Measurement of Super High Velocity of Laser-Driven Planar Target for Impact Fusion Ignition

POSTER

Abstract

A totally new ignition scheme of ICF, called ``Impact Fusion Ignition (IFI),'' has been recently proposed [Nucl. Instrum. Methods A. 67, 544 (2005)], in which a compressed main fuel is ignited by impact collision of a fragment of separately imploded fuel (impactor). A most critical requirement for IFI is to achieve a super high velocity ($>$1000 km/s) of the impactor. One then needs to substantially suppress Rayleigh- Taylor (RT) instability for a stable acceleration of the target. We have observed super high velocity by utilizing such a RT suppression technique as double ablation in high-Z doped targets [S. Fujioka et al., Phys. Rev. Lett. 92, 195001 (2004)]. We will present and discuss the first experimental results on IFI.

Authors

  • Tatsuhiro Sakaiya

  • H. Saito

  • H. Azechi

  • K. Otani

  • T. Shiota

  • D. Ichinose

  • K. Shigemori

  • M. Murakami

  • S. Fujioka

  • M. Nakai

  • H. Shiraga

  • H. Nagatomo

  • A. Sunahara

  • K. Mima

    • Institute of Laser Engineering, Osaka University

  • M. Karasik

  • J. Gardner

  • J. Bates

  • D. Colombant

  • J. Weber

  • S. Obenschain

    • Naval Research Laboratory

  • Y. Aglitskiy

    • Science Application International Corporation