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Mass dependency of high-wavenumber turbulence in a linear partially magnetized plasma
We investigated the mass dependency of the high-wavenumber turbulence, which occurs at scales smaller than the ion effective Larmor radius, in a partially magnetized plasma column. In this system, two different types of fluctuations were observed: one exhibiting a coherent discrete spectrum, while t...
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Published in: | Physics of plasmas 2024-04, Vol.31 (4) |
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container_title | Physics of plasmas |
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creator | Kawachi, Yuichi Sasaki, Makoto Nishizawa, Takashi Kosuga, Yusuke Terasaka, Kenichiro Inagaki, Shigeru Yamada, Takuma Kasuya, Naohiro Moon, Chanho Nagashima, Yoshihiko Fujisawa, Akihide |
description | We investigated the mass dependency of the high-wavenumber turbulence, which occurs at scales smaller than the ion effective Larmor radius, in a partially magnetized plasma column. In this system, two different types of fluctuations were observed: one exhibiting a coherent discrete spectrum, while the other displaying a broadband continuous spectrum. The phase velocities of both types showed a similar mass dependency, approximately matching the ion sound velocity or electron diamagnetic drift velocity. Additionally, we found that the discrete spectrum has a peak interval frequency comparable to the ion cyclotron frequency, which is consistent with ion cyclotron ranges of fluctuations, including ion Bernstein waves. |
doi_str_mv | 10.1063/5.0187997 |
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subjects | Acoustic velocity Bernstein waves Broadband Cyclotron frequency Cyclotrons Diamagnetism Larmor radius Turbulence Wavelengths |
title | Mass dependency of high-wavenumber turbulence in a linear partially magnetized plasma |
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