Application of the Fermi Statistics to the Distribution of Electrons Under Fields in Metals and the Theory of Electrocapillarity

Details Application of the Fermi Statistics to the Distribution of Electrons Under Fields in Metals and the Theory of Electrocapillarity Application of the Fermi Statistics to the Distribution of Electrons Under Fields in Metals and the Theory of Electrocapillarity

Jun 1928

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1928phrv...31.1051r&link_type=abstract

Physical Review, vol. 31, Issue 6, pp. 1051-1059

Statistics

18

Scientific paper

It is assumed that each atom in mercury is ionized into a positive ion and an electron. Because of the crowded state of the positive ions it is supposed that they cannot move in an electric field, while, following Sommerfeld and Pauli, the electrons are assumed to act like a completely degenerate gas following the Fermi statistics. The distribution of electrons under an electric field due to a charge on the surface of the metal is discussed, and a relation derived which gives the charge on the surface in terms of the potential difference between surface and interior. To a first approximation the charge and potential difference are proportional to each other, as if there were a condenser of constant capacity at the surface. In order to find the capacity an estimate must be made of the dielectric constant of the mercurous ions of the mercury. This is done with the aid of measurements of the refractive index of mercurous ions. The magnitude of the equivalent capacity is such that, when considered in conjunction with the diffuse layer of ions in the solution, electrocapillary curves can be explained.

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