Home / Store / Journals / Electronic Articles / Fusion Science and Technology / Volume 47 / Number 1T / Pages 148-154
D. D. Ryutov
Fusion Science and Technology / Volume 47 / Number 1T / Pages 148-154
Format:electronic copy (download)
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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