Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Synchrotron X-ray photoabsorption spectroscopy of plasmas
Year:2011
Research Areas
  • Physics - Radiation physics,
  • Physics - Atomic and molecular physics
Information
Abstract
Theoretical X-ray opacities are used in numerous radiative transfer simulations of plasmas at different temperatures and densities, for example astrophysics, fusion, metrology and EUV and X-rays radiation sources. However, there are only a reduced number of laboratories working on the validation of those theoretical results empirically, in particular for high temperature plasmas (> 1eV). One of those limitations comes from the use of broad band EUV- X ray sources to illuminate the plasma which, among other issues, present low reproducibility and repetition rate [1]. Synchrotron radiation facilities are a more appropriate radiation source in that sense, since they provide tunable, reproducible and high resolution photons. Only their ¿low¿ photon intensity for these experiments has prevented researchers to use it for this purpose. However, as new synchrotron facilities improve their photon fluxes, this limitation not longer holds [2]. This work evaluates the experimental requirements to use third generation synchrotron radiation sources for the empirical measurement of opacities of plasmas, proposing a pausible experimental set-up to carry them out. Properties of the laser or discharge generated plasmas to be studied with synchrotron radiation will be discussed in terms of their maximum temperatures, densities and temporal evolution. It will be concluded that there are encouraging reasons to pursue these kind of experiments which will provide with an appropriate benchmark for theoretical opacities. http://microbeam.eu/MP0601_Paris_web/Paris_MP0601_webpage.htm
International
Si
Congress
COST-MP0601 European Cooperation in Science and Technology, action MP0601 (short wavelength laboratory sources)
960
Place
Paris (Francia)
Reviewers
No
ISBN/ISSN
Start Date
16/11/2011
End Date
18/11/2011
From page
To page
Participants
  • Autor: Jesus Alvarez Ruiz (UPM)
  • Autor: Manuel Cotelo Ferreiro (UPM)
  • Autor: Alberto García de la Varga (Instituto de Fusión Nuclear)
  • Autor: François de Gaufridy (Institute of Physics, Czech Academy of Sciences)
  • Autor: Pedro Velarde Mayol (UPM)
  • Autor: Jose Manuel Perlado Martin (UPM)
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)