Memorias de investigación
Artículos en revistas:
Implosion Symmetry of Laser-Irradiated Cylindrical Targets
Año:2008
Áreas de investigación
  • Electrónica
Datos
Descripción
We consider the symmetry of cylindrical implosions of laser targets with parameters corresponding to experiments proposed for the LIL laser facility at Bordeaux: eight laser beams in octahedrical configuration, delivering a total of 50 kJ of 0.35 microns laser light in 5 ns, impinging on 1.26 mm diameter polystyrene cylindrical shells filled with deuterium at 30 bar and 5.35 mg/cm3; this configuration allows to place diagnostics along the symmetry axis to evaluate directly the uniformity of implosion. Numerical studies have been carried out by using the hydrodynamic computer codes MULTI and CHIC, including one-dimensional, and two-dimensional R-Z and R-theta simulations. Deuterium is compressed into a 1 mm long and 50 microns diameter filament, with density ranging from 2 to 6 g/cm3 and temperatures above 1000 eV. In spite of the reduced numbers of beams, a good symmetry can be achieved with a careful choice of the irradiation pattern. The heat transport smoothing between laser absorption zone and ablation layer plays a fundamental role in the attenuation of residual non-uniformities. Also, it has been found that the radiation transport determines the radial structure of the compressed filament.
Internacional
Si
JCR del ISI
Si
Título de la revista
LASER AND PARTICLE BEAMS
ISSN
0263-0346
Factor de impacto JCR
4,696
Información de impacto
Volumen
26
DOI
Número de revista
1
Desde la página
113
Hasta la página
126
Mes
MARZO
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Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Investigación en Fusión Inercial y Física de Plasmas
  • Departamento: Fundamentos Matemáticos de la Tecnología Aeronáutica
  • Departamento: Física Aplicada a la Ingeniería Aeronáutica