Print Email Facebook Twitter High-resolution phonon energy shift measurements with the inelastic neutron spin echo technique Title High-resolution phonon energy shift measurements with the inelastic neutron spin echo technique Author Li, Fankang (Oak Ridge National Laboratory) Shen, Jiazhou (Indiana University - Purdue University) Parnell, S.R. (TU Delft RST/Fundamental Aspects of Materials and Energy) Thaler, Alex N. (Oak Ridge National Laboratory) Matsuda, Masaaki (Oak Ridge National Laboratory) Keller, Thomas (Max-Planck-Institut für Festkörperforschung) Delaire, Olivier (Duke University) Pynn, Roger (Oak Ridge National Laboratory; Indiana University - Purdue University) Fernandez-Baca, Jaime A. (Oak Ridge National Laboratory) Date 2019 Abstract The energy resolution of the conventional way of measuring a small change in a phonon dispersion curve using neutron scattering is restricted by the relatively coarse intrinsic resolution ellipsoid of the neutron triple-axis spectrometer (TAS). By implementing inelastic neutron spin echo on the host TAS using the Larmor precession of the neutron spin, the energy resolution of such measurements can be further improved without reducing the resolution ellipsoid. Measurements of the temperature-dependent phonon energy change are demonstrated using superconducting magnetic Wollaston prisms at the HB-1 instrument of the High-Flux Isotope Reactor at Oak Ridge National Laboratory, and the achievable resolution is <10 µeV. Subject high energy resolutioninelastic neutron scatteringinelastic neutron spin echoneutron Larmor labeling To reference this document use: http://resolver.tudelft.nl/uuid:1c13c0ca-3fa8-429a-9164-ed3df2278ce4 DOI https://doi.org/10.1107/S1600576719008008 ISSN 0021-8898 Source Journal of Applied Crystallography, 52 (4), 755-760 Part of collection Institutional Repository Document type journal article Rights © 2019 Fankang Li, Jiazhou Shen, S.R. Parnell, Alex N. Thaler, Masaaki Matsuda, Thomas Keller, Olivier Delaire, Roger Pynn, Jaime A. Fernandez-Baca Files PDF in5021.pdf 806.24 KB Close viewer /islandora/object/uuid:1c13c0ca-3fa8-429a-9164-ed3df2278ce4/datastream/OBJ/view