A numerical study on plasma acceleration processes with ion dynamics at the sub-nanosecond timescale
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866912873573253120 |
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| author | Parise, G. Cianchi, A. Galletti, M. Guglietta, F. Pompili, R. Rossi, A. R. Sbragaglia, M. Simeoni, D. |
| author_facet | Parise, G. Cianchi, A. Galletti, M. Guglietta, F. Pompili, R. Rossi, A. R. Sbragaglia, M. Simeoni, D. |
| contents | Plasma wakefield acceleration is a groundbreaking technique for accelerating particles, capable of sustaining gigavolt-per-meter accelerating fields. Understanding the physical mechanisms governing the recovery of plasma accelerating properties over time is essential for successfully achieving high-repetition-rate plasma acceleration, a key requirement for applicability in both research and commercial settings. In this paper, we present numerical simulations of the early-stage plasma evolution based on the parameters of the SPARC_LAB hydrogen plasma recovery time experiment (Pompili et al., Comm. Phys. 7, 241 (2024)), employing spatially resolved Particle-in-Cell and fluid models. The experiment reports on a non-monotonic dependence of the plasma recovery time on the initial plasma density, an effect for which ion motion has been invoked as a contributing factor. The simulations presented here provide further insight into the role of ion dynamics in shaping this behavior. Furthermore, comparing Particle-in-Cell and fluid approaches allows us to assess the quality of fluid models for describing this class of plasma dynamics. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2602_03754 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A numerical study on plasma acceleration processes with ion dynamics at the sub-nanosecond timescale Parise, G. Cianchi, A. Galletti, M. Guglietta, F. Pompili, R. Rossi, A. R. Sbragaglia, M. Simeoni, D. Plasma Physics Accelerator Physics Plasma wakefield acceleration is a groundbreaking technique for accelerating particles, capable of sustaining gigavolt-per-meter accelerating fields. Understanding the physical mechanisms governing the recovery of plasma accelerating properties over time is essential for successfully achieving high-repetition-rate plasma acceleration, a key requirement for applicability in both research and commercial settings. In this paper, we present numerical simulations of the early-stage plasma evolution based on the parameters of the SPARC_LAB hydrogen plasma recovery time experiment (Pompili et al., Comm. Phys. 7, 241 (2024)), employing spatially resolved Particle-in-Cell and fluid models. The experiment reports on a non-monotonic dependence of the plasma recovery time on the initial plasma density, an effect for which ion motion has been invoked as a contributing factor. The simulations presented here provide further insight into the role of ion dynamics in shaping this behavior. Furthermore, comparing Particle-in-Cell and fluid approaches allows us to assess the quality of fluid models for describing this class of plasma dynamics. |
| title | A numerical study on plasma acceleration processes with ion dynamics at the sub-nanosecond timescale |
| topic | Plasma Physics Accelerator Physics |
| url | https://arxiv.org/abs/2602.03754 |