V. Wirth

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physics.atom-ph2025

Precision Spectroscopy of the Fine Structure in the $a^{3} I^£_{u}^{+} (v = 0)$ and $c^{3} I^£_{g}^{+} (v = 4)$ States of the Helium Dimer

V. Wirth, M. Holdener, F. Merkt

With four electrons, He $_{2}$ is one of very few molecules for which first-principles quantum-chemical calculations that include the treatment of nonadiabatic, relativistic and quant…

physics.atom-ph2025

Characterization of the electronic ground state of He $_{2}^{+}$ by high-resolution photoelectron spectroscopy

M. Holdener, V. Wirth, N. A. Shahin +2

Excluding the very shallow potential minimum of the electronic ground state, all bound electronic states of He $_{2}$ have Rydberg character. Their potential-energy functions are simi…

Precision Spectroscopy of the Fine Structure in the a3I^£u+​(v=0) and c3I^£g+​(v=4) States of the Helium Dimer

Characterization of the electronic ground state of He2+​ by high-resolution photoelectron spectroscopy

Precision Spectroscopy of the Fine Structure in the $a^{3} I^£_{u}^{+} (v = 0)$ and $c^{3} I^£_{g}^{+} (v = 4)$ States of the Helium Dimer

Characterization of the electronic ground state of He $_{2}^{+}$ by high-resolution photoelectron spectroscopy