Zobrazeno 1 - 10
of 727
pro vyhledávání: '"Sette, F"'
Publikováno v:
Physical Review Letters 88, 255503 (2002)
The high frequency collective dynamics of liquid hydrogen fluoride is studied by inelastic x-ray scattering on the coexistence curve at T = 239 K. The comparison with existing molecular dynamics simulations shows the existence of two active relaxatio
Externí odkaz:
http://arxiv.org/abs/2308.13419
The phase diagram of $\alpha$-cyclodextrin/water/4-methylpyridine solutions, a system undergoing inverse melting, has been studied by differential scanning calorimetry, rheological methods, and X-rays diffraction. Two different fluid phases separated
Externí odkaz:
http://arxiv.org/abs/0802.4046
The acoustic sound dispersion of nitrogen in its liquid and supercritical phases has been studied by Inelastic X-Ray Scattering. Approaching supercritical conditions, the gradual disappearance of the positive sound dispersion, characteristic of the l
Externí odkaz:
http://arxiv.org/abs/cond-mat/0512383
Autor:
Pontecorvo, E., Krisch, M., Cunsolo, A., Monaco, G., Mermet, A., Verbeni, R., Sette, F., Ruocco, G.
High-resolution, inelastic x-ray scattering measurements of the dynamic structure factor S(Q,\omega) of liquid water have been performed for wave vectors Q between 4 and 30 nm^-1 in distinctly different thermodynamic conditions (T= 263 - 420 K ; at,
Externí odkaz:
http://arxiv.org/abs/cond-mat/0501205
Inelastic x-ray scattering and Brillouin light scattering measurements of the dynamic structure factor of liquid hydrogen fluoride have been performed in the temperature range$ T=214\div 283 K$. The data, analysed using a viscoelastic model with a tw
Externí odkaz:
http://arxiv.org/abs/cond-mat/0403389
Autor:
Ruzicka, B., Scopigno, T., Caponi, S., Fontana, A., Pilla, O., Giura, P., Monaco, G., Pontecorvo, E., Ruocco, G., Sette, F.
The dynamic structure factor, S(Q,w), of vitreous silica, has been measured by inelastic X-ray scattering in the exchanged wavevector (Q) region Q=4-16.5 nm-1 and up to energies hw=115 meV in the Stokes side. The unprecedented statistical accuracy in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402161
The acoustic excitations of the expanded metal solutions Li-NH$_3$ have been measured by inelastic X-ray scattering as a function of the electron density by changing the Li concentration. The dielectric functions of these model metals with very low e
Externí odkaz:
http://arxiv.org/abs/cond-mat/0310336
Autor:
d'Astuto, M., Mang, P. K., Giura, P., Shukla, A., Mirone, A., Krisch, M., Sette, F., Ghigna, P., Braden, M., Greven, M.
Publikováno v:
Int. J. Mod. Phys. B, Vol. 17 (2003) p.484-492
Inelastic x-ray scattering (IXS) with very high (meV) energy resolution has become a valuable spectroscopic tool, complementing the well established coherent inelastic neutron scattering (INS) technique for phonon dispersion investigations. In the st
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210700
Autor:
Pilla, O., Caponi, S., Fontana, A., Montagna, M., Rossi, F., Viliani, G., Angelani, L., Ruocco, G., Monaco, G., Sette, F.
We present a numerical simulation study of the density-dependence (rho = 2.2 - 4.0 g/cm^3) of the high-energy collective dynamics in vitreous silica at mesoscopic wavevectors (Q = 1 - 18 nm^-1). The density-dependence of the longitudinal and transver
Externí odkaz:
http://arxiv.org/abs/cond-mat/0209519
The microscopic dynamics in liquid gallium (l-Ga) at melting (T=315 K) has been studied by inelastic x-ray scattering. We demonstrate the existence of collective acoustic-like modes up to wave-vectors above one half of the first maximum of the static
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208594