Dephasing times of the vibrons in alpha -N2 and in alpha -(15N2)x(14N2)1-x mixed crystals.
作者： Jan De Kinder , Etienne Goovaerts , August Bouwen , Dirk Schoemaker
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摘要: Mesures Raman anti-stokes coherentes a resolution temporelle de l'ordre la picoseconde sur les vibrons des monocristaux α-N 2 et cristaux mixtes α-( 15 N ) x ( 14 1−x . Le dephasage observe dans α est plus rapide que le exponentiel. Ceci bien decrit par l'ajout d'un facteur Gaussien. La composante Gaussienne attribuee l'elargissement inhomogene. exponentiel attribue diffusion partir librons anharmoniques phonons basse frequence. Determination decomposition groupe du Ag-Tg sa variation thermique. Dans isotopiques molecules n'agissent pas comme centres piegeurs
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