期刊
PHYSICAL REVIEW LETTERS
卷 129, 期 13, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.129.135001
关键词
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资金
- U.S. DOE Office of Science, Fusion Energy Sciences
- Lawrence Livermore National Lab (LLNS)
- DOE/NNSA [DEAC52]
- Natural Sciences and Engineering Research Council of Canada [RGPIN-2021-04373]
- LaserNetUS initiative at Colorado State University [PHY-1753165]
- National Science Foundation [DE-SC-0019076, DE-SC0021246]
- STROBE [DMR-1548924]
- Department of Defense Vannevar Bush Faculty Fellowship ONR [N000142012842]
- U.S. Department of Energy's National Nuclear Security Administration [DE-NA0003525]
- SNL's LDRD program [218456]
- Laboratory Directed Research and Development program of Los Alamos National Laboratory [20180040DR]
- [B643845]
- U.S. Department of Energy (DOE) [DE-SC0021246] Funding Source: U.S. Department of Energy (DOE)
- U.S. Department of Defense (DOD) [N000142012842] Funding Source: U.S. Department of Defense (DOD)
Short-pulse, laser-solid interactions can generate uniformly heated high-density plasmas, which serve as a unique platform for studying high-energy-density matter.
Short-pulse, laser-solid interactions provide a unique platform for studying complex high-energy-density matter. We present the first demonstration of solid-density, micron-scale keV plasmas uniformly heated by a high-contrast, 400 nm wavelength laser at intensities up to 2 x 10(21) W/cm(2). High-resolution spectral analysis of x-ray emission reveals uniform heating up to 3.0 keV over 1 mu m depths. Particle-in-cell simulations indicate the production of a uniformly heated keV plasma to depths of 2 mu m. 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. These conditions enabled the differentiation of atomic physics models of ionization potential depression in high-energy -density environments.
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