Observatorio de I+D+i UPM

Memorias de investigación
Book chapters:
Study of the impact of small-scale plasma modulations and the size of the plasma on seeded soft x-ray laser homogeneity.
Year:2008
Research Areas
  • Naval engineering
Information
Abstract
In the present work, we have used the 2D AMR hydrodynamic code with radiation transport ARWEN to study the plasma homogeneity alteration on small scale (1-10 ìm) that may arise from initial target defects or driving laser intensity modulations. These simulations show that target rugosity imprints strongly the plasma creating a complicated pattern of electronic density. In addition to this, we have done several simulations of plasmas of different size (from 20 ìm to 2 mm height) to study the different stages of a seeded soft x-ray laser amplifier. We have observed that 2D hydrodinamic effects lower the gain in small plasmas. As the main pulse, which creates the population inversion, interacts with a fully developed plasma, we have implemented a ray-tracing subroutine for the laser energy deposition in order to treat correctly the refraction effects of the short pulse. Simulations show that these effects are not negligible in rugous targets. Finally, simulations of the behaviour of the seeded beam in the amplifying plasma have been done with the 3D ray-tracing (amplification in non-homogeneous media) code SHADOX, as a post-processor of ARWEN. Prior ray-tracing, gain calculation is done on the output of ARWEN using a simple 3-level atomic model.
International
Si
10.1088/1742-6596/112/4/042066
Book Edition
0
Book Publishing
ISBN
1742-6596
Series
Book title
Journal of Physics: Conference Series
From page
1
To page
4
Participants
  • Autor: EDUARDO OLIVA
  • Autor: P. ZEITOUN
  • Autor: M. FAJARDO
  • Autor: Pedro Velarde Mayol (UPM)
  • Autor: KEVIN CASSOU
  • Autor: M. MARTI
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Departamento: Ingeniería Nuclear
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
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