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Table 1 Estimated energy loss (Equation 8) for a photoemitted electron as a function of its velocity

From: Dynamic screening of a localized hole during photoemission from a metal cluster

  N= 20 υ = 1 a.u. υ = 1.5 a.u. υ = 2.5 a.u.
Eloss, a.u. Without hole 0.60 0.44 0.22
  With hole 0.37 0.30 0.16
Δ Eloss , a.u.   0.23 0.14 0.06
  1. The electron is assumed to follow a trajectory with constant velocity. The difference in energy loss Δ Eloss for the case of absence and presence of a hole in the center of the cluster is also given.