期刊
PHYSICAL REVIEW LETTERS
卷 112, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.112.145004
关键词
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资金
- Lawrence Livermore National Laboratory (LLNL) [DE-AC52-07NA27344]
- Laboratory Directed Research and Development (LDRD) [11-ER-050]
- DOE Office of Science, Fusion Energy Sciences under FWP [100182]
- DOE Office of Basic Energy Sciences, Materials Sciences and Engineering Division [DE-AC02-76SF00515]
- National Laser User Facility (NLUF) [DE-FG52-07 NA28057, DE-DE-FG52-09 NA29035]
- UK EPSRC [EP/G007187/1]
- U.S. Department of Energy
- Division of Fusion Energy Sciences
- National Nuclear Security Administration [DE-SC0008580]
- EPSRC [EP/G007187/1, EP/D062837/1, EP/I028994/1] Funding Source: UKRI
- U.S. Department of Energy (DOE) [DE-SC0008580] Funding Source: U.S. Department of Energy (DOE)
- Engineering and Physical Sciences Research Council [EP/D062837/1, EP/I028994/1, EP/G007187/1] Funding Source: researchfish
Detailed measurements of the electron densities, temperatures, and ionization states of compressed CH shells approaching pressures of 50 Mbar are achieved with spectrally resolved x-ray scattering. Laser-produced 9 keV x-rays probe the plasma during the transient state of three-shock coalescence. High signal-to-noise x-ray scattering spectra show direct evidence of continuum depression in highly degenerate warm dense matter states with electron densities n(e) > 10(24) cm(-3). The measured densities and temperatures agree well with radiation-hydrodynamic modeling when accounting for continuum lowering in calculations that employ detailed configuration accounting.
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