Differential heating: A versatile method for thermal conductivity measurements in high-energy-density matter

We propose a method for thermal conductivity measurements of high energy density matter based on differential heating. A temperature gradient is created either by surface heating of one material or at an interface between two materials by different energy deposition. The subsequent heat conduction a...

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Bibliographic Details
Published in:Physics of plasmas 2015-09, Vol.22 (9)
Main Authors: Ping, Y., Fernandez-Panella, A., Sio, H., Correa, A., Shepherd, R., Landen, O., London, R. A., Sterne, P. A., Whitley, H. D., Fratanduono, D., Boehly, T. R., Collins, G. W.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Conduction heating
Conductive heat transfer
Conductivity
Differential thermal analysis
Flux density
gold
Heat conductivity
Laser beam heating
laser heating
Physics - Plasma physics
Plasma physics
protons
Temperature gradients
thermal conduction
Thermal conductivity
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Summary:We propose a method for thermal conductivity measurements of high energy density matter based on differential heating. A temperature gradient is created either by surface heating of one material or at an interface between two materials by different energy deposition. The subsequent heat conduction across the temperature gradient is observed by various time-resolved probing techniques. Conceptual designs of such measurements using laser heating, proton heating, and x-ray heating are presented. The sensitivity of the measurements to thermal conductivity is confirmed by simulations.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4929797