Inelastic neutron scattering of deep glassy ice VI

Water displays a highly complex phase diagram that is key to a range of critical processes. Using ISIS facilities, our group has discovered three new phases of ice and most recently, we could show that doping can selectively remove one of the phases from the phase diagram. Regarding the ice XV high-pressure phase of ice, a recent study has suggested that a 2nd state of ice XV exists if the sample is prepared under very high pressures. However, we subsequently argued on the basis of calorimetric and neutron diffraction data that in fact a "deep glassy" state of ice is obtained. Using inelastic neutron diffraction, we now wish to probe the local structure of the deep glassy ice in detail. We are confident that this will reveal structural information not accessible with diffraction. In addition to a high impact on ice research, deep glassy materials are currently of strong general interest.