IEVref: 521-01-19 ID: Language: en Status: Standard Term: Fermi-Dirac-Sommerfeld velocity distribution law Synonym1: Synonym2: Synonym3: Symbol: Definition: algebraic equation giving the number dN of particles of a quantized system in equilibrium, the velocity components of which are included in the intervals (u, u + du), (v, v + dv), (w, w + dw) : respectively: where N is the total number of particles m is the mass of the particle T is the thermodynamic temperature k is the Boltzmann constant h is the Planck constant E is the kinetic energy of a particle, $E=\frac{m}{2}\left({u}^{2}+{v}^{2}+{w}^{2}\right)$ EM is the inner work function dN/N represents the probability that a particle has its components within the intervals considered. Publication date: 2002-05 Source: Replaces: Internal notes: 2017-06-02: Cleanup - Remove Attached Image 521-01-191.gif 2017-06-02: Cleanup - Remove Attached Image 521-01-192.gif CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: