Fj. Perezperez et al., RESONANT EFFECTS IN THE STOPPING POWER OF CLUSTERS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 115(1-4), 1996, pp. 18-22
The stopping power of large (H-2)(n)-clusters in silicon is analyzed a
s a function of the cluster size and the cluster velocity. A dielectri
c formalism is used to describe the electronic interaction between the
projectile and the target. The intramolecular and intermolecular inte
rference effects in the cluster energy loss are evaluated as a functio
n of the cluster velocity. For high velocities and large clusters the
intermolecular collective effects dominate in the cluster stopping pow
er. For each cluster velocity we find a resonant cluster size for whic
h the intermolecular stopping power clearly shows a maximum and it sat
urates to a constant value for larger clusters. The radius of this res
onant cluster and the maximum stopping power are proportional to the c
luster velocity.