High-energy-density plasma in femtosecond-laser-irradiated nanowire-array targets for nuclear reactions

0566042 - FZÚ 2023 RIV IN eng J - Journal Article
Kong, D. - Zhang, G. - Shou, Y. - Xu, S. - Mei, Z. - Cao, Z. - Pan, Z. - Wang, P. - Qi, G. - Lou, Y. - Ma, Z. - Lan, H. - Wang, W. - Li, Y. - Rubovič, Peter - Veselský, M. - Bonasera, A. - Zhao, J. - Geng, Y. - Zhao, Y. - Fu, C. - Luo, W. - Ma, Y. - Yan, X. - Ma, W.
High-energy-density plasma in femtosecond-laser-irradiated nanowire-array targets for nuclear reactions.
Matter and Radiation at Extremes. Roč. 7, č. 6 (2022), č. článku 064403. ISSN 2468-2047. E-ISSN 2468-080X
Institutional support: RVO:68378271
Keywords : high-energy density laser-plasma interaction * nuclear reactions * nano-targets
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 5.1, year: 2022
Method of publishing: Open access

In this work, the high-energy-density plasmas (HEDP) evolved from joule-class-femtosecond-laser-irradiated nanowire-array (NWA) targets were numerically and experimentally studied. The results of particle-in-cell simulations indicate that ions accelerated in the sheath field around the surfaces of the nanowires are eventually confined in a plasma, contributing most to the high energy densities. The protons emitted from the front surfaces of the NWA targets provide rich information about the interactions that occur. We give the electron and ion energy densities for broad target parameter ranges. The ion energy densities from NWA targets were found to be an order of magnitude higher than those from planar targets, and the volume of the HEDP was several-fold greater. At optimal target parameters, 8% of the laser energy can be converted to confined protons, and this results in ion energy densities at the GJ/cm3 level.
Permanent Link: https://hdl.handle.net/11104/0337514