Figure 13. Comparison between the mean energy transfer to the surface calculated from the
molecules that do not perform any rebounds on the surface (⟨ET ⟩1 ) and the energy transfer pre-
dicted by the modified Baule model. Data are reported for the functionals considered (in red, green,
and black, for PBE, RPBE and vdW-DF2, respectively) for Θi =0◦ (solid lines), Θi =60◦ (dotted
lines) and for the modified Baule model (dashed lines). The standard Baule model is reported as
a thick blue line. PBE and RPBE data are taken from Ref.15 .