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Raman Spectrum of Diamond [PDF]
Nature, 1945 THE new approach to the dynamics of crystal lattices made by Sir C. V. Raman1 leads in the case of diamond to the result2,3 that the atomic vibration spectrum of this crystal should exhibit eight distinct monochromatic frequencies. Of these, the highest frequency (1,332 cm.-1 in spectroscopic units) corresponds to the triply degenerate vibration of the
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Drug Content Uniformity: Quantifying Loratadine in Tablets Using a Created Raman Excipient Spectrum
Pharmaceutics, 2021 Raman spectroscopy has proven valuable for determining the composition of manufactured drug products, as well as identifying counterfeit drugs. Here we present a simple method to determine the active pharmaceutical ingredient (API) mass percent in a ...
Amelia Farquharson +7 more
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Application of laser Raman spectroscopic parameters of coal maceral analysis with different maturity
Shiyou shiyan dizhi, 2022 Laser Raman spectroscopy has shown a good application prospect for maceral analysis. Raman spectroscopic analysis of different macerals (e.g., vitrinite, semifusinite and macrinite) in coal samples with different maturity (%Ro=0.49%-1.88%) was carried ...
Zhiwei GAO +6 more
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Raman Spectroscopy of the Sampleite Group of Minerals [PDF]
, 2007 Raman and infrared spectroscopy has enabled insights into the molecular structure of the sampleite group of minerals. These minerals are based upon the incorporation of either phosphate or arsenate with chloride anion into the structure and as a ...
Arana Castillo +44 more
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GAJARDOITE-(NH4), (NH4)As3+ 4O6Cl2[(Ca0.5□0.5)(H2O)5], A NEW MINERAL FROM THE KHOVU-AKSY DEPOSIT, EASTERN SIBERIA, RUSSIA [PDF]
МинералогияThe new mineral gajardoite-(NH4), ideally (NH4)As3+4O6Cl2[(Ca0.5□0.5)(H2O)5], is found at the Khovu-Aksy Ni-Co deposit, Republic of Tyva, Russia. Gajardoite-(NH4) occurs as tiny lamellar coarsely hexagonal or irregular curved and divergent crystals up to
A.V. Kasatkin +5 more
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East European Journal of Physics, 2023 Silicon doped with gadolinium and silver impurities were studied using a Renishaw InVia Raman spectrometer. Registration and identification of both crystalline and amorphous phase components in the samples was carried out.
Sharifa B. Utamuradova +3 more
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Classification of deep-sea cold seep bacteria by transformer combined with Raman spectroscopy
Scientific Reports, 2023 Raman spectroscopy is a rapid analysis method of biological samples without labeling and destruction. At present, the commonly used Raman spectrum classification models include CNN, RNN, etc.
Bo Liu +4 more
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Frequency shifts in stimulated Raman scattering [PDF]
, 1980 The nonresonant contributions to the nonlinear susceptibility χ(3) produce a frequency chirp during stimulated Raman scattering. In the case of transient stimulated Raman scattering, the spectrum of the generated Stokes pulse is found at higher ...
Kaiser, Wolfgang, Zinth, Wolfgang
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Medžiagotyra, 2023 Cement-based cementitious materials present an alkaline environment and mainly exist in the form of Ca(OH)2. Phosphogypsum, as a retarder of cementitious materials, is often added to cement instead of gypsum, and the fluorine by-product of phosphogypsum ...
Jianhui FAN, Xuebing WANG, Shengbo GUO
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Raman Spectrum of Diamond [PDF]
Nature, 1930 In the course of an examination of the infra-red and ultra-violet regions of the spectrum of a large number of diamonds, we have come across one which, unlike the others, is transparent both at about 8μ, and also in the ultra-violet so far out as λ2300.
R. ROBERTSON, J. J. Fox
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