Tune-out wavelengths for potassium

TL;DR

This paper calculates the five longest tune-out wavelengths for potassium using a relativistic model, analyzing the contributions of different terms in the atom's dynamic polarizability near key electronic transitions.

Contribution

It provides precise calculations of potassium's tune-out wavelengths with a relativistic approach, highlighting the significance of various polarizability terms near specific transitions.

Findings

Identified five longest tune-out wavelengths for potassium.

Analyzed the impact of different polarizability terms near $4p_J$, $5p_J$, and $6p_J$ transitions.

Demonstrated the effectiveness of a relativistic structure model for atomic wavelength predictions.

Abstract

The five longest tune-out wavelengths for the potassium atom are determined using a relativistic structure model which treats the atom as consisting of a single valence electron moving outside a closed shell core. The importance of various terms in the dynamic polarizability in the vicinity of the $4p_J$, $5p_J$ and $6p_J$ transitions are discussed.