample. This scattering results in changes in the wavelength of the light, which can be used to identify the chemical composition of the sample.
Raman spectroscopy works by shining a monochromatic light, such as a laser, onto a sample. The scattered light is then collected and analyzed for changes in wavelength. These changes are caused by the vibration of molecules in the sample, which can provide information about the chemical bonds present. The resulting Raman spectrum is a unique fingerprint of the sample's chemical composition.
Raman spectroscopy has several advantages over usual spectroscopy. Firstly, it can be used to analyze samples in both solid and liquid forms, while usual spectroscopy is limited to liquid samples. Additionally, Raman spectroscopy is non-destructive, meaning the sample does not need to be altered or destroyed in order to obtain a spectrum. This makes it a valuable tool for analyzing delicate or valuable samples.
One limitation of Raman spectroscopy is that it is not as sensitive as usual spectroscopy. This means that it may not be able to detect very small amounts of a substance in a sample. Raman spectroscopy is also limited in its ability to analyze samples that have strong fluorescence, as the fluorescence can interfere with the Raman signal.
Raman spectroscopy has a wide range of applications and is commonly used in industries such as pharmaceuticals, forensics, materials science, and environmental analysis. It is also commonly used in research and development in fields such as chemistry, biology, and physics. The non-destructive nature and ability to analyze a variety of sample types make Raman spectroscopy a valuable tool in many industries.