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Asian Journal of Physics Vol 32, Nos 1 & 2 (2023) 1-4

Raman Spectroscopy: an elegant and effective method, from single crystals to the planet Mars

Philippe Colomban
Laboratory “from molecule to nano-objects”(MONARIS UMR8233), Sorbonne Université,
CNRS, 4 Place Jussieu, 75005 Paris, France

Illuminated by a monochromatic light wave (e.g. a laser), matter interacts with this wave in several ways: most of the energy is re-emitted without change in wavelength in all directions (elastic Rayleigh scattering); a much weaker part is emitted after having received or given up energy to the material by coupling between the magnetic and electric vectors of the wave with the variations of the electronic distributions (in other words the chemical bonds). This inelastic scattering is called the Raman Effect, named after the scientist who first published his evidence 95 years ago and for this won the Nobel Prize in 1930.
The year 2023 marks the 95th anniversary of the discovery of the Raman effect. After the discovery of the Raman Effect in 1928, the researchers all over the world became interested in this new technique which is based on the inelastic scattering of light, and today it has established itself as an indispensable technique of investigating the molecular species in all phases of matter and as a tool for research in interdisciplinary fields encompassing almost all branches of science [1]. © Anita Publications. All rights reserved.

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