INVESTIGADORES
MITNIK Dario Marcelo
artículos
Título:
Deep-Core Dielectronic-Capture Resonances in the Electron-Impact Ionization of Heavy Atomic Ions
Autor/es:
AICHELE, K.; HATHIRAMANI, D.; SCHEUERMANN, F.; MULLER, A.; SALZBORN, E.; MITNIK, D.; COLGAN, J.; PINDZOLA, M. S.
Revista:
PHYSICAL REVIEW LETTERS
Editorial:
The American Physical Society
Referencias:
Año: 2001 vol. 86 p. 620 - 623
ISSN:
0031-9007
Resumen:
Experimental measurements and theoretical calculations are carried out
for the electron-impact ionization of Sm12+. The low energy
region of the single ionization cross section for Sm12+ is
found to be dominated by contributions from the indirect process of
excitation autoionization. At about 1.0 keV strong resonance features
are found in the experimental crossed-beam measurements performed in
scan mode at high resolution. Theoretical calculations confirm that the
high energy experimental features are due to deep-core dielectronic
capture followed by sequential double Auger decay. The discovery of
these unusual high energy resonances in single and multiple ionization
opens the door for future systematic studies of how heavy atomic ions
with deep inner-shell vacancies achieve final stabilization.
