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K: Fachverband Kurzzeit- und angewandte Laserphysik
K 2: Poster
K 2.15: Poster
Tuesday, March 15, 2022, 16:30–18:30, P
Laser-driven proton acceleration based on expanded thin target — •Mingyuan Shi1,2, Peter Hilz1, Israa Salaheldin1,2, Bin Liu1, Bifeng Lei1,2, Alexander Saevert1,2, Georg Schaefer1,2, and Matt Zepf1,2 — 1Helmholtz-Institute Jena, Jena, Germany — 2Friedrich-Schiller-Universität Jena, Jena, Germany
With the development of ultra-fast and ultra-short laser technology, the interaction between femtosecond laser and matter has aroused people's great attention. Regarding to laser-ion acceleration, the ions are accelerated to relativistic velocity within a few optical cycles is still a challenge due to technical limitations and cost to date. But laser-based proton and ion acceleration has already demonstrated outstanding potential in beam divergency, acceleration gradient and beam duration[1,2].
In principle the near critical density plasma can deposit more laser energy[3], therefore increasing the energy of accelerated particle. But a controllable plasma density to solid target experiment is still a challenge up to date. Here we try to produce a controllable plasma near critical density and based on it to investigate the plasma density effect to ion acceleration. In particular we aim to diagnose the evolution of plasma maximum density after pre-pulse shooting. Investigating the optimum plasma density to the proton acceleration. At the same time the back reflection light will be collected bring rich information.
[1] Hegelich, et al. Nature 439.7075 (2006): 441-444. [2] Gaillard, et al. Physics of Plasmas 18.5 (2011): 056710. [3] Sharma, et al. Scientific reports 9.1 (2019): 1-10.