Distribution of Neutral Gas in the Expander of an Open Trap
https://doi.org/10.25205/2541-9447-2025-20-2-19-38
Abstract
In an open magnetic trap for confining high-temperature plasma, the key problem is longitudinal heat loss, which is addressed by a plasma flow expander. Previous studies have shown that neutral gas can reduce the expander efficiency. In this paper, a model is proposed that describes the distribution of neutral gas inside the plasma and beyond it to the expander walls. The results show that the gas concentration near and inside the plasma is orders of magnitude lower than near the walls. This indicates less stringent restrictions on the maximum concentration of neutrals inside the plasma.
About the Authors
E. A. Fedorenkov
Budker Institute of Nuclear Physics of SB RAS;
Novosibirsk State University
Russian Federation
Russian Federation
Eduard A. Fedorenkov, Junior Researcher
Novosibirsk
A. D. Beklemishev
Budker Institute of Nuclear Physics of SB RAS;
Novosibirsk State University
Russian Federation
Russian Federation
Aleksey D. Beklemishev, Candidate of Physical and Mathematical Sciences, Leading Researcher
Novosibirsk
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Review
For citations:
Fedorenkov E.A., Beklemishev A.D. Distribution of Neutral Gas in the Expander of an Open Trap. SIBERIAN JOURNAL OF PHYSICS. 2025;20(2):19-38. (In Russ.) https://doi.org/10.25205/2541-9447-2025-20-2-19-38
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