Spectral Control via Multi-Species Effects in PW-Class Laser-Ion Acceleration
| Autor: | Marco Garten, Karl Zeil, Ulrich Schramm, Tim Ziegler, Axel Huebl, René Widera, Martin Rehwald, Thomas E. Cowan, Lieselotte Obst-Huebl, Thomas Kluge, Michael Bussmann |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Accelerator Physics (physics.acc-ph)
Spectral power distribution Ab initio FOS: Physical sciences laser-ion acceleration 7. Clean energy 01 natural sciences 010305 fluids & plasmas Ion Acceleration cryogenic target multi-species Ionization 0103 physical sciences particle-in-cell 010306 general physics Particle beam Physics TNSA Computational Physics (physics.comp-ph) Condensed Matter Physics Charged particle Physics - Plasma Physics Computational physics Plasma Physics (physics.plasm-ph) LPA Nuclear Energy and Engineering Physics - Accelerator Physics Realization (systems) Physics - Computational Physics |
| Zdroj: | Plasma Physics and Controlled Fusion 62(2020)12, 124003 Laser-Plasma Accelerator Workshop 2019, 06.-10.05.2019, Split, Kroatien Plasma Physics and Controlled Fusion |
| ISSN: | 1367-2630 1352-2426 0741-3335 1742-6596 |
| Popis: | Laser-ion acceleration with ultra-short pulse, PW-class lasers is dominated by non-thermal, intra-pulse plasma dynamics. The presence of multiple ion species or multiple charge states in targets leads to characteristic modulations and even mono-energetic features, depending on the choice of target material. As spectral signatures of generated ion beams are frequently used to characterize underlying acceleration mechanisms, thermal, multi-fluid descriptions require a revision for predictive capabilities and control in next-generation particle beam sources. We present an analytical model with explicit inter-species interactions, supported by extensive ab initio simulations. This enables us to derive important ensemble properties from the spectral distribution resulting from those multi-species effects for arbitrary mixtures. We further propose a potential experimental implementation with a novel cryogenic target, delivering jets with variable mixtures of hydrogen and deuterium. Free from contaminants and without strong influence of hardly controllable processes such as ionization dynamics, this would allow a systematic realization of our predictions for the multi-species effect. Comment: 4 pages plus appendix, 11 figures, paper submitted to a journal of the American Physical Society |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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