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Cao SH, Patel D, Lees A, Stoeckl C, Rosenberg MJ, Gopalaswamy V, Wen H, Huang H, Shvydky A, Betti R, Ren C. Predicting hot electron generation in inertial confinement fusion with particle-in-cell simulations. Phys Rev E 2022; 106:055214. [PMID: 36559357 DOI: 10.1103/physreve.106.055214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 11/14/2022] [Indexed: 11/30/2022]
Abstract
A series of two-dimensional particle-in-cell simulations with speckled laser drivers was carried out to study hot electron generation in direct-drive inertial confinement fusion on OMEGA. Scaling laws were obtained for hot electron fraction and temperature as functions of laser/plasma conditions in the quarter-critical region. Using these scalings and conditions from hydro simulations, the temporal history of hot electron generation can be predicted. The scalings can be further improved to predict hard x-rays for a collection of OMEGA warm target implosions within experimental error bars. These scalings can be readily implemented into inertial confinement fusion design codes.
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Affiliation(s)
- S H Cao
- Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627, USA.,Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA
| | - D Patel
- Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627, USA.,Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA
| | - A Lees
- Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627, USA
| | - C Stoeckl
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA
| | - M J Rosenberg
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA
| | - V Gopalaswamy
- Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627, USA.,Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA
| | - H Wen
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA
| | - H Huang
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA
| | - A Shvydky
- Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA
| | - R Betti
- Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627, USA.,Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA.,Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA
| | - C Ren
- Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627, USA.,Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA.,Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627, USA
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