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arXiv · 1903.02869

Feasibility of optical probing of relativistic plasma singularities

Timur Zh. Esirkepov·Jie Mu·Yanjun Gu·Tae Moon Jeong·Petr Valenta·Ondrej Klimo·James K. Koga·Masaki Kando·David Neely·Georg Korn·Sergei V. Bulanov·Alexander S. Pirozhkov
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Abstract

Singularities in multi-stream flows of relativistic plasmas can efficiently produce coherent high-frequency radiation, as exemplified in the concepts of Relativistic Flying Mirror [S. V. Bulanov, et al., Phys. Rev. Lett. 91, 085001 (2003)] and Burst Intensification by Singularity Emitting Radiation (BISER) [Pirozhkov, et al., Scientific Reports 7, 17968 (2017)]. Direct observation of these singularities is challenging due to their extreme sharpness (tens of nanometers), relativistic velocity, and transient non-local nature. We propose to use ultrafast (a few light cycles) optical probe for identifying relativistic plasma singularities. Our Particle-in-Cell (PIC) simulations show that this diagnostic is feasible.

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Timur Zh. Esirkepov, Jie Mu, Yanjun Gu, Tae Moon Jeong, Petr Valenta, Ondrej Klimo, James K. Koga, Masaki Kando, David Neely, Georg Korn, Sergei V. Bulanov, Alexander S. Pirozhkov. 2019-03-07. Feasibility of optical probing of relativistic plasma singularities. https://doi.org/10.1063/5.0004525

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