Evaluation of ambipolar potential barrier in the gas dynamic trap by Doppler spectroscopy

Andrej Lizunov, Vladimir Maximov, Andrey Sandomirsky

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

The recently developed Doppler spectroscopy diagnostic has been used to evaluate the height of the ambipolar potential barrier forming in the gas dynamic trap (GDT) plasma between the central cell and the region with a large magnetic expansion ratio beyond the mirror. The diagnostic technique based on the gas jet charge exchange target, allowed to measure the potential profile along the line of sight covering the radial range from the axis to the limiter. The on-axis potential drop was found to be 2.6 ÷ 3.1 in units of the central plane electron temperature, which supports the existing theoretical understanding of suppression of electron thermal conductivity in the GDT expander.

Язык оригиналаанглийский
Номер статьи076003
ЖурналNuclear Fusion
Том62
Номер выпуска7
DOI
СостояниеОпубликовано - июл 2022

Предметные области OECD FOS+WOS

  • 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ

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