Numerical implementation Brownian movement 2 Calculations 2 Double ionization 2 Electromagnetic interactions 2 First Born approximation 2 Helium 2 High-energy electron 2 Hyperspherical coordinates 2 Impact ionization 2 Nanotubes 2 Optical properties 2 Plasmon hybridization 2 Plasmonics 2 Plasmons 2 Projectile target interaction 2 Quasistatic approximations 2 Shells (structures) 2 Silver 2 Single-differential cross sections 2 Torque 2 Transition amplitudes 2 Two Dimensional (2 D) 2 Yarn 2 electromagnetic interaction 2 forces 2 inhomogeneous shells 2 nanotubes 2 plasmonics 2 torques 2