Extended X-ray absorption fine structure of dynamically-compressed copper up to 1 terapascal

H. Sio (), A. Krygier, D. G. Braun, R. E. Rudd, S. A. Bonev, F. Coppari, M. Millot, D. E. Fratanduono, N. Bhandarkar, M. Bitter, D. K. Bradley, P. C. Efthimion, J. H. Eggert, L. Gao, K. W. Hill, R. Hood, W. Hsing, N. Izumi, G. Kemp, B. Kozioziemski, O. L. Landen, K. Le Galloudec, T. E. Lockard, A. Mackinnon, J. M. McNaney, N. Ose, H.-S. Park, B. A. Remington, M. B. Schneider, S. Stoupin, D. B. Thorn, S. Vonhof, C. J. Wu and Y. Ping
Additional contact information
H. Sio: Lawrence Livermore National Laboratory
A. Krygier: Lawrence Livermore National Laboratory
D. G. Braun: Lawrence Livermore National Laboratory
R. E. Rudd: Lawrence Livermore National Laboratory
S. A. Bonev: Lawrence Livermore National Laboratory
F. Coppari: Lawrence Livermore National Laboratory
M. Millot: Lawrence Livermore National Laboratory
D. E. Fratanduono: Lawrence Livermore National Laboratory
N. Bhandarkar: Lawrence Livermore National Laboratory
M. Bitter: Princeton University
D. K. Bradley: Lawrence Livermore National Laboratory
P. C. Efthimion: Princeton University
J. H. Eggert: Lawrence Livermore National Laboratory
L. Gao: Princeton University
K. W. Hill: Princeton University
R. Hood: Lawrence Livermore National Laboratory
W. Hsing: Lawrence Livermore National Laboratory
N. Izumi: Lawrence Livermore National Laboratory
G. Kemp: Lawrence Livermore National Laboratory
B. Kozioziemski: Lawrence Livermore National Laboratory
O. L. Landen: Lawrence Livermore National Laboratory
K. Le Galloudec: Lawrence Livermore National Laboratory
T. E. Lockard: Lawrence Livermore National Laboratory
A. Mackinnon: Lawrence Livermore National Laboratory
J. M. McNaney: Lawrence Livermore National Laboratory
N. Ose: Lawrence Livermore National Laboratory
H.-S. Park: Lawrence Livermore National Laboratory
B. A. Remington: Lawrence Livermore National Laboratory
M. B. Schneider: Lawrence Livermore National Laboratory
S. Stoupin: Lawrence Livermore National Laboratory
D. B. Thorn: Lawrence Livermore National Laboratory
S. Vonhof: General Atomics
C. J. Wu: Lawrence Livermore National Laboratory
Y. Ping: Lawrence Livermore National Laboratory

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract Large laser facilities have recently enabled material characterization at the pressures of Earth and Super-Earth cores. However, the temperature of the compressed materials has been largely unknown, or solely relied on models and simulations, due to lack of diagnostics under these challenging conditions. Here, we report on temperature, density, pressure, and local structure of copper determined from extended x-ray absorption fine structure and velocimetry up to 1 Terapascal. These results nearly double the highest pressure at which extended x-ray absorption fine structure has been reported in any material. In this work, the copper temperature is unexpectedly found to be much higher than predicted when adjacent to diamond layer(s), demonstrating the important influence of the sample environment on the thermal state of materials; this effect may introduce additional temperature uncertainties in some previous experiments using diamond and provides new guidance for future experimental design.

Date: 2023
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DOI: 10.1038/s41467-023-42684-7

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