Bulletin of the American Physical Society
60th Annual Meeting of the APS Division of Plasma Physics
Volume 63, Number 11
Monday–Friday, November 5–9, 2018; Portland, Oregon
Session NP11: Poster Session V: Laser-plasma Particle Acceleration; HEDP; Turbulence and Transport; DIII-D Tokamak; Machine Learning, Data Science (9:30am-12:30pm)
Wednesday, November 7, 2018
OCC Room: Exhibit Hall A1&A
Abstract ID: BAPS.2018.DPP.NP11.6
Abstract: NP11.00006 : Sub-Optical-Cycle Dynamics of Electron Nano-Bunches in Relativistic Laser-Plasma Interactions: Insights From Numerical Simulations*
Nicholas M Fasano
Nicholas M Fasano
Matthew R Edwards
The reflection of relativistically-intense few-cycle laser pulses from solid targets offers an efficient route toward the production of isolated attosecond pulses. A combination of theory and particle-in-cell (PIC) simulations has previously suggested that the origin of this radiation is the sub-cycle acceleration of high-density, nanometer-scale electron bunches (nanobunches). During this acceleration, the electrons follow synchrotron-like trajectories, emitting harmonics of the laser fundamental in the reflection and transmission directions. The formation and structure of the electron nanobunches are closely related to the emitted radiation. Here, multidimensional PIC simulations taking into account transverse laser forces are run and the results compared with those obtained from 1D PIC. On the short time scales considered here, we show that these nanobunches also form in 2D PIC simulations with similar structure to those found in 1D.
*This work was supported by NSF Grant No. PHY 1506372 and DOE grant No. DE-SC0017907.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DPP.NP11.6
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