Damping rates η_mix of mixed modes obtained from a JWKB analysis using the global seismic parameters of model 1 and assuming an intermediate coupling between the two g-mode cavities (q₁ = 10⁻²). The symbols are the same as in Fig. 8. The horizontal dash-dotted line indicates the damping rates of p modes inferred from seismic observations of typical clump stars (see text). The threshold η_lim = 2/T_obs below which modes are unresolved is represented by the horizontal dashed line (we assumed a duration of T_obs = 4 yr, corresponding to the longest datasets of Kepler).