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Common Work Functions - Pulsed Power
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Due to the complications described in the modelling section below, it is difficult to theoretically predict the work function with accuracy. Various trends have, however, been identified. The work function tends to be smaller for metals with an open lattice, and larger for metals in which the atoms are closely packed. It is … See more In solid-state physics, the work function (sometimes spelt workfunction) is the minimum thermodynamic work (i.e., energy) needed to remove an electron from a solid to a point in the vacuum immediately outside the solid … See more Thermionic emission In thermionic electron guns, the work function and temperature of the hot cathode are critical parameters in … See more • Ashcroft; Mermin (1976). Solid State Physics. Thomson Learning, Inc. • Goldstein, Newbury; et al. (2003). Scanning Electron Microscopy and X-Ray Microanalysis. New … See more The work function W for a given surface is defined by the difference $${\displaystyle W=-e\phi -E_{\rm {F}},}$$ where −e is the charge of an electron, ϕ is the electrostatic potential in the vacuum nearby the surface, and EF is the Fermi level See more Certain physical phenomena are highly sensitive to the value of the work function. The observed data from these effects can be fitted to simplified theoretical models, allowing one to extract a value of the work function. These phenomenologically extracted work … See more • Work function of polymeric insulators (Table 2.1) • Work function of diamond and doped carbon • Work functions of common metals See more http://hyperphysics.phy-astr.gsu.edu/hbase/Tables/photoelec.html WebThe actual work function is VERY dependent (usually) several factors including morphology, preparation, gas on surface, oxidation... Aluminum is a strange one... Once … popcorn in cone shaped bags