Electric field enhancement at multiple densities in laser-irradiated nanotube plasma

The electric field enhancement inside a nanotube irradiated by intense ultrashort laser pulse (≪1 ps) is calculated. The hollowness of the nanotubes determines the field enhancement and the electron density at which such structures exhibit resonance. The electric field in a nanotube plasma is shown...

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Bibliographic Details
Published in:Pramāṇa 2012-09, Vol.79 (3), p.443-456
Main Authors: CHAKRAVARTY, U, NAIK, P A, GUPTA, P D
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Astroparticles
Observations and Techniques
Physics
Physics and Astronomy
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Summary:The electric field enhancement inside a nanotube irradiated by intense ultrashort laser pulse (≪1 ps) is calculated. The hollowness of the nanotubes determines the field enhancement and the electron density at which such structures exhibit resonance. The electric field in a nanotube plasma is shown to be resonantly enhanced at multiple densities during the two phases of interaction: the ionization phase and the hydrodynamic expansion phase. It is further shown that by a proper choice of hollowness of the nanotubes, a continued occurrence of the resonance over a longer time can be achieved. These properties make nanotubes efficient absorbers of intense ultrashort laser pulses.
ISSN:0304-4289
0973-7111
DOI:10.1007/s12043-012-0340-3