Fig. 2
Sketch of the geometry showing parameters used to calculate V th, ne, and L. The chromosphere is shown by the black solid line, with the HXR footpoints shown in blue. The loop midline is shown by the green dashed line. The diameter, D, is shown by the orange line. The length, L, is shown by the purple line and the cross-sectional area, A, is shown by the shaded end.
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