{
  "s_min": 28.0,
  "s_max": 75.0,
  "R_0": 75,
  "alpha": 1.3,
  "beta": 0.4,
  "eta_0": 0.08,
  "r_f": 6.0,
  "eta_solid": 0.7,
  "R_edge": 20.0,
  "p": 2.0,
  "kappa": 1.0
}