Geometrical Effects on Non-spherical Extended Systems in Strong Laser Fields

Abstract

This work explores how cluster geometry affects ionization in strong laser fields. Using molecular dynamics simulations, spheroidal argon clusters of equal volume but varying aspect ratios were exposed to near-infrared laser pulses (800–2000 nm). Prolate clusters consistently showed higher ion energies and ionization per atom, especially when the laser polarization aligned with the semi-major axis. A peak in energy absorption at 1400 nm suggests a crossover between dipole-enhanced ionization and plasma resonance effects. These results reveal that target geometry and orientation strongly influence laser-cluster interactions, with potential applications in structural probing and laser-driven control of anisotropic systems.No embargoAcademic Major: Physic