Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Implosion Symmetry of Laser-Irradiated Cylindrical Targets
Year:2008
Research Areas
  • Electronic
Information
Abstract
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.
International
Si
JCR
Si
Title
LASER AND PARTICLE BEAMS
ISBN
0263-0346
Impact factor JCR
4,696
Impact info
Volume
26
Journal number
1
From page
113
To page
126
Month
MARZO
Ranking
Participants
  • Participante: G. SCHURTZ
  • Autor: Julio Ramirez Garrido (UPM)
  • Autor: Rafael Ramis Abril (UPM)
Research Group, Departaments and Institutes related
  • 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
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)