Supersonic jets of hydrogen and helium for laser wakefield acceleration
Autor: | F Wojda, Kristoffer Svensson, Matthias Burza, Lovisa Senje, Anders Persson, Olle Lundh, Guillaume Genoud, Bastian Aurand, Martin Hansson, Claes-Göran Wahlström |
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Jazyk: | angličtina |
Rok vydání: | 2016 |
Předmět: |
Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous) Hydrogen Achievement of high brightness electron beam with laser plasma accelerators [13.2] chemistry.chemical_element Electron 01 natural sciences 7. Clean energy law.invention law 0103 physical sciences Supersonic speed lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Physics::Atomic Physics 010306 general physics Helium Physics Number density 010308 nuclear & particles physics Surfaces and Interfaces Plasma Laser Accelerators and Storage Rings Novel Acceleration Techniques (ANAC2) [13] chemistry Cathode ray lcsh:QC770-798 Physics::Accelerator Physics Atomic physics |
Zdroj: | Phys. Rev. Accel. Beams, (2016) pp. 051301 Physical Review Accelerators and Beams, Vol 19, Iss 5, p 051301 (2016) Svensson, K, Hansson, M, Wojda, F, Senje, L, Burza, M, Aurand, B, Genoud, G, Persson, A, Wahlström, C G & Lundh, O 2016, ' Supersonic jets of hydrogen and helium for laser wakefield acceleration ', Physical Review: Accelerators and Beams, vol. 19, no. 5, 051301 . https://doi.org/10.1103/PhysRevAccelBeams.19.051301 |
ISSN: | 2469-9888 |
Popis: | The properties of laser wakefield accelerated electrons in supersonic gas flows of hydrogen and helium are investigated. At identical backing pressure, we find that electron beams emerging from helium show large variations in their spectral and spatial distributions, whereas electron beams accelerated in hydrogen plasmas show a higher degree of reproducibility. In an experimental investigation of the relation between neutral gas density and backing pressure, it is found that the resulting number density for helium is ∼30% higher than for hydrogen at the same backing pressure. The observed differences in electron beam properties between the two gases can thus be explained by differences in plasma electron density. This interpretation is verified by repeating the laser wakefield acceleration experiment using similar plasma electron densities for the two gases, which then yielded electron beams with similar properties. |
Databáze: | OpenAIRE |
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