![]() ![]() This consequence is largely because electrons satisfy the Pauli exclusion principle: only one electron may occupy an energy level and lower-energy electron states are already full, so the new electrons must occupy higher and higher energy states. As the number of electrons in the system increases (with fixed temperature and volume), the internal chemical potential increases. where qs is the inverse Thomas-Fermi screening length, n the density of the electron gas and a0 the Bohr-radius. The internal chemical potential (closely related to Fermi level, see below) of a system of electrons describes how much energy is required to put an extra electron into the system, neglecting electrical potential energy. One can argue that this topic, which is often absent from electromagnetic textbooks, is too important to ignore in developing an understanding of the electric-field behav ior in conductors. The field electric lines exit or enter the conductor normal to the conductor surface. screening from a conductor 14, avoiding more-complicated Thomas-Fermi treatments. 1.3 Electrons in equilibrium, nonlinear equationÄerivation Relation between electron density and internal chemical potential Answer (1 of 5): A semiconducting tape is wrapped around the conductor in a high voltage cable to remove stress points in the electric field developed by the conductor.1.1 Relation between electron density and internal chemical potential. ![]()
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