Behavior of suprathermal electrons at the Uragan-3M torsatron after RF heating off
For the past decades the microwave radiometry is a routinely used diagnostics to obtain the information on temporal evolution and radial profile of the bulk electron temperature at Uragan-3M torsatron plasma experiments. However, in the case of low plasma density operation we observe the high leve...
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| Date: | 2016 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2016
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| Series: | Вопросы атомной науки и техники |
| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/115472 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | Behavior of suprathermal electrons at the Uragan-3M torsatron after RF heating off / N.V. Zamanov, R.O. Pavlichenko, A.E. Kulaga // Вопросы атомной науки и техники. — 2016. — № 6. — С. 317-320. — Бібліогр.: 7 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Summary: | For the past decades the microwave radiometry is a routinely used diagnostics to obtain the information on
temporal evolution and radial profile of the bulk electron temperature at Uragan-3M torsatron plasma experiments.
However, in the case of low plasma density operation we observe the high level of electron cyclotron emission at the
frequencies that match the second and third harmonics of the extraordinary mode after RF heating pulse off. This
effect could be explained with the production of the suprathermal electrons. Study of the behavior suprathermal
electrons is of great importance because: (a) suprathermal electrons significantly distort or make it impossible to
measure the thermal electron temperature; (b) such electrons influence the ionization process, the excitation of the
plasma ions and may lead to the occurrence of several plasma instabilities. The present work describes the results of
experimental studies of the behavior of the emission after turning off the RF heat pulse |
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