Relative variation of B/C ratio (with respect to a reference taken at L = 5 kpc), as a function of rigidity. Thin- to thick-dashed lines correspond to calculations for various L using either (i) the “theoretical” rescaling which enforce the same level of production for stable secondary species (grey lines), or (ii) the rescaling based on a refit of B/C data for each L as described in the text (red lines).
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