Loss-cone instabilities for compact fusion reactor and field-reversed configuration

Zhongtian WANG (王中天); Huidong LI (李会东); Xueke WU (吴雪科)

doi:10.1088/2058-6272/aaead9

Plasma Science and Technology > 2019 > 21(2): 25101-025101. > DOI: 10.1088/2058-6272/aaead9

Zhongtian WANG (王中天), Huidong LI (李会东), Xueke WU (吴雪科). Loss-cone instabilities for compact fusion reactor and field-reversed configuration[J]. Plasma Science and Technology, 2019, 21(2): 25101-025101. DOI: 10.1088/2058-6272/aaead9

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Loss-cone instabilities for compact fusion reactor and field-reversed configuration

¹ School of Science, Xihua University, Chengdu 610039, People’s Republic of China
² Southwestern Institute of Physics, Chengdu 610041, People’s Republic of China

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Received Date: May 23, 2018

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Abstract

Abstract

Loss-cone instabilities are studied for linear fusion devices. The gyro-kinetic equation for such a configuration is rigorously constructed in terms of action-angle variables by making use of canonical transformation. The dispersion relation, including for the first time, finite bounce frequency is obtained and numerically solved. The loss-cone modes are found near ion-cyclotron frequency. The growth rates are greatly reduced and approaching zero with increasing beta value. The results suggest that loss-cone instabilities are unlikely to be threatening to linear fusion devices since a new longitudinal invariant is found and gives a constraint which helps confinement.
- loss-cone instabilities,
- linear fusion devices,
- gyro-kinetic

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References

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Loss-cone instabilities for compact fusion reactor and field-reversed configuration