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Martin-Luna, P.; Bonatto, A.; Bontoiu, C.; Xia, G.; Resta-Lopez, J. |
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Title |
Plasmonic excitations in double-walled carbon nanotubes |
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Journal Article |
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Year |
2024 |
Publication |
Results in Physics |
Abbreviated Journal |
Results Phys. |
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Volume |
60 |
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Pages |
107698 - 11pp |
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Abstract |
The interactions of charged particles moving paraxially in multi-walled carbon nanotubes (MWCNTs) may excite electromagnetic modes. 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 wakefields in double-walled carbon nanotubes (DWCNTs) is studied by means of the linearized hydrodynamic theory. General expressions have been derived for the excited longitudinal and transverse wakefields and related to the resonant wavenumbers which can be obtained from the dispersion relation. In the absence of friction, the stopping power of the wakefield driver, modelled here as a charged macroparticle, can be written solely as a function of these resonant wavenumbers. The dependencies of the wakefields on the radii of the DWCNT and the driving velocity have been studied. DWCNTs with inter-wall distances much smaller than the internal radius may be a potential option to obtain higher wakefields for particle acceleration compared to single-walled carbon nanotubes (SWCNTs). |
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2211-3797 |
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no |
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yes |
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yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6584 |
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Author |
Martín-Luna, P.; Bonatto, A.; Bontoiu, C.; Xia, G.; Resta-Lopez, J. |
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Title |
Excitation of wakefields in carbon nanotubes: a hydrodynamic model approach |
Type |
Journal Article |
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Year |
2023 |
Publication |
New Journal of Physics |
Abbreviated Journal |
New J. Phys. |
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Volume |
25 |
Issue |
12 |
Pages |
123029 - 12pp |
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Keywords |
carbon nanotube; wakefield; electron gas; plasmons |
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Abstract |
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. |
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[Martin-Luna, P.] Univ Valencia, Consejo Super Invest Cient, Inst Fis Corpuscular IFIC, Paterna 46980, Spain, Email: pablo.martin@uv.es |
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IOP Publishing Ltd |
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English |
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1367-2630 |
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WOS:001126333400001 |
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no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5855 |
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Author |
Martin-Luna, P.; Bonatto, A.; Bontoiu, C.; Lei, B.F.; Xia, G.X.; Resta-Lopez, J. |
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Title |
Wakefield excitation and stopping power in multi-walled carbon nanotubes: one- and two-fluid model |
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Journal Article |
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Year |
2025 |
Publication |
Journal of Physics D |
Abbreviated Journal |
J. Phys. D |
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58 |
Issue |
22 |
Pages |
225203 - 15pp |
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Keywords |
multi-walled carbon nanotubes; wakefield; hydrodynamic model; plasmons |
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Abstract |
The motion of charged particles along multi-walled carbon nanotubes (MWCNTs) can induce electromagnetic modes. This wake effect represents an innovative approach for short-wavelength, high-gradient particle acceleration and for producing brilliant radiation sources. This article examines the excitation of wakefields produced by a point-like charge moving parallel to MWCNTs using the linearized hydrodynamic theory. General expressions for the excited longitudinal and transverse wakefields and the stopping power have been derived, relating them to the resonant wavenumbers obtainable from the dispersion relations under the assumption of negligible friction. As the number of walls in MWCNTs increases, they exhibit a richer spectrum of plasmonic excitations, which has been widely studied as a function of the driver velocity in this manuscript. This comprehensive study provides a deeper understanding of the physical phenomena behind plasmonic excitations in MWCNTs, paving the way for potential applications in particle acceleration, nanotechnology, and materials science. |
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Address |
[Martin-Luna, Pablo] Univ Valencia, Consejo Super Invest Cient, Inst Fis Corpuscular IFIC, Paterna 46980, Spain, Email: pablo.martin@uv.es; |
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Publisher |
IOP Publishing Ltd |
Place of Publication |
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Editor |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0022-3727 |
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Notes |
WOS:001489435600001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6654 |
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