[CALA Ultra-Intense Seminar] Liquid target for present and future laser ion accelerators

durch Prof. Enam Chowdhury (Ohio State University)

Freitag 29.01.2021, 15:00 → 17:00 Europe/Berlin

Ultra-intense laser plasma interaction creates extreme field gradients, which can be used for developing next generation compact particle accelerator schemes. Various schemes have already been demonstrated for GeV electron acceleration via Laser Wake Field Acceleration (LWFA) with guided channel gas cells of various forms, which can be rep-rated. However, ion acceleration from an ultra-intense laser plasma interaction requires the super-intense laser focus interacting with a solid density target positioned with micron precision, and achieving this in high repetition rate faces many challenges. Recent liquid target work by several groups1,2 show promise in this front, and kHz ion acceleration at > 2.5 MeV has already been demonstrated3. I will discuss various challenges of rep-rating the ion acceleration process and how liquid targets may be an ideal solution for next gen laser based ion accelerators.

References:

1. K. M. George et al., “High-repetition-rate (≥ kHz) targets and optics from liquid microjets for high-intensity laser-plasma interactions,” High Power Laser Sci. Eng., vol. 7, 2019, p. 1,.

2. M. Gauthier et al., “High repetition rate , multi-MeV proton source from cryogenic hydrogen jets,” Appl. Phys. Lett., vol. 111, no. September, 2017, p. 114102,

3. J. T. Morrison et al., “MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction,” New J. Phys. Vol 20, February 2018, p. 1.

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