In this work, the FALCON code is adopted for illustrating the features of shear Alfvén and sound continuous spectra in toroidal fusion plasmas. The FALCON codes employ the local Floquet analysis discussed in (Phys. Plasmas, vol. 26, issue 8, 2019, 082502) for computing global structures of continuous spectra in general toroidal geometry. As particular applications, reference equilibria for the divertor tokamak test and ASDEX Upgrade plasmas are considered. In particular, we illustrate the importance of mode polarization for recognizing the physical relevance of the various branches of the continuous spectra in the ideal magnetohydrodynamics limit. We also analyse the effect of plasma compression and the validity of the slow sound approximation.

中文翻译：

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环形等离子体中剪切 Alfvén 的极化和连续声波谱

在这项工作中，鹘代码用于说明环形聚变等离子体中剪切Alfvén和声音连续光谱的特征。这鹘代码采用在 (物理。等离子, 卷。26, issue 8, 2019, 082502) 用于计算一般环形几何中连续光谱的全局结构。作为特定应用，考虑偏滤器托卡马克测试和 ASDEX 升级等离子体的参考平衡。特别是，我们说明了模式极化对于识别理想磁流体动力学极限中连续光谱的各个分支的物理相关性的重要性。我们还分析了等离子体压缩的效果和慢声近似的有效性。