June 30, 2025 to July 4, 2025
Europe/Vienna timezone

Ground and First Excited States of the NaSr Molecule: Experimental and Theoretical Study

Jul 1, 2025, 3:15 PM
1h 45m
Poster only Atomic and molecular spectroscopy, photo-induced processes Poster Session 2

Speaker

Jacek Szczepkowski (Institute of Physics Polish Academy of Sciences)

Description

In recent years, a growing interest towards open-shell heteronuclear molecules can be noticed. These molecules attract particular attention of physicists involved in experiments at ultracold conditions, because they are known as "doubly polar molecules" having both electric and magnetic permanent dipole moments. Such properties provide a unique possibility for quantum control and simulations.

We report the first spectroscopic investigation of the NaSr molecule. Spectra related to the B(2)$^2\Sigma^+\to$ X(1)$^2\Sigma^+$ transition were observed with partial rotational resolution by thermoluminescence and laser induced fluorescence techniques. Simultaneously, potential energy curves of the lowest electronic states of NaSr and transition dipole moments were calculated using two different theoretical approaches. Comparison with theoretical results allowed to interpret the experimental spectra and deduce the salient molecular constants of the X$(1)^2\Sigma^+$ and B(2)$^2\Sigma^+$ states.

Authors

Jacek Szczepkowski (Institute of Physics Polish Academy of Sciences) Marcin Gronowski (Institute of Theoretical Physics, Faculty of Physics, University of Warsaw) Matylda Olko (Institute of Physics Polish Academy of Sciences) Romain Vexiau (Laboratoire Aimé Cotton, CNRS,Université Paris-Saclay) Michał Tomza (Institute of Theoretical Physics, Faculty of Physics, University of Warsaw) Olivier Dulieu (Laboratoire Aimé Cotton, CNRS,Université Paris-Saclay) Paweł Kowalczyk (Institute of Experimental Physics, Faculty of Physics, University of Warsaw) Włodzimierz Jastrzebski (Institute of Physics Polish Academy of Sciences)

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