X-ray scattering measurements of radiative heating and cooling dynamics.

X-ray scattering measurements of radiative heating and cooling dynamics.

Spectrally and time-resolved x-ray scattering is used to extract the temperature and charge state evolution in a near solid density carbon foam driven by a supersonic soft x-ray heat wave. The measurements show a rapid heating of the foam material (approximately 200 eV/ns) followed by a similarly fa...

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Autori principali: Gregori, G, Glenzer, S, Fournier, K, Campbell, K, Dewald, E, Jones, O, Hammer, J, Hansen, S, Wallace, R, Landen, O
Natura: Journal article
Lingua:English
Pubblicazione: 2008
Descrizione
Riassunto:Spectrally and time-resolved x-ray scattering is used to extract the temperature and charge state evolution in a near solid density carbon foam driven by a supersonic soft x-ray heat wave. The measurements show a rapid heating of the foam material (approximately 200 eV/ns) followed by a similarly fast decline in the electron temperature as the foam cools. The results are compared to an analytic power balance model and to results from radiation-hydrodynamics simulations. Finally, the combination of charge state and temperature extracted from this known density isochorically heated plasma is used to distinguish between dense plasma ionization balance models.

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