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Cryogenic Deuterium and Deuterium-Tritium Direct–Drive Implosions on Omega

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Laser-Plasma Interactions and Applications

Part of the book series: Scottish Graduate Series ((SGS))

Abstract

The success of ignition target designs in inertial confinement fusion (ICF) experiments critically depends on the ability to maintain the main fuel entropy at a low level while accelerating the shell to ignition-relevant velocities of V imp > 3 ×107 cm/s. The University of Rochester’s Laboratory for Laser Energetics has been implodingcryogenic deuterium and deuterium–tritium targets on the Omega Laser System for over a decade. Fuel entropy is inferred in these experiment by measuring fuel areal density near peak compression. Measured areal densities up to ⟨ρR⟩n ∼ 300 mg/cm2 (larger than 85 % of predicted values) are demonstrated in the cryogenic implosion with V imp approaching 3 ×107 cm/s and peak laser intensities of 8 ×1014 W/cm2. Scaled to the laser energies available at the National Ignition Facility, implosions, hydrodynamically equivalent to theseOmega designs, are predicted to achieve ⟨ρR⟩n > 1. 2 g/cm2, sufficient for ignition demonstration in direct-drive ICF experiments.

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Authors and Affiliations

  1. Laboratory for Laser Energetics, Department of Mechanical Engineering, University of Rochester, Rochester, NY, 14623, USA

    Valeri N. Goncharov

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  1. Valeri N. Goncharov
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Correspondence to Valeri N. Goncharov .

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Editors and Affiliations

  1. , Department of Physics, University of Strathclyde, 107 Rottenrow, Glasgow, G4 0NG, United Kingdom

    Paul McKenna

  2. Science + Technology Facilities Council, Central Laser Facility, Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, United Kingdom

    David Neely

  3. Science + Technology Facilities Council, Central Laser Facility, Rutherford Appleton Laboratory, Oxfordshire, OX11 0QX, United Kingdom

    Robert Bingham

  4. , Department of Physics, University of Strathclyde, 107 Rottenrow, Glasgow, G4 0NG, United Kingdom

    Dino Jaroszynski

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Goncharov, V.N. (2013). Cryogenic Deuterium and Deuterium-Tritium Direct–Drive Implosions on Omega. In: McKenna, P., Neely, D., Bingham, R., Jaroszynski, D. (eds) Laser-Plasma Interactions and Applications. Scottish Graduate Series. Springer, Heidelberg. https://doi.org/10.1007/978-3-319-00038-1_7

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  • DOI: https://doi.org/10.1007/978-3-319-00038-1_7

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