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Зв’язок гелiконних антен з плазмою бiля електронно-циклотронного резонансу
Two inductive antennas, which are usually used for the excitation of a helicon discharge on the wave azimuthal modes m = 1 and m = 0, demonstrate unexpectedly different properties near the electron-cyclotron frequency wce. Though the alternating inductive electric field E produced by the antenna m =...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Publishing house "Academperiodika"
2019
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| Subjects: | |
| Online Access: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2019010 |
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| Summary: | Two inductive antennas, which are usually used for the excitation of a helicon discharge on the wave azimuthal modes m = 1 and m = 0, demonstrate unexpectedly different properties near the electron-cyclotron frequency wce. Though the alternating inductive electric field E produced by the antenna m = 1 is mainly parallel to the external steady magnetic field B0, nevertheless the absorption resonance at the frequency wce accompanied by an increase in the plasma density, takes place. For the m = 0 antenna, where these fields are mutually transverse and where the cyclotron resonance seems certainly must be present, it is absent. But the electron-cyclotron resonance (ECR) appears again provided the B0 field is turned up by the right angle around the same m = 0 antenna. |
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