Homogeneous, Micron-Scale High-Energy-Density Matter Generated by Relativistic Laser-Solid Interactions

Short-pulse, laser-solid interactions provide a unique platform for studying complex high-energy-density mat ter. We present the first demonstration of solid density, micron-scale keV plasmas uniformly heated by a high contrast, 400 nm laser at intensities up to 2×1021 W/cm2. High-resolution spectra...

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Veröffentlicht in:Physical review letters 2022-09, Vol.129 (13), p.135001-135001, Article 135001
Hauptverfasser: Beier, N. F., Allison, H., Efthimion, P., Flippo, K. A., Gao, L., Hansen, S. B., Hill, K., Hollinger, R., Logantha, M., Musthafa, Y., Nedbailo, R., Senthilkumaran, V., Shepherd, R., Shlyaptsev, V. N., Song, H., Wang, S., Dollar, F., Rocca, J. J., Hussein, A. E.
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container_end_page 135001
container_issue 13
container_start_page 135001
container_title Physical review letters
container_volume 129
creator Beier, N. F.
Allison, H.
Efthimion, P.
Flippo, K. A.
Gao, L.
Hansen, S. B.
Hill, K.
Hollinger, R.
Logantha, M.
Musthafa, Y.
Nedbailo, R.
Senthilkumaran, V.
Shepherd, R.
Shlyaptsev, V. N.
Song, H.
Wang, S.
Dollar, F.
Rocca, J. J.
Hussein, A. E.
description Short-pulse, laser-solid interactions provide a unique platform for studying complex high-energy-density mat ter. We present the first demonstration of solid density, micron-scale keV plasmas uniformly heated by a high contrast, 400 nm laser at intensities up to 2×1021 W/cm2. High-resolution spectral analysis of X-ray emission reveals uniform heating up to 3.0 keV over 1 µm depths. Particle-in-cell simulations indicate the production of a uniformly heated keV plasma to depths of 2 µm. The significant bulk heating and presence of highly-ionized ions deep within the target are attributed to the few MeV hot electrons that become trapped and undergo refluxing within the target sheath fields. In conclusion, these conditions enable the differentiation of atomic physics models such as ionization potential depression in high energy density environments.
doi_str_mv 10.1103/PhysRevLett.129.135001
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subjects 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ATOMIC AND MOLECULAR PHYSICS
title Homogeneous, Micron-Scale High-Energy-Density Matter Generated by Relativistic Laser-Solid Interactions
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