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
  • Physics - Atomic and molecular physics
Information
Abstract
The interaction of high intensity X-ray lasers with matter is modeled. A collisional-radiative time-dependent module is implemented to study radiation transport in matter from ultrashort and ultra-intense 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, auto-ionization 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. (C) 2013 Elsevier B.V. All rights reserved.
International
Si
JCR
Si
Title
High Energy Density Physics
ISBN
1574-1818
Impact factor JCR
1,603
Impact info
Datos JCR del año 2012
Volume
9
10.1016/j.hedp.2013.05.010
Journal number
3
From page
542
To page
547
Month
SEPTIEMBRE
Ranking
Participants
  • Autor: Alberto Garcia De la Varga (UPM)
  • Autor: Pedro Velarde Mayol (UPM)
  • Autor: François de Gaufridy
  • Autor: David Portillo Garcia (UPM)
  • Autor: Manuel Cotelo Ferreiro (UPM)
  • Autor: Alfonso Barbas Espa (UPM)
  • Autor: Agustín González
  • Autor: Philippe Zeitoun
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto de Fusión 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)