O 1s excitation and ionization processes in the CO2 molecule studied via detection of low-energy fluorescence emission

Kivimäki, A.; Alvarez Ruiz, Jesus; Wasowicz, T.J.; Callegari, C.; Simone, M. de; Alagia, M.; Ritchter, R. y Coreno, M. (2011). O 1s excitation and ionization processes in the CO2 molecule studied via detection of low-energy fluorescence emission. "Journal of Physics B: Atomic, Molecular and Optical Physics", v. 44 (n. 16); pp.. ISSN 0953-4075. https://doi.org/10.1088/0953-4075/44/16/165103.

Descripción

Título: O 1s excitation and ionization processes in the CO2 molecule studied via detection of low-energy fluorescence emission
Autor/es:
  • Kivimäki, A.
  • Alvarez Ruiz, Jesus
  • Wasowicz, T.J.
  • Callegari, C.
  • Simone, M. de
  • Alagia, M.
  • Ritchter, R.
  • Coreno, M.
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Physics B: Atomic, Molecular and Optical Physics
Fecha: 2011
Volumen: 44
Materias:
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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Resumen

Oxygen 1s excitation and ionization processes in the CO2 molecule have been studied with dispersed and non-dispersed fluorescence spectroscopy as well as with the vacuum ultraviolet (VUV) photon?photoion coincidence technique. The intensity of the neutral O emission line at 845 nm shows particular sensitivity to core-to-Rydberg excitations and core?valence double excitations, while shape resonances are suppressed. In contrast, the partial fluorescence yield in the wavelength window 300?650 nm and the excitation functions of selected O+ and C+ emission lines in the wavelength range 400?500 nm display all of the absorption features. The relative intensity of ionic emission in the visible range increases towards higher photon energies, which is attributed to O 1s shake-off photoionization. VUV photon?photoion coincidence spectra reveal major contributions from the C+ and O+ ions and a minor contribution from C2+. No conclusive changes in the intensity ratios among the different ions are observed above the O 1s threshold. The line shape of the VUV?O+ coincidence peak in the mass spectrum carries some information on the initial core excitation

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
FP7226716ELISASin especificarEuropean Light Sources Activities - Synchrotrons and Free Electron Lasers

Más información

ID de Registro: 12282
Identificador DC: http://oa.upm.es/12282/
Identificador OAI: oai:oa.upm.es:12282
Identificador DOI: 10.1088/0953-4075/44/16/165103
URL Oficial: http://iopscience.iop.org/0953-4075/44/16/165103/
Depositado por: Memoria Investigacion
Depositado el: 14 Ago 2012 09:00
Ultima Modificación: 26 Ene 2015 11:55
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