Showing papers by "J. Mayers published in 1991"
TL;DR: In this paper, the mean proton momenta along, and across, the O-H-O bond have been determined using the deep inelastic neutron scattering technique, and the momentum across the bond corresponds to a proton in a harmonic potential, that along the bond shows this potential is consistent with the double well shape.
Abstract: We report the anisotropy of the proton momentum distribution in potassium hydrogen carbonate, KHCO3. Using the deep inelastic neutron scattering technique, the mean proton momenta along, and across, the O–H–O bond have been determined. While the momentum across the bond corresponds to a proton in a harmonic potential, that along the bond shows this potential is consistent with a previously proposed double well shape.
34 citations
TL;DR: In this article, inelastic neutron scattering measurements on a poly-crystalline sample of D2O up to the O-D stretching region are presented, treating the coherent scattering contribution within the incoherent approximation.
Abstract: For the first time inelastic neutron scattering measurements on a poly-crystalline sample of D2O up to the O-D stretching region are presented. The data have been analysed, treating the coherent scattering contribution within the incoherent approximation. The O-D density of states for the deuterium sites has been extracted and compared with the available Raman and neutron spectra of ice Ih.
3 citations
TL;DR: In this paper, a new experimental extension of the neutron radiography for the determination of phase diagram has been set up, particularly useful in the case of extreme conditions like high temperatures or pressures.
Abstract: A new experimental extension of the neutron radiography for the determination of phase diagram has been set up. This method is particularly useful in the case of extreme conditions like high temperatures or pressures. As an example the determination of the He-Xe demixing transition is presented.