Plasmon tsunamis on metallic nanoclusters.

Area of Science:

• Atomic and Molecular Physics
• Plasmonics
• Surface Science

Background:

• Electron capture by highly charged ions is a fundamental process.
• Interactions between ions and metallic nanostructures can lead to unique phenomena.
• Surface plasmons play a crucial role in energy transfer at the nanoscale.

Purpose of the Study:

• To model inelastic scattering events during electron capture by highly charged ions near metallic nanospheres.
• To analyze the contribution of multipolar surface plasmons to ion kinetic energy gain.
• To extend previous theoretical treatments of ion-molecule charge exchange systems.

Main Methods:

• Development of a theoretical model for inelastic scattering and electron capture.
• Analysis of energy transfer from the Fermi level to ion Rydberg states.
• Simulation of surface plasmon excitation and kinetic energy gain spectra.

Main Results:

• A tsunami-like energy transfer phenomenon is described, leading to periodic oscillations in the ion kinetic energy gain spectrum.
• Individual multipolar surface plasmons are shown to contribute significantly to the oscillatory gain spectrum.
• Simulations for Ar(15+) ions interacting with Al and Na nanoclusters exhibit characteristic oscillations.

Conclusions:

• The developed model accurately describes the complex interplay between electron capture, surface plasmon excitation, and ion kinetic energy gain.
• The tsunami-like phenomenon provides a new perspective on ion-nanoparticle interactions.
• The findings have implications for understanding charge exchange processes in nanoscale systems.