P. Balling et al., WINDOW RESONANCE IN PHOTODETACHMENT OF THE NEGATIVE SILICON ION - STRONG INTERACTION OF THE 3P CONTINUUM WITH THE 3S-]3P SHAPE RESONANCE, Journal of physics. B, Atomic molecular and optical physics, 26(20), 1993, pp. 3531-3539
Photodetachment cross section measurements have been performed on the
Si-(3s(2)3p(3) S-4) ion using a pulsed dye laser and non-linear optica
l techniques in the photon energy region close to the 3s threshold. A
deep window resonance observed at a photon energy of 5.2 eV is a clear
manifestation of electron correlation resulting from the interaction
of the 3p-->epsilon s, epsilon d continua with the 3s(2)3p(3)-->3s3p(4
) autodetaching resonance. The experimental resonance parameters are c
ompared with theoretical predictions.