TY  - JOUR
AU  - Martín-Luna, P.
AU  - Bonatto, A.
AU  - Bontoiu, C.
AU  - Xia, G.
AU  - Resta-Lopez, J.
PY  - 2023
DA  - 2023//
TI  - Excitation of wakefields in carbon nanotubes: a hydrodynamic model approach
T2  - New J. Phys.
JO  - New Journal of Physics
SP  - 123029
EP  - 12pp
VL  - 25
IS  - 12
PB  - IOP Publishing Ltd
KW  - carbon nanotube
KW  - wakefield
KW  - electron gas
KW  - plasmons
AB  - The interactions of charged particles with carbon nanotubes (CNTs) may excite electromagnetic modes in the electron gas produced in the cylindrical graphene shell constituting the nanotube wall. This wake effect has recently been proposed as a potential novel method of short-wavelength high-gradient particle acceleration. In this work, the excitation of these wakefields is studied by means of the linearized hydrodynamic model. In this model, the electronic excitations on the nanotube surface are described treating the electron gas as a 2D plasma with additional contributions to the fluid momentum equation from specific solid-state properties of the gas. General expressions are derived for the excited longitudinal and transverse wakefields. Numerical results are obtained for a charged particle moving within a CNT, paraxially to its axis, showing how the wakefield is affected by parameters such as the particle velocity and its radial position, the nanotube radius, and a friction factor, which can be used as a phenomenological parameter to describe effects from the ionic lattice. Assuming a particle driver propagating on axis at a given velocity, optimal parameters were obtained to maximize the longitudinal wakefield amplitude.
SN  - 1367-2630
UR  - https://arxiv.org/abs/2308.08399
UR  - https://doi.org/10.1088/1367-2630/ad127c
DO  - 10.1088/1367-2630/ad127c
LA  - English
N1  - WOS:001126333400001
ID  - Martin-Luna_etal2023
ER  -