F. Merkt

activity

20242026

collaborators

4 papers

physics.atom-ph2026

The Stark effect in molecular Rydberg states: Calculation of Rydberg-Stark manifolds of H $_{2}$ and D $_{2}$ including fine and hyperfine structures

Ioana Doran, Leon Jeckel, Maximilian Beyer +2

We present a general theoretical treatment and calculations of the fine and hyperfine structures in the spectra of high- $n$ molecular Rydberg states in static uniform electric fiel…

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…

physics.atom-ph2024

The Rotational and Spin-Rotational Level Structure of para-H $_{2}^{+}$ from High-Resolution MQDT-Assisted Rydberg-State Spectroscopy

I. Doran, M. Beyer, F. Merkt

The structure of the low-lying rotational levels of the X $^{+}$ $^{2} I^£_{g}^{+}$ ( $v^{+} = 0$ ) vibronic ground state of para-H $_{2}^{+}$ has been determined by combining frequency-comb calibrat…

The Stark effect in molecular Rydberg states: Calculation of Rydberg-Stark manifolds of H2​ and D2​ including fine and hyperfine structures

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

The Rotational and Spin-Rotational Level Structure of para-H2+​ from High-Resolution MQDT-Assisted Rydberg-State Spectroscopy

The Stark effect in molecular Rydberg states: Calculation of Rydberg-Stark manifolds of H $_{2}$ and D $_{2}$ including fine and hyperfine structures

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

The Rotational and Spin-Rotational Level Structure of para-H $_{2}^{+}$ from High-Resolution MQDT-Assisted Rydberg-State Spectroscopy