Influence of Trapped Electrons on the Plasma Potential in the Expander of an Open Trap

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Abstract

The influence of electrons trapped between the magnetic mirror and the Debye sheath on the potential profile in the expander of an open trap is considered. A numerical model is developed to calculate the electron distribution function in the self-consistent electrostatic potential. Passing electrons are assumed to be collisionless, while the distribution function of trapped electrons is calculated by solving the bounce-averaged kinetic equation with the Landau collision integral. The self-consistent profile of the potential is obtained. The solution is shown to agree well with Ryutov’s semi-analytical model.

Original languageEnglish
Pages (from-to)799-804
Number of pages6
JournalPlasma Physics Reports
Volume45
Issue number9
DOIs
Publication statusPublished - 1 Sep 2019

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