Suprathermal electrons from the anti-Stokes Langmuir decay instability cascade

Journal article

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.

Authors: Feng, QS; Aboushelbaya, R; von der Leyen, MW; Spiers, BT; Paddock, RW

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: American Physical Society
• Journal: Physical Review E
• Volume: 105
• Issue: 4
• Article number: 045208
• Publication date: 2022-04-27
• Acceptance date: 2022-04-07
• DOI: 10.1103/physreve.105.045208
• EISSN: 2470-0053
• ISSN: 2470-0045
• Pmid: 35590581
• Language: English
• Keywords: FFR