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Table 1

Nominal set-up for the narrow-ring and extended-disc runs.

PARENT-BODY RUN
   Number of test particles NPB = 2 × 105
   Initial radial extent 30 < r < 130 AU (wide-disc)
    45 < r < 53 AU (narrow-disc)
   Initial eccentricity 0 ≤ e ≤ 0.01
   Initial surface density Σ ∝ r-1
PERTURBING PLANET
   mp/m μ = 2 × 10-3
   Eccentricity ep = 0
   Semi-major axis AU
COLLISIONAL RUNS
   Average optical depth
   Number of test particles Nnum = 2 × 105
   Size rangea scut ≤ s ≤ 40scut
   Size distribution at t = 0b dn(s) ∝ s-3.5ds

Notes. Parameters denoted by an * are explored as free parameters.

(a)

scut is the radiation pressure blow-out size.

(b)

When released from the parent-body population.

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