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Efficient generation and transportation of energetic electrons in a carbon nanotube array target

Source: Appl. Phys. Lett. 96, 041504 (2010); doi:10.1063/1.3298016

Published 28 January 2010

KEYWORDS and PACS
Keywords
PACS
  • 79.70.+q
    Field emission, ionization, evaporation, and desorption
  • 79.20.Ds
    Laser-beam surface impact phenomena
  • YEAR: 2010
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PUBLICATION DATA
ISSN:
1553-9601 (online)
Publisher:
AIP is a member of CrossRef AIP
Yanling Ji,1,2 Gang Jiang,1 Weidong Wu,2 Chaoyang Wang,2 Yuqiu Gu,2 and Yongjian Tang2
1College of Physical Science and Technology, Sichuan University, Chengdu 610064, People's Republic of China
2Research Center of Laser Fusion, China Academy of Engineering Physics, P.O. Box 919-987, Mianyang 621900, People's Republic of China
Laser-driven energetic electron propagation in a carbon nanotube-array target is investigated using two-dimensional particle-in-cell simulations. Energetic electrons are efficiently generated when the array is irradiated by a short intense laser pulse. Confined and guided transportation of energetic electrons in the array is achieved by exploiting strong transient electromagnetic fields created at the wall surfaces of nanotubes. The underlying mechanisms are discussed in detail. Our investigation shows that the laser energy can be transferred more effectively to the target electrons in the array than that of in the flat foil due to the hole structures in the array. ©2010 American Institute of Physics
History: Received 19 October 2009; accepted 21 December 2009; published 28 January 2010
Permalink: http://link.aip.org/link/?APPLAB/96/041504/1

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