Fig. 8
Unitless quantity h derived from the magnetic helicity (see text for the definition) as a function of the aspect ratio R0/r0 for toroidal flux ropes with the Tsuji (solid line), Miller & Turner (dashed line), and modified Miller & Turner (dotted line) solutions. The horizontal dashed-dotted line shows an asymptotic value to which all solutions tend for large aspect ratios.
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