Dynamic interactions of fast ions with carbon nanotubes

Nuclear Instruments & Methods In Physics Research Section B-Beam Interactions With Materials And Atoms 230, 142 - 147 (2005)

Dynamic interactions of fast ions with carbon nanotubes

D.J. Mowbray, Sangwoo Chung, Z.L. Mišković, F.O. Goodman, You-Nian Wang

We used the hydrodynamic model to describe the dielectric response of a multi-walled carbon nanotube to a fast point charge moving paraxially, either inside or outside the nanotube. Calculations are performed for a two-walled nanotube, giving rise to a splitting of the plasmon frequencies due to the interaction between the electron fluids on the two cylinders. The dependences of the projectile stopping power and the self-energy (image potential) on the velocity and the distance from the nanotube axis show interesting features when the projectile velocity matches the phase velocity of the plasmon mode with a quasi-linear dispersion.

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