{
  "s_min": 28.0,
  "s_max": 75.0,
  "R_0": 30,
  "alpha": 0.9,
  "beta": 0.2,
  "eta_0": 0.03,
  "r_f": 6.0,
  "eta_solid": 0.75,
  "R_edge": 15.0,
  "p": 2.5,
  "kappa": 0.8
}