1. Plasma density measurement by means of self-modulation of long electron bunches
- Author
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Gregor Loisch, Yves Renier, Quantang Zhao, G. Asova, Holger Huck, James Good, Davit Kalantaryan, David Melkumyan, Prach Boonpornprasert, O. Lishilin, Houjun Qian, Ye Lining Chen, Frank Stephan, Anne Oppelt, Mikhail Krasilnikov, and Matthias Gross
- Subjects
Physics ,Electron density ,Resolution (electron density) ,Electron ,Condensed Matter Physics ,Plasma acceleration ,Instability ,Nuclear Energy and Engineering ,Physics::Plasma Physics ,Modulation ,ddc:620 ,Atomic physics ,Lepton ,Plasma density - Abstract
Plasma physics and controlled fusion 61(4), 045012 (2019). doi:10.1088/1361-6587/ab04b9, We present a new method to determine the electron density of a plasma by measuring the periodicity of modulations introduced to the longitudinal phase space of a relativistic particle bunch by the interaction with the plasma via the self-modulation instability. As the modulation is solely depending on the plasma density and the beam parameters, this method allows to determine the time-resolved density of a plasma at the position of beam passage, which is confirmed in particle-in-cell simulations. Densities in the range of 3.6 × 10$^{12}$ cm$^{−3}$ – 7.2 × 10$^{15}$ cm$^{−3}$ have been measured and the measurement accuracy is confirmed by comparison to spectroscopic plasma density measurements., Published by IOP Publ., Bristol
- Published
- 2019
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