INVESTIGADORES
MITNIK Dario Marcelo
artículos
Título:
Excitation-autoionization through 3d-4l inner-shell excitations in Cu- to Kr-like ions and the effect onfractional-ion-abundance balance in coronal plasmas
Autor/es:
MITNIK, D.; MANDELBAUM, P.; SCHWOB, J. L.; BAR-SHALOM, A.; OREG, J.; GOLDSTEIN, W. H.
Revista:
PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS
Editorial:
AIP, American Physical Society
Referencias:
Año: 1994 vol. 50 p. 4911 - 4929
ISSN:
1050-2947
Resumen:
Excitation of inner-shell electrons into autoionizing levels followed by
autoionization (EA) can enhance the total ionization rate. For ions
isoelectronic to elements of the fourth row, the present results show
that the enhancements can be much more important than those previously
calculated for the preceding isoelectronic sequences. �n=1 3d-4l
inner-shell excitations, which are the dominant EA channels, are
considered here. Detailed computations of EA rates were performed using
the relativistic distorted-wave method, and the behavior of the EA rate
coefficients along the Cu, Zn, Ga, and Kr isoelectronic sequences has
been analyzed. In the other sequences from Ge to Br with configurations
involving a very large number of levels, EA calculations have been
performed for a few elements only. In view of an easy use of the data,
and for application to other elements, approximate analytical
expressions have been deduced for ionization energies, average
inner-shell excited-configuration energies, total electron-impact
excitation rates, as well as average branching ratios for
autoionization. These data enable a direct evaluation of the EA rates in
all the sequences from Cu to Kr for all the elements with
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