Multiple ionization effects in x-ray emission induced by heavy ions

• Autor(a) principal: Czarnota,M.
• Data de Publicação: 2006
• Outros Autores: Pajek,M., Banas,D., Dousse,J.-Cl., Maillard,Y.-P., Mauron,O., Raboud,P. A., Berset,M., Chmielewska,D., Rzadkiewicz,J., Sujkowski,Z., Hoszowska,J., Slabkowska,K., Polasik,M.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Brazilian Journal of Physics
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000400013
• topic: Multiple ionization; X-ray satellite structure; MCDF calculations

The x-ray satellite structure of Pd Lalpha1,2(L3M4,5) transition excited by an impact of O7+ and Ne6+ ions with energies 279 and 178 MeV, respectively, which were measured using a high-resolution von Hamos crystal spectrometer, is discussed in terms of the multi-configuration Dirac-Fock (MCDF) calculations. We demonstrate, by using the arguments of the general central limit theorem (GCLT), that a structure of complex M-shell satellites of Pd Lalpha1,2(M-m) transitions for a higher number of spectator vacancies (m > 4), which consists of hundreds of thousands of individual x-ray transitions as obtained from the MCDF calculations, can be well described by a single Voigtian profile. The Lorentzian width of such Voigtian line can be well modeled by using the results of the MCDF calculations for simpler configurations with a number of vacancies m < 4 . This method allows one to describe realistically a complex structure of M-shell satellites, thus extending the applicability of the MCDF calculations, which are limited by an increasing complexity of numerical calculations.