Study of the hydrodynamics of plasmas produced by laser irradiation of thin foil targets
Luca Ferrario; Dimitri Batani; Luca Ferrario; Dipartimento di Fisica `G Occhialini', Universitàdegli Studi di Milano - Bicocca and INFM, Via Emanueli, 20126 Milano, Italy; Dimitri Batani; Dipartimento di Fisica `G Occhialini', Universitàdegli Studi di Milano - Bicocca and INFM, Via Emanueli, 20126 Milano, Italy
Журнал:
Plasma Physics and Controlled Fusion
Дата:
1999-06-01
Аннотация:
The one-dimensional hydrodynamic expansion of plasmas produced by laser beams focused on thin foil targets is studied by using a self-similar approach. This work is an extension of the London and Rosen model proposed in the context of x-ray laser studies. Here, cases with non-flat-top laser pulses are considered and, for some of these, an exact analytic solution is deduced. The model is useful to study long scale length plasmas, produced by uniform laser irradiation, which become fully underdense during the laser pulse. It predicts the fundamental plasma variables (scale lengths, density, temperature) as a function of the experimental parameters (laser intensity, wavelength and pulse duration, target thickness and composition).
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