Direct laser acceleration of electrons assisted by strong laser-driven azimuthal plasma magnetic fields.
| Autor: | Gong Z; SKLNPT, KLHEDP and CAPT, School of Physics, Peking University, Beijing 100871, China.; Center for High Energy Density Science, The University of Texas at Austin, Austin, Texas 78712, USA., Mackenroth F; Max Planck Institute for the Physics of Complex Systems, 01187 Dresden, Germany.; Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, California 92093, USA., Wang T; Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, California 92093, USA., Yan XQ; SKLNPT, KLHEDP and CAPT, School of Physics, Peking University, Beijing 100871, China., Toncian T; Institute for Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf e.V., 01328 Dresden, Germany., Arefiev AV; Department of Mechanical and Aerospace Engineering, University of California San Diego, La Jolla, California 92093, USA. |
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| Jazyk: | angličtina |
| Zdroj: | Physical review. E [Phys Rev E] 2020 Jul; Vol. 102 (1-1), pp. 013206. |
| DOI: | 10.1103/PhysRevE.102.013206 |
| Abstrakt: | A high-intensity laser beam propagating through a dense plasma drives a strong current that robustly sustains a strong quasistatic azimuthal magnetic field. The laser field efficiently accelerates electrons in such a field that confines the transverse motion and deflects the electrons in the forward direction. Its advantage is a threshold rather than resonant behavior, accelerating electrons to high energies for sufficiently strong laser-driven currents. We study the electron dynamics via a test-electron model, specifically deriving the corresponding critical current density. We confirm the model's predictions by numerical simulations, indicating energy gains two orders of magnitude higher than achievable without the magnetic field. |
| Databáze: | MEDLINE |
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