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

S Kylychbekov, H S Song, K B Kwon, O Ra, E S Yoon, M Chung, K Yu, S R Yoffe, B Ersfeld, D A Jaroszynski, M S Hur

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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.

Original languageEnglish
Article number025018
Number of pages10
JournalPlasma Sources Science and Technology
Issue number2
Early online date3 Jan 2020
Publication statusPublished - 14 Feb 2020


  • density scanning
  • plasma diagnostics
  • plasma dipole oscillation
  • plasma dipole radiation
  • point-detect of plasma density
  • radiation emission from plasma

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