Enhanced x-ray emission arising from laser-plasma confinement by a strong transverse magnetic field
Abstract
We analyze, using experiments and 3D MHD numerical simulations, the dynamics and radiative properties of a plasma ablated by a laser (1 ns, 10-10 W/cm) from a solid target, as it expands into a homogeneous, strong magnetic field (up to 30 T) transverse to its main expansion axis. We find that as soon as 2 ns after the start of the expansion, the plasma becomes constrained by the magnetic field. As the magnetic field strength is increased, more plasma is confined close to the target and is heated by magnetic compression. We also observe a dense slab that rapidly expands into vacuum after ~ 8 ns; however, this slab contains only ~ 2 % of the total plasma. As a result of the higher density and increased heating of the confined plasma, there is a net enhancement of the total x-ray emissivity induced by the magnetization.
Keywords
Cite
@article{arxiv.2006.12424,
title = {Enhanced x-ray emission arising from laser-plasma confinement by a strong transverse magnetic field},
author = {E. D. Filippov and S. S. Makarov and K. F. Burdonov and W. Yao and G. Revet and J. Béard and S. Bolaños and S. N. Chen and A. Guediche and J. Hare and D. Romanovsky and I. Yu. Skobelev and M. Starodubtsev and A. Ciardi and S. A. Pikuz and J. Fuchs},
journal= {arXiv preprint arXiv:2006.12424},
year = {2020}
}
Comments
15 pages, 4 figures, Supplementary Information, submitted to PRL