How Produce a Plasma Jet Using a Single and Low Energy Laser Beam
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- Nicolaï, P., Tikhonchuk, V.T., Kasperczuk, A. et al. Astrophys Space Sci (2007) 307: 87. doi:10.1007/s10509-006-9222-9
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Under suitable conditions on laser intensity, focal spot radius and atomic number a radiative jet was launched from a planar target. This jet was produced using a relatively low energy laser pulse, below 500 J and it presents similarities with astrophysical protostellar jets. It lasts more than 10 ns, extends over several millimeters, has velocity more than 500 km/s, the Mach number more than 10 and the density above 1018 cm−3. The mechanism of jet formation was inferred from the dimensional analysis and hydrodynamic two-dimensional simulations. It is related to the radiative cooling while the magnetic fields play a minor role.