Novel Mechanism for Creating Long-Lived Metastable Atomic Negative Ions

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Title: Novel Mechanism for Creating Long-Lived Metastable Atomic Negative Ions
Author: Felfli, Zineb, Clark Atlanta University
Msezane, Alfred, Clark Atlanta University
Publication Date: 2017-01-01
Decade: 2010-2019
Abstract: A novel mechanism is proposed for creating long-lived metastable atomic negative ions in complex atoms. It exploits the orbital collapse of the 5d orbital in Gd (Z=64) into the 4f orbital of Tb (Z=65). In the region of collapse the properties of the 5d and 4f orbitals are quite sensitive to the changes in the effective potential. Consequently the collapse phenomenon impacts significantly the core-polarization interaction in the relevant atoms. The mechanism is demonstrated in Tb and Dy through the appearance of long-lived Tb? and Dy? anions in the Regge-pole calculated electron elastic cross sections.
Document Type: text
Format: application/pdf
Medium: articles
Source: Journal of Physics: Conference Series, Volume 875
Institution: Clark Atlanta University
DOI: 10.1088/1742-6596/875/6/052014
Handle: http://hdl.handle.net/20.500.12322/cau.ir:2017_felfli_msezane
Rights Statement: http://rightsstatements.org/vocab/InC/1.0/