Ion acceleration by an ultrashort laser pulse interacting with a near-critical-density gas jet
Plasma Physics
2020-12-18 v1
Abstract
We demonstrate laser-driven Helium ion acceleration with cut-off energies above 25 MeV and peaked ion number above /MeV for 22(2) MeV projectiles from near-critical density gas jet targets. We employed shock gas jet nozzles at the high-repetition-rate (HRR) VEGA-2 laser system with 3 J in pulses of 30 fs focused down to intensities in the range between W/cm and W/cm. We demonstrate acceleration spectra with minor shot-to-shot changes for small variations in the target gas density profile. Difference in gas profiles arise due to nozzles being exposed to a experimental environment, partially ablating and melting.
Keywords
Cite
@article{arxiv.2012.09455,
title = {Ion acceleration by an ultrashort laser pulse interacting with a near-critical-density gas jet},
author = {M. Ehret and C. Salgado-Lopez and V. Ospina-Bohorquez and J. A. Perez-Hernandez and M. Huault and M. de Marco and J. I. Apinaniz and F. Hannachi and D. De Luis and J. Hernandez Toro and D. Arana and C. Mendez and O. Varela and A. Debayle and L. Gremillet and T. -H. Nguyen-Bui and E. Olivier and G. Revet and N. D. Bukharskii and H. Larreur and J. Caron and C. Vlachos and T. Ceccotti and D. Raffestin and P. Nicolai and J. L. Feugeas and M. Roth and X. Vaisseau and G. Gatti and L. Volpe and J. J. Santos},
journal= {arXiv preprint arXiv:2012.09455},
year = {2020}
}
Comments
22 pages, 28 figures