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The inverse Raman effect is a form of Raman scattering first noted by W. J. Jones and Boris P. Stoicheff. In some circumstances, Stokes scattering can exceed anti-Stokes scattering; in these cases the continuum (on leaving the material) is observed to have an absorption line (a dip in intensity) at ν L +ν M.
A comprehensive theory of the effect was given by Lombardi and Birke. [101] Surface-enhanced resonance Raman spectroscopy (SERRS) – A combination of SERS and resonance Raman spectroscopy that uses proximity to a surface to increase Raman intensity, and excitation wavelength matched to the maximum absorbance of the molecule being analysed.
[88] [89] Use of the English versions, "Raman effect" and "Raman lines" immediately followed. [90] [22] [91] In addition to being a new phenomenon itself, the Raman effect was one of the earliest proofs of the quantum nature of light. Robert W. Wood at the Johns Hopkins University was the first American to confirm the Raman effect in the early ...
In the harmonic approximation, it can be shown that overtones are forbidden in both infrared and Raman spectra. However, when anharmonicity is taken into account, the transitions are weakly allowed. [10] In Raman and infrared spectroscopy, the selection rules predict certain vibrational modes to have zero intensities in the Raman and/or the IR ...
He was the author of a monograph, two volumes of 'Source Book on Raman Effect' and contributed chapters to several scientific texts, [3] besides delivering several orations. Krishnan served as a member of the International Committee on Ferro-electricity and sat in the International Advisory Committee for Conferences on Raman Spectroscopy. [3]
The Kramers–Heisenberg dispersion formula is an expression for the cross section for scattering of a photon by an atomic electron.It was derived before the advent of quantum mechanics by Hendrik Kramers and Werner Heisenberg in 1925, [1] based on the correspondence principle applied to the classical dispersion formula for light.
Donald Trump's presidential-election victory has fueled major moves in financial markets. Investors are anticipating tax cuts and looser regulation from Trump. Here are five charts that show how ...
His 1964 paper on the Raman effect was one of the 100 most cited papers in all areas of physical science between 1960 and 1969. He has published more than 190 papers and 3 books, one of which (the three editions of The Quantum Theory of Light) is recognized internationally and has been translated into Russian and Japanese. [4]