INELASTIC NEUTRON SCATTERING FROM AMORPHOUS Fe40Zr60 DOPED WITH DIFFERENT CONCENTRATIONS OF KRYPTON (0,1,7 at.%)

We consider a simple phenomenological theory which follows the original model of reference [10] by considering only a soft optical mode (SM) and acoustic phonon modes, with small

temperature is an intrinsic property of the ~NH) mode or is related to the temperature evolution of librational modes of the methyl group. In order to estimate the intrinsic

In the long wavelength limit well defined acoustic modes are observed and we have shown that the slope of the TA and LA dispersion curves is isotropic. This is in good agreement

A NEUTRON SCATTERING STUDY OF THE DENSITY OF VIBRATIONAL STATES OF FRACTAL SILICA AEROGELS.. Ces resultats concernent les modes de particules et la region de haute

In the present experi- ments, since most of the measurements have been done at or near the X points [I101 and [OOl], where the structure factors for two out of three

Inelastic neutron scattering of hydrogen trapped in solid

INELASTIC NEUTRON SCATTERING SELECTION RULES OF 03B1 HgI2.. - Inelastic neutron scattering is a powerful technique for the determination of the

Inelastic neutron scattering investigation of the magnetic excitations in the helimagnetic state of NiBr2... Inelastic neutron scattering investigation of the