title: Energy calibration of a high-resolution inelastic x-ray scattering spectrometer.
abstract: The energy scale of a triple-axis x-ray spectrometer with meV energy resolution based on perfect silicon crystal optics is calibrated, utilizing the most recent determination of the silicon lattice parameter and its thermal expansion coefficient and recording the dispersion of longitudinal acoustic and optical phonons in a diamond single crystal and the molecular vibration mode in liquid nitrogen. Comparison of the x-ray results with previous inelastic neutron and Raman scattering results as well as with ab initio phonon dispersion calculations yields an overall agreement better than 2%.
authors.affiliation: European Synchrotron Radiation Facility, B.P. 220, F-38043 Grenoble Cedex, France.
authors.forename: Roberto
authors.initials: R
authors.lastname: Verbeni
authors.forename: Matteo
authors.initials: M
authors.lastname: D'Astuto
authors.forename: Michael
authors.initials: M
authors.lastname: Krisch
authors.forename: Maren
authors.initials: M
authors.lastname: Lorenzen
authors.forename: Alain
authors.initials: A
authors.lastname: Mermet
authors.forename: Giulio
authors.initials: G
authors.lastname: Monaco
authors.forename: Herwig
authors.initials: H
authors.lastname: Requardt
authors.forename: Francesco
authors.initials: F
authors.lastname: Sette
mesh_terms: D002138:Calibration; D003460:Crystallization; D018130:Diamond / Q000737:chemistry; D004867:Equipment Design; D007368:Interferometry; D009584:Nitrogen / Q000737:chemistry; D055095:Optics and Photonics; D055585:Physical Phenomena; D012542:Scattering, Radiation; D012825:Silicon / Q000737:chemistry; D013053:Spectrophotometry / Q000295:instrumentation*; D013696:Temperature; D014732:Vibration; D014965:X-Rays
chemical_list: D018130:Diamond; D009584:Nitrogen; D012825:Silicon