Symmetry-dependent multielectron excitations near the C 1s ionization threshold and distortion of the shape resonance in CO(2)

A De Fanis; N Saito; A A Pavlychev; D Yu Ladonin; M Machida; K Kubozuka; I Koyano; K Okada; K Ikejiri; A Cassimi; A Czasch; R Dörner; H Chiba; Y Sato; K Ueda

doi:10.1103/PhysRevLett.89.023006

Symmetry-dependent multielectron excitations near the C 1s ionization threshold and distortion of the shape resonance in CO(2)

Phys Rev Lett. 2002 Jul 8;89(2):023006. doi: 10.1103/PhysRevLett.89.023006. Epub 2002 Jun 21.

Authors

A De Fanis¹, N Saito, A A Pavlychev, D Yu Ladonin, M Machida, K Kubozuka, I Koyano, K Okada, K Ikejiri, A Cassimi, A Czasch, R Dörner, H Chiba, Y Sato, K Ueda

Affiliation

¹ Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan.

PMID: 12096995
DOI: 10.1103/PhysRevLett.89.023006

Abstract

Satellite bands accompanying the C 1s photoline for the CO2 molecule parallel to the electric vector of the incident radiation E are found to be more intense than those for CO2 perpendicular to E in the shape resonance region. This indicates that multielectron excitations are caused in part by the interaction of the outgoing C 1s photoelectron with the valence electrons. The photoelectron-impact valence excitations couple with the C 1s single-hole ionization and distort the shape resonance significantly. We assign the broad resonance at approximately 312 eV to a distorted Sigma(u) shape resonance.