Phonon dynamics in liquid gallium

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We propose to measure the inelastic scattering S(Q,E) maps from gallium in its liquid phases across a wide range of temperatures. This proposal is based on a new prediction for the existence of transverse acoustic modes that show a gap in wave vector at zero energy. Performing an inelastic neutron scattering measurement at ISIS will give us a much richer data set than possible from only x-ray scattering, including obtaining data at higher values of...
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