Generalized Boozer coordinates: A natural coordinate system for quasisymmetry
Generalized Boozer coordinates: A natural coordinate system for quasisymmetry
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DOI：
10.1063/5.0060115
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发表时间：
2021-09-01
影响因子：
2.2
通讯作者：
Bhattacharjee, A.
中科院分区：
文献类型：
--
作者：
Rodriguez, E.;Sengupta, W.;Bhattacharjee, A.
我们证明了一个直场直线坐标系的存在性，我们称之为广义布泽尔坐标系。该坐标系适用于具有嵌套环面磁通面的磁场，条件是闭合积分dl/B (j center dot del psi) = 0，其中的符号有其通常的含义，积分沿闭合磁场线取。所有准对称场，不论其相关的平衡形式如何，都必须满足这个条件。该坐标系是描述一般准对称构形及其性质的方便形式。可以解析地了解准对称的强弱形式和轴对称的区别，以及准对称与不同平衡形式的相互作用。由AIP出版社独家授权出版。https://doi.org/10.1063/5.0060115
We prove the existence of a straight-field-line coordinate system we call generalized Boozer coordinates. This coordinate system exists for magnetic fields with nested toroidal flux surfaces provided closed integral dl/B (j center dot del psi) = 0, where symbols have their usual meaning, and the integral is taken along closed magnetic field lines. All quasisymmetric fields, regardless of their associated form of equilibria, must satisfy this condition. This coordinate system presents itself as a convenient form to describe general quasisymmetric configurations and their properties. Insight can be gained analytically into the difference between strong and weak forms of quasisymmetry, as well as axisymmetry, and the interaction of quasisymmetry with different forms of equilibria.Published under an exclusive license by AIP Publishing. https://doi.org/10.1063/5.0060115