Bestimmung der Ånderung der Gitterkonstanten und des anisotropen Debye–Waller‐Faktors von Graphit mittels Neutronenbeugung im Temperaturbereich von 25 bis 1850°C

摘要: With a double-axis spectrometer the neutron-scattering cross section dσ/dΩ of polycrystalline graphite has been measured as function temperature. The elastic coherent scattering yielded variations lattice constants for directions parallel and perpendicular to c axis hexagonal lattice. For these also Debye–Waller factors have determined from them mean-square vibration amplitudes atoms effective Debye temperatures calculated.