Spatially periodic structures in electron swarms and the Franck-Hertz experiment

Robson, R.E., Li, B., and White, R.D. (2000) Spatially periodic structures in electron swarms and the Franck-Hertz experiment. Journal of Physics B: Atomic, Molecular and Optical Physics, 33 (3). pp. 507-520.

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Abstract

The seminal experiment of Franck and Hertz, which helped lay the foundations of quantum and atomic physics, is investigated through solution of the Boltzmann equation, using both eigenfunction expansion methods and spatial finite-difference techniques. We consider electrons in both a model gas and in mercury, the gas originally used by Franck and Hertz, and focus upon the effects of both inelastic and elastic collisions. It is pointed out that the periodic spatial structures encountered in the Franck-Hertz experiment have a physical origin similar to the oscillatory phenomena observed by Fletcher and others previously in low-pressure, low-current discharges, and by Winkler et al , and other contemporary authors in simulations of low-temperature plasmas.

Item ID: 12927
Item Type: Article (Research - C1)
ISSN: 1361-6455
Keywords: Boltzmann equation; Franck-Hertz experiment; low current discharge; low temperature plasmas
Date Deposited: 20 Aug 2014 06:47
FoR Codes: 02 PHYSICAL SCIENCES > 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics > 020201 Atomic and Molecular Physics @ 51%
02 PHYSICAL SCIENCES > 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics > 020204 Plasma Physics; Fusion Plasmas; Electrical Discharges @ 49%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970102 Expanding Knowledge in the Physical Sciences @ 100%
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