Fig. 3
Diagram to illustrate the set-up of our simulations. The large circle represents the planet, at apl. The real belt, at late times, is shown by the thick line between rbelt,in = apl,out + δachaos to 
. To simulate this belt we need only consider test particles that start between 
and amax = apl,out + 2δachaos, represented by the dotted, thick line.
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