https://doi.org/10.1051/epjconf/20135917007
Enhanced energy coupling by using structured nano-wire targets
1 Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, Japan
2 CEA, DAM, DIF, 91297 Arpajon, France
3 Center for Ultrafast Optical Science, Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, Michigan 48109-2099, USA
a e-mail: habara@eei.eng.osaka-u.ac.jp
b Current institution: Univ. Hyogo, Japan
Published online: 15 November 2013
We have investigated the interaction of ultra intense laser light with a carbon nanotube (CNT) target. The experimental results show an increased electron acceleration and a very low laser reflection as compared to non-structured targets. In addition, interferograms show very weak plasma expansion in front of the CNT target whereas the flat target creates a considerable amount of preformed plasma. A 2-D PIC calculation indicates that high laser absorption is possible via a Brunel mechanism following the ponderomotive heating in the expanded plasma between nanotubes.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
