Calculation of the Raman frequency shifts for the α phase of solid oxygen
2017
Abstract We calculate in this study the Raman frequencies of the two librons and one vibron at various pressures at constant temperatures of 10 K and also at the temperatures of 6 and 18 K by using the volume data from the literature through the mode Gruneisen parameter for the α phase of oxygen. The Raman frequency shifts calculated for the pressure-induced librons and vibron, agree with the experimental frequency shifts in most cases, in particular at low pressures for α − O 2 . This shows that the Raman frequency shifts can be calculated adequately from the volume by means of the mode Gruneisen parameter using the method given here for the α -phase of oxygen or more generally for molecular solids.
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