Novel mechanism for creating long-lived metastable atomic negative ions

摘要: A novel mechanism is proposed for creating long-lived metastable atomic negative ions in complex atoms. It exploits the orbital collapse of 5d Gd (Z=64) into 4f Tb (Z=65). In region properties and orbitals are quite sensitive to changes effective potential. Consequently phenomenon impacts significantly core-polarization interaction relevant The demonstrated Dy through appearance Tb− Dy− anions Regge-pole calculated electron elastic cross sections.