Journal
PHYSICS OF PLASMAS
Volume 12, Issue 6, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.1896375
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Absolute reflectivity and self-emission diagnostics are used to determine the gray-body equivalent temperature of laser-shocked iron partially releasing into a lithium fluoride window. Pressure and reflectivity are measured simultaneously by means of velocity interferometer system for any reflector interferometers. In the temperature-pressure plane, a temperature plateau in the release is observed which is attributed to iron's melting line. Extrapolation of data leads to a melting temperature at Earth's inner-outer core boundary of 7800 +/- 1200 K, in good agreement with previous works based on dynamic compression. Shock temperatures were calculated and found to be in the liquid phase. (C) 2005 American Institute of Physics.
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