超短激光脉冲与近临界密度气体喷流相互作用下的离子加速
等离子体物理
2020-12-18 v1
摘要
我们展示了激光驱动的氦离子加速，其截止能量高于 25 MeV，且在 22(2) MeV 弹丸处峰值离子数高于 /MeV，靶为近临界密度气体喷流。我们在高重复率(HRR) VEGA-2 激光系统上采用冲击气体喷嘴，脉冲能量 3 J、脉宽 30 fs，聚焦强度介于 W/cm 与 W/cm 之间。我们展示了在靶气体密度剖面微小变化下具有较小逐发变化的加速能谱。气体剖面的差异源于喷嘴暴露于实验环境，发生部分烧蚀与熔化。
引用
@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}
}
备注
22 pages, 28 figures