Reconstruction of plasma density profiles by measuring spectra of radiation emitted from oscillating plasma dipoles

Kylychbekov, S and Song, H S and Kwon, K B and Ra, O and Yoon, E S and Chung, M and Yu, K and Yoffe, S R and Ersfeld, B and Jaroszynski, D A and Hur, M S (2020) Reconstruction of plasma density profiles by measuring spectra of radiation emitted from oscillating plasma dipoles. Plasma Sources Science and Technology, 29 (2). 025018. ISSN 0963-0252

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    Abstract

    We suggest a new method for characterising non-uniform density distributions of plasma by measuring the spectra of radiation emitted from a localised plasma dipole oscillator excited by colliding electromagnetic pulses. The density distribution can be determined by scanning the collision point in space. Two-dimensional particle-in-cell simulations demonstrate the reconstruction of linear and nonlinear density profiles corresponding to laser-produced plasma. The method can be applied to a wide range of plasma, including fusion and low temperature plasmas. It overcomes many of the disadvantages of existing methods that only yield average densities along the path of probe pulses, such as interferometry and spectroscopy.

    ORCID iDs

    Kylychbekov, S, Song, H S, Kwon, K B, Ra, O, Yoon, E S, Chung, M, Yu, K, Yoffe, S R ORCID logoORCID: https://orcid.org/0000-0002-6723-4990, Ersfeld, B ORCID logoORCID: https://orcid.org/0000-0001-5597-9429, Jaroszynski, D A ORCID logoORCID: https://orcid.org/0000-0002-3006-5492 and Hur, M S;