Phys. Rev. Lett. 73, 2055–2058 (1994)Measurements of Radial Heat Wave Propagation in Laser-Produced Exploding-Foil PlasmasReceived 31 August 1992; published in the issue dated 10 October 1994 Time-resolved, 2D images of x-ray emission from thin, laser-irradiated titanium foils are presented. The foils are irradiated with 0.35 μm light at intensities of 1 × 1015 W/cm2 which produces a plasma with electron densities ≤ 1022 cm-3 and electron temperature of 3-4 keV. X-ray emission that is characteristic of the thermal heat front is observed to propagate radially outward from the heated region. Comparison of these measurements with 2D hydrodynamic simulations of the experiment suggests the radial heat flux to be about 3% of the free-streaming heat flux. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.73.2055
DOI:
10.1103/PhysRevLett.73.2055
PACS:
52.50.Jm, 52.25.Fi, 52.25.Nr
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