Experimental study of plane and cylindrical laser driven, shock wave propagation

Billon, D.; Cognard, D.; Launspach, J.; Patou, C.; Redon, D.; Schirmann, D.

doi:10.1016/0030-4018(75)90195-9

Cited by 15 publications

(2 citation statements)

References 5 publications

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“…Theoretical models were developed to investigate some difficult physical problems, such as equations of state, self-similar test solutions and hydrodynamic instabilities of the implosion [16]. Cylindrical geometry appeared convenient for studying the formation of a shock wave [17] and its propagation and convergence in a hollow target [18]. Then, spherical implosion experiments as proposed by LLNL [19] were undertaken.…”

Section: Laser-matter Interactionmentioning

confidence: 99%

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

1985

Nucl. Fusion

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Section: Laser-matter Interactionmentioning

confidence: 99%

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

1985

Nucl. Fusion

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“…Shock waves produced by intense lasers have been investigated for many years (Kidder 1968;Van Kessel & Sigel 1974;Billon et al 1975;Van Kessel 1975). It has been shown that in laser-driven ablation of solid targets, high-pressure shock waves are an important mechanism for energy transport (Van Kessel & Sigel 1974;Veeser & Solem 1978;Trainor et al 1979).…”

Section: Introductionmentioning

confidence: 99%

Optical emissivity from a laser-driven shock-heated dense plasma

Mahdieh¹,

Hall²

1996

Laser Part. Beams

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The aluminium side of two-layer Al-Plastic targets were irradiated with a long pulse (-2.4 ns FWHM) 1.06-/xm laser light at intensities up to 7 x 10 13 W/cm 2 . The time history of the thermal emission of the confined rear surface of the aluminum was measured. Visible emission only occurs for a short time after the arrival of the laser-generated shock waves. Over the range of the measurements, the duration and the intensity of the emission reduce with increasing laser intensity. The experimental results are in good agreement with the results of a simple phenomenological model that assumes a linear temperature and density profile on the shock front. The values of shock velocity and maximum temperature and density that were used in the model were found using the hydrodynamic simulation code MEDUSA. From the model the shock width was measured for different conditions by matching the emission of the experiment and model. It is found that the time history of the emission is strongly sensitive to the ionization potential of the plastic that is assumed to change with density from -4 eV at zero pressure to zero at high densities. The technique provides a way to measure the pressure metallization of large band gap insulators.

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