Measurement of the dynamic response of compressed hydrogen by inelastic X-ray scattering

Measurement of the dynamic response of compressed hydrogen by inelastic X-ray scattering

Measurement of the dynamic properties of hydrogen and helium under extreme pressures is a key to understanding the physics of planetary interiors. The inelastic scattering signal from statically compressed hydrogen inside diamond anvil cells at 2.8 GPa and 6.4 GPa was measured at the Diamond Light S...

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Veröffentlicht in:Journal of physics. Conference series 2010-08, Vol.244 (4), p.042014
Hauptverfasser: Falk, K, Jephcoat, A P, Crowley, B J B, Fäustlin, R R, Fortmann, C, Khattak, F Y, Kleppe, A K, Riley, D, Toleikis, S, Wark, J, Wilhelm, H, Gregori, G
Format: Artikel
Sprache:eng
Schlagworte:
Diamond anvil cells
Dynamic response
Hydrogen
Inelastic scattering
Light sources
Physics
Planetary interiors
Plasmas (physics)
Synchrotrons
X-ray scattering
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Beschreibung
Zusammenfassung:Measurement of the dynamic properties of hydrogen and helium under extreme pressures is a key to understanding the physics of planetary interiors. The inelastic scattering signal from statically compressed hydrogen inside diamond anvil cells at 2.8 GPa and 6.4 GPa was measured at the Diamond Light Source synchrotron facility in the UK. The first direct measurement of the local field correction to the Coulomb interactions in degenerate plasmas was obtained from spectral shifts in the scattering data and compared to predictions by the Utsumi-Ichimaru theory for degenerate electron liquids.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/244/4/042014