The Raman cross section for the pentagonal pinch mode of C-60 at 1469 cm(-1) has been determined at a laser excitation wavelength lambda(L) = 752.5 nm. The experimental value, d sigma/d Omega = (2.09 +/- 0.29) x 10(-29) cm(2)/sr, is found to be in good agreement with predictions from an ab initio calculation based on density functional perturbation theory. A simple bond polarizability model with parameters obtained from hydrocarbon Raman measurements yields Raman intensities in C-60 within one order of magnitude of the experimental data.
Raman cross section for the pentagonal-pinch mode in buckminsterfullerene C-60
GIANNOZZI, Paolo;
1997-01-01
Abstract
The Raman cross section for the pentagonal pinch mode of C-60 at 1469 cm(-1) has been determined at a laser excitation wavelength lambda(L) = 752.5 nm. The experimental value, d sigma/d Omega = (2.09 +/- 0.29) x 10(-29) cm(2)/sr, is found to be in good agreement with predictions from an ab initio calculation based on density functional perturbation theory. A simple bond polarizability model with parameters obtained from hydrocarbon Raman measurements yields Raman intensities in C-60 within one order of magnitude of the experimental data.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
