Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Non-Maxwellian electron distributions in time-dependent simulations of low-Z materials illuminated by a high-intensity X-ray laser
Year:2013
Research Areas
  • Engineering
Information
Abstract
The interaction of high intensity X-ray lasers with matter is modeled. A collisional-radiative timedependent module is implemented to study radiation transport in matter from ultrashort and ultraintense X-ray bursts. Inverse bremsstrahlung absorption by free electrons, electron conduction or hydrodynamic effects are not considered. The collisional-radiative system is coupled with the electron distribution evolution treated with a Fokker-Planck approach with additional inelastic terms. The model includes spontaneous emission, resonant photoabsorption, collisional excitation and de-excitation, radiative recombination, photoionization, collisional ionization, three-body recombination, autoionization and dielectronic capture. It is found that for high densities, but still below solid, collisions play an important role and thermalization times are not short enough to ensure a thermal electron distribution. At these densities Maxwellian and non-Maxwellian electron distribution models yield substantial differences in collisional rates, modifying the atomic population dynamics.
International
Si
JCR
Si
Title
High Energy Density Physics
ISBN
1574-1818
Impact factor JCR
1,603
Impact info
Volume
9
Journal number
From page
542
To page
547
Month
SIN MES
Ranking
Participants
  • Autor: A. García de la Varga (Instituto de Fusión Nuclear, Universidad Politécnica de Madrid)
  • Autor: Pedro Velarde Mayol (UPM)
  • Autor: F. de Gaufridy (Instituto de Fusión Nuclear, Universidad Politécnica de Madrid)
  • Autor: D. Portillo (Instituto de Fusión Nuclear, Universidad Politécnica de Madrid)
  • Autor: Manuel Cotelo Ferreiro (UPM)
  • Autor: A. Barbas (Instituto de Fusión Nuclear, Universidad Politécnica de Madrid)
  • Autor: A. González (Instituto de Fusión Nuclear, Universidad Politécnica de Madrid)
  • Autor: Ph. Zeitoun (Laboratoire d¿Optique Applique, UMR CNRS/ENSTA ParisTech/Ecole Polytechnique ParisTech)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear
  • Departamento: Ingeniería Nuclear
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)