Enhanced energy coupling by using structured nano-wire targets

Habara, H. and Mishima, Y. and Nakanii, N. and Honda, S. and Katayama, M. and Gremillet, L. and Willingale, L. and Maksimchuk, A. and Krushelnick, K. and Tanaka, K. A. (2013) Enhanced energy coupling by using structured nano-wire targets. In: IFSA 2011 - SEVENTH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS :. EPJ Web of Conferences . E D P SCIENCES, FRA.

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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.

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23 May 2016 10:28
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23 Jul 2024 00:00