학술논문
One-dimensional hydrodynamic simulations of low convergence ratio direct-drive inertial confinement fusion implosions.
Document Type
Academic Journal
Author
Paddock RW; Clarendon Laboratory, University of Oxford, Oxford, UK.; Martin H; University College, University of Oxford, Oxford, UK.; Ruskov RT; University College, University of Oxford, Oxford, UK.; Scott RHH; Central Laser Facility, STFC, Rutherford Appleton Laboratory, Didcot, UK.; Garbett W; AWE plc, Aldermaston, Reading, Berkshire RG7 4PR, UK.; Haines BM; Los Alamos National Laboratory, MS T087, Los Alamos, NM 87545, USA.; Zylstra AB; Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.; Aboushelbaya R; Clarendon Laboratory, University of Oxford, Oxford, UK.; Mayr MW; Clarendon Laboratory, University of Oxford, Oxford, UK.; Spiers BT; Clarendon Laboratory, University of Oxford, Oxford, UK.; Wang RHW; Clarendon Laboratory, University of Oxford, Oxford, UK.; Norreys PA; Clarendon Laboratory, University of Oxford, Oxford, UK.; University College, University of Oxford, Oxford, UK.; Central Laser Facility, STFC, Rutherford Appleton Laboratory, Didcot, UK.
Source
Publisher: The Royal Society Country of Publication: England NLM ID: 101133385 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1471-2962 (Electronic) Linking ISSN: 1364503X NLM ISO Abbreviation: Philos Trans A Math Phys Eng Sci Subsets: PubMed not MEDLINE; MEDLINE
Subject
Language
English
Abstract
Indirect drive inertial confinement fusion experiments with convergence ratios below 17 have been previously shown to be less susceptible to Rayleigh-Taylor hydrodynamic instabilities, making this regime highly interesting for fusion science. Additional limitations imposed on the implosion velocity, in-flight aspect ratio and applied laser power aim to further reduce instability growth, resulting in a new regime where performance can be well represented by one-dimensional (1D) hydrodynamic simulations. A simulation campaign was performed using the 1D radiation-hydrodynamics code HYADES to investigate the performance that could be achieved using direct-drive implosions of liquid layer capsules, over a range of relevant energies. Results include potential gains of 0.19 on LMJ-scale systems and 0.75 on NIF-scale systems, and a reactor-level gain of 54 for an 8.5 MJ implosion. While the use of 1D simulations limits the accuracy of these results, they indicate a sufficiently high level of performance to warrant further investigations and verification of this new low-instability regime. This potentially suggests an attractive new approach to fusion energy. This article is part of a discussion meeting issue 'Prospects for high gain inertial fusion energy (part 2)'.