Electron gas compression and Coulomb explosion in the surface layer of a conductor heated by femtosecond laser pulse |
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Authors: | S. I. Kudryashov V. I. Emel’yanov |
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Affiliation: | (1) International Laser Center, Faculty of Physics, Moscow State University, Moscow, 119899, Russia |
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Abstract: | The hypothesis is put forward on the basis of experimental data that strong inhomogeneous heating of the skin layer of conducting materials by a femtosecond pulse gives rise to a double electrical layer that is formed of a “surface” layer of positive ions and a thin (about 1 nm) “subsurface” layer of a superdense (1023–1025 cm?3) degenerate electron gas. The double layer breaks within one picosecond through the Coulomb explosion. |
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