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Title: Efficient energy absorption of intense ps-laser pulse into nanowire target

Abstract

The interaction between ultra-intense laser light and vertically aligned carbon nanotubes is investigated to demonstrate efficient laser-energy absorption in the ps laser-pulse regime. Results indicate a clear enhancement of the energy conversion from laser to energetic electrons and a simultaneously small plasma expansion on the surface of the target. A two-dimensional plasma particle calculation exhibits a high absorption through laser propagation deep into the nanotube array, even for a dense array whose structure is much smaller than the laser wavelength. The propagation leads to the radial expansion of plasma perpendicular to the nanotubes rather than to the front side. These features may contribute to fast ignition in inertial confinement fusion and laser particle acceleration, both of which require high current and small surface plasma simultaneously.

Authors:
; ; ;  [1];  [2];  [3]
  1. Graduate School of Engineering, Osaka University, 2-1 Suita, Osaka 565-0871 (Japan)
  2. National Institute for Fusion Science, Toki, Gifu 509-5292 (Japan)
  3. Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Nagatsuda 4259, Midori-ku, Yokohama 226-8503, Kanagawa (Japan)
Publication Date:
OSTI Identifier:
22600133
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; CARBON NANOTUBES; ENERGY ABSORPTION; ENERGY CONVERSION; INERTIAL CONFINEMENT; LASERS; NANOWIRES; PARTICLES; PLASMA; PLASMA EXPANSION; PULSES; SURFACES; TAIL ELECTRONS; THERMONUCLEAR IGNITION; TWO-DIMENSIONAL CALCULATIONS; WAVELENGTHS

Citation Formats

Habara, H., Honda, S., Katayama, M., Tanaka, K. A., Sakagami, H., and Nagai, K. Efficient energy absorption of intense ps-laser pulse into nanowire target. United States: N. p., 2016. Web. doi:10.1063/1.4953092.
Habara, H., Honda, S., Katayama, M., Tanaka, K. A., Sakagami, H., & Nagai, K. Efficient energy absorption of intense ps-laser pulse into nanowire target. United States. doi:10.1063/1.4953092.
Habara, H., Honda, S., Katayama, M., Tanaka, K. A., Sakagami, H., and Nagai, K. 2016. "Efficient energy absorption of intense ps-laser pulse into nanowire target". United States. doi:10.1063/1.4953092.
@article{osti_22600133,
title = {Efficient energy absorption of intense ps-laser pulse into nanowire target},
author = {Habara, H. and Honda, S. and Katayama, M. and Tanaka, K. A. and Sakagami, H. and Nagai, K.},
abstractNote = {The interaction between ultra-intense laser light and vertically aligned carbon nanotubes is investigated to demonstrate efficient laser-energy absorption in the ps laser-pulse regime. Results indicate a clear enhancement of the energy conversion from laser to energetic electrons and a simultaneously small plasma expansion on the surface of the target. A two-dimensional plasma particle calculation exhibits a high absorption through laser propagation deep into the nanotube array, even for a dense array whose structure is much smaller than the laser wavelength. The propagation leads to the radial expansion of plasma perpendicular to the nanotubes rather than to the front side. These features may contribute to fast ignition in inertial confinement fusion and laser particle acceleration, both of which require high current and small surface plasma simultaneously.},
doi = {10.1063/1.4953092},
journal = {Physics of Plasmas},
number = 6,
volume = 23,
place = {United States},
year = 2016,
month = 6
}
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