Suprathermal electrons from the anti-Stokes Langmuir decay instability cascade.

Autor: Feng QS; Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom., Aboushelbaya R; Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom., von der Leyen MW; Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom., Spiers BT; Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom., Paddock RW; Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom., Ouatu I; Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom., Timmis R; Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom., Wang RHW; Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom., Cao LH; Institute of Applied Physics and Computational Mathematics, Beijing 100094, China.; HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100871, China., Liu ZJ; Institute of Applied Physics and Computational Mathematics, Beijing 100094, China.; HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100871, China., Zheng CY; Institute of Applied Physics and Computational Mathematics, Beijing 100094, China.; HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100871, China., He XT; Institute of Applied Physics and Computational Mathematics, Beijing 100094, China.; HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100871, China., Norreys PA; Department of Physics, Atomic and Laser Physics sub-Department, University of Oxford, Clarendon Laboratory, Oxford OX1 3PU, United Kingdom.; John Adams Institute, Denys Wilkinson Building, Oxford OX1 3RH, United Kingdom.
Jazyk: angličtina
Zdroj: Physical review. E [Phys Rev E] 2022 Apr; Vol. 105 (4-2), pp. 045208.
DOI: 10.1103/PhysRevE.105.045208
Abstrakt: The study of parametric instabilities has played a crucial role in understanding energy transfer to plasma and, with that, the development of key applications such as inertial confinement fusion. When the densities are between 0.11n_{c}≲n_{e}≲0.14n_{c} and the electron temperature is in inertial confinement fusion-relevant temperatures, anomalous hot electrons with kinetic energies above 100keV are generated. Here a new electron acceleration mechanism-the anti-Stokes Langmuir decay instability cascade of forward stimulated Raman scattering-is investigated. This mechanism potentially explains anomalous energetic electron generation in indirectly driven inertial confinement fusion experiments, it also provides a new way of accelerating electrons to higher energy for applications such as novel x-ray sources.
Databáze: MEDLINE