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Home / Publications / Journals / Fusion Science and Technology / Volume 47 / Number 1T

Axial Electron Heat Loss from Mirror Devices Revisited

D. D. Ryutov

Fusion Science and Technology / Volume 47 / Number 1T / January 2005 / Pages 148-154

Technical Paper / Open Magnetic Systems for Plasma Confinement

An issue of the axial electron heat loss is of a significant importance for mirror-based fusion devices. This problem has been considered in a number of publications but it is still shrouded in misconceptions. In this paper we revisit it once again. We discuss the following issues: 1) Formation of the electron distribution function in the end tank at large expansion ratios; 2) The secondary emission from the end plates and the ways of suppressing it (if needed); 3) Ionization and charge exchange in the presence of neutrals in the end tanks; 4) Instabilities caused by the peculiar shape of the electron distribution function and their possible impact on the electron heat losses; 5) Electron heat losses in the pulsed mode of operation of mirror devices.

 
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