Interpretation of ion cyclotron emission in the HL-2A tokamak

We report the first interpretation of ion cyclotron emission (ICE) based on the frequency variation in HL-2A tokamak experiments. The measured frequencies of ICE are concentrated around the ion cyclotron frequency, while simultaneously exhibiting a linear scaling with the Alfvén velocity. A fully ki...

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Bibliographic Details
Published in:Nuclear Fusion
Main Authors: Linzi Liu, Ruihai Tong, Haozhe Kong, Huasheng Xie, Huiling Wei, Guoliang Xiao, Zengchen Yang, Yonggao Li, Yang Chen, Min Jiang, Guangzhou Hao, Ji Xiaoquan, Li Bo, Li Jiquan, Zhongbin Shi, Min Xu, Wulyu Zhong, HL-2A team
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Subjects:
ion cyclotron emission
energetic particles
tokamak
Online Access:https://doi.org/10.1088/1741-4326/adbd53
Description
Summary:We report the first interpretation of ion cyclotron emission (ICE) based on the frequency variation in HL-2A tokamak experiments. The measured frequencies of ICE are concentrated around the ion cyclotron frequency, while simultaneously exhibiting a linear scaling with the Alfvén velocity. A fully kinetic simulation demonstrates that with low fast ion concentration, ICE frequency approaches the fast Alfvén wave dispersion relation. The dispersion relation of ICE is similar to the dispersion relation of ‘equatorial noise’ in the inner magnetosphere, providing new opportunities for comparing physical model interdisciplinarity.
ISSN:0029-5515

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