Effect of powerful laser pulse on low Z solid material

Twenty-two years of laser-matter work at Centre d'Etudes de Limeil-Valenton (CEL-V)

“…These fusion reactions, which were produced at 1.06 jum and also at 0.53 /urn [8], gave evidence of a hot plasma temperature greater than 500 eV. The main features of the interaction process were described by the 'radiative deflagration' model [9][10][11] as follows: The incoming radiation is absorbed within an interaction layer in which the electron density is below the cut-off value; heat propagates by electron thermal conduction which, after hydrodynamic separation, drives a low-temperature shock. Both deflagration and shock propagate inwards, while underdense plasma flows outwards.…”

Nonlinear Electron Heat Conduction Equation and Self-Similar Method for 1-D Thermal Waves in the Laser Heating of Solid Density DT Fuel

“…The interaction of an intense laser beam with a plane solid target has been considered by a number of authors [8][9][10]. In the last decades, the dominant role of heat conduction in the early stages of laser interaction with solid targets has been widely appreciated [11][12][13][14][15][16][17]. The mechanisms for heat transport in high temperature laser produced plasmas have been a topic of extensive research.…”

Two-dimensional hydrodynamic models of laser-produced plasmas

“…The self-regulating model of Afanasev et al (1966) and Caruso, Bertotti & Giupponi (1966) has been progressively developed by Nemchinov (1967), Caruso & Gratton (1968), Puell (1970) and Pert (19866) to give an accurate representation when inverse bremsstrahlung absorption is dominant and thermal conduction negligible. On the other hand, the deflagration model of Fauquignon & Floux (1970), formalized by Bobin (1971), Gitomer, Morse & Newberger (1977, Max, McKee & Mead (1980) and Pert (1988), describes the behaviour when absorption is at the critical density and thermal conduction significant. The short-pulse limits of these flows are determined by thermal conduction and accounted for in the theory of Babuel-Peyrissac, Fauquignon & Floux (1969), Caruso & Gratton (1969) and Pert (1986a).…”

“…On the other hand, the deflagration model of Fauquignon & Floux (1970), formalized by Bobin (1971), Gitomer, Morse & Newberger (1977, Max, McKee & Mead (1980) and Pert (1988), describes the behaviour when absorption is at the critical density and thermal conduction significant. The short-pulse limits of these flows are determined by thermal conduction and accounted for in the theory of Babuel-Peyrissac, Fauquignon & Floux (1969), Caruso & Gratton (1969) and Pert (1986a).…”