We present a novel laser based ion acceleration scheme, where a petawatt circularly polarized laser pulse is shot on an ultra-thin (nano-scale) double-layer target. Our scheme allows the production of high-quality light ion beams with both energy and angular dispersion controllable by the target properties. We show that extraction of all electrons from the target by radiation pressure can lead to a very effective two step acceleration process for light ions if the target is designed correctly. Relativistic protons should be obtainable with pulse powers of a few petawatt. Careful analytical modeling yields estimates for characteristic beam parameters and requirements on the laser pulse quality, in excellent agreement with one and two-dimensional Particle-in Cell simulations.
Bright, directional electron emission from nanowire coated targets under petawatt, femtosecond irradiation
Tata Institute of Fundamental Research（塔塔基础研究所）；Extreme Light Infrastructure - Nuclear Physics (ELI-NP)（极轻基础设施-核物理（ELI-NP））；“Horia Hulubei” National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH)（“霍里亚·胡卢贝伊”国家物理与核工程研发研究所（IFIN-HH））；National University of Science and Technology POLITEHNICA Bucharest（布加勒斯特理工大学国立科技大学）；University of Osaka（大阪大学）
Nano-scale ultra-dense Z-pinches formation from laser-irradiated nanowire arrays
我们表明，超密集的Z-箍缩与纳米尺度可以通过照射对齐的纳米线与相对论强度的飞秒激光脉冲产生。使用完全三维的相对论粒子在细胞模拟，我们证明了激光脉冲驱动的前向电子电流在周围的电线的区域。该正向电流通过导线感应出每$μ$ m \textsuperscript{2} 0.1千兆安培的返回电流密度。由此产生的强的、准静态的、自生的方位角磁场将纳米线捏成热等离子体，其峰值电子密度为$> 9\cdot 10^{24}$ cm \textsuperscript{-3}，超过临界密度的1000倍。这些新的超密度纳米针阵列有望导致有效的微聚变和其他应用。
Tens of MeV, collimated, bright fluxes of protons from ordered nano-structured targets in ultra-relativistic laser-matter interaction
Tata Institute of Fundamental Research（塔塔基础研究所）；Extreme Light Infrastructure - Nuclear Physics (ELI-NP)（极光大基础设施-核物理（ELI-NP））；“Horia Hulubei” National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH)（“霍里亚·胡卢贝伊”核物理与核工程研发国家研究所（IFIN-HH））；National University of Science and Technology POLITEHNICA Bucharest（布加勒斯特理工大学国家科学与技术大学）；University of Osaka（大阪大学）；National Institute for Laser, Plasma and Radiation Physics（激光、等离子体与辐射物理国家研究所）
Burst Intensification by Singularity Emitting Radiation in Laser Plasma
National Institutes for Quantum Science and Technology (QST)（国立量子科学和技术研究院）；Kansai Institute for Photon Science (KPSI)（关西光子科学研究院）；Osaka University（大阪大学）；Institute for Open and Transdisciplinary Research Initiatives（开放与跨学科研究倡议研究所）；Kyoto International University Academy（京都国际大学学院）；Rokkasho Institute for Fusion Energy（六所核聚变能源研究所）；Hiroshima University（广岛大学）；Graduate School of Advanced Science and Engineering（先进理工学研究科）；Extreme Light Infrastructure ERIC（超强光基础设施欧洲研究基础设施合作组织）；ELI Beamlines Facility（ELI光束线设施）
