Fig. 3

Upper panel: variation of the CR pitch angle α as function of the polar angle θ for values of αICM between 0° and 90° in steps of 5° (from bottom to top); the dashed line represents the critical pitch angle αcr = 20.5°. Lower panel: relation between the maximum initial pitch angle αICM,max and the polar angle that can be reached during the propagation inside the core.
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