A triple-axis neutron spectrometer was used to investigate the scattering function of a 15 M NaOD solution in D2O. The solute acts as an amorphising agent, so that both the liquid and amorphous phases could be studied by changing the temperature from 300 K to 77 K. The experiment was directed to the study of the collective excitations. A dispersion relation could be established in both phases in the momentum range 0.4≤Q≤2.4Å−1 that was investigated in the experiment, though at the higherQ values the excitation energy width was found to be comparable to the energy.
Collective excitations in the liquid and amorphous state of D2O with soluted NaOD
SACCHETTI, Francesco
1980
Abstract
A triple-axis neutron spectrometer was used to investigate the scattering function of a 15 M NaOD solution in D2O. The solute acts as an amorphising agent, so that both the liquid and amorphous phases could be studied by changing the temperature from 300 K to 77 K. The experiment was directed to the study of the collective excitations. A dispersion relation could be established in both phases in the momentum range 0.4≤Q≤2.4Å−1 that was investigated in the experiment, though at the higherQ values the excitation energy width was found to be comparable to the energy.File in questo prodotto:
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