Synchrotron X-ray photoabsorption spectroscopy of plasmas

Alvarez Ruiz, Jesus; Cotelo Ferreiro, Manuel; García de la Varga, Alberto; Dortan, F. de; Velarde Mayol, Pedro y Perlado Martín, José Manuel (2011). Synchrotron X-ray photoabsorption spectroscopy of plasmas. En: "COST Meeting Action 2011", 16/11/2011 - 18/11/2011, París, Francia.


Título: Synchrotron X-ray photoabsorption spectroscopy of plasmas
  • Alvarez Ruiz, Jesus
  • Cotelo Ferreiro, Manuel
  • García de la Varga, Alberto
  • Dortan, F. de
  • Velarde Mayol, Pedro
  • Perlado Martín, José Manuel
Tipo de Documento: Ponencia en Congreso o Jornada (Póster)
Título del Evento: COST Meeting Action 2011
Fechas del Evento: 16/11/2011 - 18/11/2011
Lugar del Evento: París, Francia
Título del Libro: Proceedings of COST Meeting Action 2011
Fecha: 2011
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería Nuclear [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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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 (mayor que 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

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