High-density carbon ablator ignition path with low-density gas-filled rugby hohlraum

Amendt, Peter; Ho, Darwin D.; Jones, Ogden S.

doi:10.1063/1.4918951

Title: High-density carbon ablator ignition path with low-density gas-filled rugby hohlraum

Journal Article · Tue Apr 21 00:00:00 EDT 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4918951· OSTI ID:1872289

Amendt, Peter ^[1]; Ho, Darwin D. ^[1]; Jones, Ogden S. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

A recent low gas-fill density (0.6 mg/cc ⁴He) cylindrical hohlraum experiment on the National Ignition Facility has shown high laser-coupling efficiency (>96%), reduced phenomenological laser drive corrections, and improved high-density carbon capsule implosion symmetry [Jones et al., Bull. Am. Phys. Soc. 59(15), 66 (2014)]. In this Letter, an ignition design using a large rugby-shaped hohlraum [Amendt et al., Phys. Plasmas 21, 112703 (2014)] for high energetics efficiency and symmetry control with the same low gas-fill density (0.6 mg/cc ⁴He) is developed as a potentially robust platform for demonstrating thermonuclear burn. The companion high-density carbon capsule for this hohlraum design is driven by an adiabat-shaped [Betti et al., Phys. Plasmas 9, 2277 (2002)] 4-shock drive profile for robust high gain (>10) 1-D ignition performance and large margin to 2-D perturbation growth.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1872289

Alternate ID(s):: OSTI ID: 1228600

Report Number(s):: LLNL-JRNL-664016; 782540; TRN: US2306860

Journal Information:: Physics of Plasmas, Vol. 22, Issue 4; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 11 works

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References (23)

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The relationship between gas fill density and hohlraum drive performance at the National Ignition Facility Hall, G. N.; Jones, O. S.; Strozzi, D. J. Physics of Plasmas, Vol. 24, Issue 5 https://doi.org/10.1063/1.4983142	journal	May 2017
Performance of beryllium targets with full-scale capsules in low-fill 6.72-mm hohlraums on the National Ignition Facility Simakov, A. N.; Wilson, D. C.; Yi, S. A. Physics of Plasmas, Vol. 24, Issue 5 https://doi.org/10.1063/1.4983141	journal	May 2017
Ultra-high (>30%) coupling efficiency designs for demonstrating central hot-spot ignition on the National Ignition Facility using a Frustraum Amendt, Peter; Ho, Darwin; Ping, Yuan Physics of Plasmas, Vol. 26, Issue 8 https://doi.org/10.1063/1.5099934	journal	August 2019
Hybrid particle-in-cell simulations of laser-driven plasma interpenetration, heating, and entrainment Higginson, D. P.; Amendt, P.; Meezan, N. Physics of Plasmas, Vol. 26, Issue 11 https://doi.org/10.1063/1.5110512	journal	November 2019
Preliminary study on a tetrahedral hohlraum with four half-cylindrical cavities for indirectly driven inertial confinement fusion Jing, Longfei; Jiang, Shaoen; Kuang, Longyu Nuclear Fusion, Vol. 57, Issue 4 https://doi.org/10.1088/1741-4326/aa5b43	journal	March 2017

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