Dielectronic recombination of Pb+79 atomic ions at high spectral resolution

MITNIK, D. M.; PINDZOLA, M. S.; BADNELL, N. R.

PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS

The American Physical Society

Año: 2000 vol. 61 p. 22705 - 22715

1050-2947

Dielectronic recombination cross sections for �n=0 transitions in Pb79+ are calculated in a fully relativistic distorted-wave approximation. We present detailed nlj results for the first resonances associated with the 2s-->2p¯ (j=12) core excitation, which opens up at n=20, and for the first resonances associated with the 2s-->2p (j=32) core excitation, which overlap the 1s22p¯nl resonances series. An accurate identification of these peaks is of importance in the ongoing dielectronic recombination experiments for the determination of the 2s-2p threshold energies. Careful examinations of Breit interaction and QED effects are performed in order to calculate the resonance energies with a resolution comparable with present experimental resolution. Fully relativistic calculations for Auger and radiative rates are performed for an accurate determination of the peak heights.