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Thermal expansion of crystals
FOR crystals with trigonal structure, such as h~ematite, the linear thermal expansion coefficient is not independent of the direction in the lattice as in the case of isotropic crystals. TheExpand
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Raman effect of corundum
The Raman effect of corundum (sapphire) was measured with an Ar+ laser source. The seven expected Raman active phonons were found and their symmetry characters determined. Assignment of the internalExpand
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Raman and infrared spectra of ethylene glycol
The Raman spectrum of ethylene glycol has been investigated in the liquid and solid states and also in aqueous solutions. The infrared absorption spectrum of the liquid has been recorded. 27 RamanExpand
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Raman effect: History of the discovery
The paper gives a historical account of the discovery of the Raman Effect, starting from Raman's voyage to Europe through the Mediterranean Sea in the summer of 1921 to the observation of modifiedExpand
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The scattering of light in fused quartz and its Raman spectrum
A detailed study of the scattering of light in fused quartz and its Raman spectrum has been made. A rectangular specimen of fused quartz of optical A quality has been used. The depolarisation factorsExpand
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Raman spectrum of alumina and the luminescence of ruby
SummaryUsing the γ 2536·5 mercury resonance radiation as exciter, the scattering of light in crystalline alumina has been investigated. The spectrum of the scattered light exhibits twoExpand
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The vibration spectrum of rutile
The long-wave lattice dynamics of rutile has been studied using a rigid ion model. The vibration frequencies for the zero wavevector have been calculated using the expressions for the frequencies ofExpand
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Raman spectrum of C-deuteratedγ-glycine (NH3+CD2COO−)
4. SummaryThe Raman spectrum of C-deuteratedγ-glycine (NH3+CD2COO−) in the crystal powder form was taken usingλ 2536·5 excitation. 26 Raman lines were recorded. Of these, eight lines are attributedExpand
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Temperature variations of the Raman frequencies in diamond
SummaryWith a high dispersion spectrograph, a diamond of the ultraviolet transparent type and the mercury λ 2536·5 excitation, the principal Raman frequency has been measured and is found to decreaseExpand
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The scattering of light in diamond and its Raman spectrum
A detailed study of the scattering of light in diamond and its Raman spectrum has been made using the λ 2536·5 mercury resonance radiation as exciter. The seattered spectrum exhibits two pairs ofExpand
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