W - Tungsten: Supplement Vol A: Part 4: Surface Properties, Electron Emission (Gmelin Handbook of Inorganic and Organometallic Chemistry - 8th Edition / W. Wolfram. Tungsten (System-NR. 54)) - Tapa dura

This volume describes physical properties of tungsten metal and covers surface properties, electron emission and field evaporation. Tungsten surfaces are probably the most extensively studied metal surfaces. Recently, experimentalists and theorists have focused their interest on the atomic structure, lattice dynamics, and electronic properties of the W(100) surface. While the structure of the reconstructed low-temperature surface is well established, there are still unresolved problems concerning the structure at and above room temperature, the nature of the phase transition, and the driving force for the reconstruction. Pioneering work in areas such as thermionic or field emission is comprehensively discussed. Recent studies of valence-band and core-level spectra provide detailed information on intrinsic surface properties.