Radiation emission from plasma oscillation

Hur, M. S. and Song, H. S. and Kwon, K. B. and Kang, T. and Ersfeld, B. and Noble, A. and Jaroszynski, D. A. (2019) Radiation emission from plasma oscillation. Proceedings of SPIE, 11036. ISSN 0277-786X (https://doi.org/10.1117/12.2520749)

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Abstract

It is well known that an infinite homogeneous Langmuir wave, formed by accelerating charged particles, it does not emit electromagnetic radiation because of its electrostatic nature, which is represented by the zero curl of the electric field. To realise emission, the plasma density must be tailored such that the Langmuir wave takes on a non-zero component of the curl of the electric field. The mechanisms of inverse mode conversion or travelling wave antennae leads to emission of radiation. In these mechanisms, the emphasis is on energy conversion of the Langmuir ‘wave’ to an electromagnetic wave. However, an interesting way to cause the plasma wave to emit radiation is to isolate a single ‘oscillator’ composed of a localized plasma block, i.e., a plasma dipole. An outstanding question in the realization of this idea is how to isolate the plasma oscillation from the Langmuir wave. To answer this question, we propose a novel idea of colliding detuned counter-propagating laser pulses in plasma. Simulation results show that radiation is emitted from the isolated plasma dipole.

  • Item type:Article
    ID code:68281
    Dates:
    Date
    Event
    24 April 2019
    Published
    24 April 2019
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:06 Jun 2019 13:36
    Last modified:09 Apr 2024 00:44
    URI:https://strathprints.strath.ac.uk/id/eprint/68281
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