Journal
PHYSICAL REVIEW LETTERS
Volume 109, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.065002
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Funding
- UK EPSRC [EP/F020449/1, EP/H035877/1]
- US DOE [DE-AC03-76SF00098]
- German Ministry for Education and Research (BMBF) [FSP 301]
- Volkswagen Foundation
- SSAA [DE-FG52-06NA26212]
- [P208/10/2302]
- [P205/11/0571]
- [P108/11/1312]
- [ME10046]
- [IAAX00100903]
- EPSRC [EP/F020449/1, EP/H035877/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F020449/1, EP/H035877/1] Funding Source: researchfish
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We have used the Linac Coherent Light Source to generate solid-density aluminum plasmas at temperatures of up to 180 eV. By varying the photon energy of the x rays that both create and probe the plasma, and observing the K-alpha fluorescence, we can directly measure the position of the K edge of the highly charged ions within the system. The results are found to disagree with the predictions of the extensively used Stewart-Pyatt model, but are consistent with the earlier model of Ecker and Kroll, which predicts significantly greater depression of the ionization potential.
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