Energies and radiation lifetimes of high lying Rydberg states of lutetium

Abstract

The 4f146s2nl (l=0,1,2, n=10-50) Rydberg states of Lu have been theoretically investigated. The energies and radiation lifetimes of these states have been calculated using relativistic perturbation theory with a zero-order model approximation. The contribution of the main channels of the Rydberg electron radiation decay has been considered in detail. The energy accuracy reaches approximately 1%. Interesting non-Coulomb properties have been predicted, their action is particularly strong in the radiation decay processes.

The level structure of atomic lutetium (Z= 71): a relativistic Hartree-Fock calculation

“…A comparison with other calculations and experiments are made in these Tables where the superscript " o " represents the odd-parity states. Fedchak et al [25], b,b1,b2 Dai et al [27], c Vidolova-Angelova [17], d Kwiatkowski et al [15], e Gorshkov et al [18]. Electron correlation effects and relativistic effects play an important role in the spectra of heavy elements.…”

Energies of Sr states with excited valence shell

“…In this paper, the relativistic perturbation theory with zero-order model potential [4,5] has been applied. The Sr atom (ground electron cinfiguration 4p65s 2, nuclear charge Z = 38) is considered as a system with two electrons above the closed shells core 4p 6 (core electrons number N~ = 36).…”

“…The used here method (the relativistic perturbation theory with a zero-order model approximation) has been described in details elsewhere (see [4] and references therein). The used here method (the relativistic perturbation theory with a zero-order model approximation) has been described in details elsewhere (see [4] and references therein).…”

Excitation of doublet F-levels of a lutetium atom by electron impact

“…The outermost shell of the lutetium atom is a fully-populated 6s 2 , preceded by an partially populated shell that contains only a single 5d electron. Lying further inward are 5p 6 and 5s 2 electron shells, and only then does the fully-populated 4f 14 shell occur. Thus, and unlike other REE atoms, the 4f 14 shell in LuI lies rather deep on the energy scale and therefore fails to affect the lutetium atom's optical spectrum in any substantial manner.…”