Document Type

Article

Date Information

2017

Publication Date

2017

Department

Department of Physics

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 Tbˉ and Dyˉ anions in the Regge-pole calculated electron elastic cross sections.

DOI

10.1088/1742-6596/875/6/052014

Source

Journal of Physics: Conference Series, Volume 875

Creative Commons License

Creative Commons Attribution 3.0 License
This work is licensed under a Creative Commons Attribution 3.0 License.

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