A. Schinner et al., PLASMON DAMPING AND PROTON STOPPING IN JELLIUM, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 93(2), 1994, pp. 181-185
Two-pair excitations in a homogeneous electron gas are investigated wi
thin screened second order perturbation theory. Based on a suggestion
by Ichimaru [K. Utsumi and S. Ichimaru, Phys. Rev. B 22 (1980) 5203] a
n additional method of obtaining the effective interelectron interacti
on is presented. A closer inspection of the basic equation, rewritten
as a self-consistency problem, justifies the use of static screening w
ithin this model. Fit formulae for all main results are made available
. Finally, an application of these calculations to the problem of prot
on stopping in aluminium is presented, which is in good agreement with
the experiment.