Atomic Rydberg States

Rydberg states and spin-orbit coupling of the thallium atom

“…By taking the derivative of the formula with respect to the principal quantum number n, one obtains dE" dn 2Jq (n - 5) where A is the Rydberg constant, 5 is the quantum defect, and n -5 denotes the effective principal quantum number which can be related to the term energy E"by the expression n 5=n'=Z -/E' a n (2) For a neutral atom, the charge of the atomic core Z, is equal to unity. As n becomes large, the left-hand side of Eq.…”

“…The resonance-enhanced multiphoton-ionization (REMPI) technique has been widely employed to probe the high-lying states of an atom or a molecule, and thereby numerous new states are identified [1,2]. These Rydberg states are difficult to probe with conventional optical spectroscopy.…”

Low field linear Stark effect on quasi-hydrogenic caesium series

“…This opens the way to various kinds of studies [10]. 1. Low-field linear Stark effect on atomic caesium.…”

“…Our purpose is to show that, for non-hydrogenic atoms, such a regime can take place at the lowest field values provided the effects of non-Coulombic corrections are energetically negligible compared with the linear Stark term in (1). They are measured with a quantum defect 8.…”

Excited states of Na and Al iso‐electronic ions: Symmetry adapted cluster–configuration interaction study

“…The study of Rydberg states of neutral atoms and their iso‐electronic ions is interesting and useful because of their importance in various physical processes and also in astrophysical observations 1–5. Different theoretical techniques have been applied to predict the transition energies of the Rydberg excited states of the first few members of the Na and Al iso‐electronic sequences.…”