F. Merkt

activity

20082026

most citedDriving Rydberg-Rydberg transitions from a co-planar microwave waveguide

110 citations · 1k across the 35 of their papers we have counts for

collaborators

Showing physics.chem-phShow all

12 papers · 1 filter

physics.chem-ph2017★ 1 cited

High-resolution photoelectron-spectroscopic investigation of the H $_{2}$ O $^{+}$ cation in its $A ~^{+}$ electronic state

Clément Lauzin, Bérenger Gans, Frédéric Merkt

The photoelectron spectrum of water has been recorded in the vicinity of the $A ~^{+}$ $\leftarrow$ $X ~$ transition between 112 000 and 116 000 cm$^{…

physics.chem-ph2017★ 71 cited

New method to study ion-molecule reactions at low temperatures and application to the H $_{2}^{+}$ + H $_{2}$ $\to$ H $_{3}^{+}$ + H reaction

Pitt Allmendinger, Johannes Deiglmayr, Otto Schullian +4

Studies of ion-molecule reactions at low temperatures are difficult because stray electric fields in the reaction volume affect the kinetic energy of charged reaction partners. We…

physics.chem-ph2017★ 15 cited

Precision measurement of the rotational energy-level structure of the three-electron molecule He $_{2}^{+}$

Luca Semeria, Paul Jansen, Frédéric Merkt

The term values of all rotational levels of the $^{4}$ He $_{2}^{+} X^{+}^{2} Σ_{u}^{+} (ν^{+} = 0)$ ground vibronic state with rotational quantum number $N^{+} \leq 19$ have been determined with an…

physics.chem-ph2017★ 3 cited

Infrared spectroscopy of molecular ions in selected rotational and spin-orbit states

Ugo Jacovella, Josef A. Agner, Hansjürg Schmutz +2

First results are presented obtained with an experimental setup developed to record IR spectra of rotationally state-selected ions. The method we use is a state-selective version o…

physics.chem-ph2017

Spin-orbit coupling and rovibrational structure in the iododiacetylene radical cation by PFI-ZEKE photoelectron spectroscopy

Katrin Dulitz, Elias Bommeli, Guido Grassi +2

The photoelectron spectrum of the $X^{+}^{2} Π \leftarrow X^{1} Σ^{+}$ photoionising transition in iododiacetylene, HC $_{4}$ I, has been recorded using pulsed-f…

physics.chem-ph2017★ 15 cited

High-resolution spectroscopy of He $_{2}^{+}$ using Rydberg-series extrapolation and Zeeman-decelerated supersonic beams of metastable He $_{2}$

Paul Jansen, Luca Semeria, Frédéric Merkt

Recently, high-resolution spectroscopy of slow beams of metastable helium molecules (He $_{2}^{*}$ ) generated by multistage Zeeman deceleration was used in combination with Rydberg-seri…

physics.chem-ph2017★ 31 cited

Observation and calculation of the quasi-bound rovibrational levels of the electronic ground state of H $_{2}^{+}$

Maximilian Beyer, Frédéric Merkt

Although the existence of quasi-bound rotational levels of the $X^{+}^{2} Σ_{g}^{+}$ ground state of H $_{2}^{+}$ has been predicted a long time ago, these states have never been observed. Ca…

physics.chem-ph2017★ 4 cited

Vacuum-ultraviolet frequency-modulation spectroscopy

Urs Hollenstein, Hansjürg Schmutz, Josef Anton Agner +2

Frequency-modulation (FM) spectroscopy has been extended to the vacuum-ultraviolet (VUV) range of the electromagnetic spectrum. Coherent VUV laser radiation is produced by resonanc…

physics.chem-ph2017★ 6 cited

Rydberg states of helium in electric and magnetic fields of arbitrary relative orientation

Ondřej Tkáč, Matija Žeško, Josef Anton Agner +2

A spectroscopic study of Rydberg states of helium ( $n$ = 30 and 45) in magnetic, electric and combined magnetic and electric fields with arbitrary relative orientations of the fiel…

physics.chem-ph2016★ 62 cited

Observation of enhanced rate coefficients in the H $_{2}^{+}$ + H $_{2}$ $\to$ H $_{3}^{+}$ + H reaction at low collision energies

Pitt Allmendinger, Johannes Deiglmayr, Katharina Höveler +2

The energy dependence of the rate coefficient of the H $_{2}^{+} + H_{2} \to H_{3}^{+} + H$ reaction has been measured in the range of collision energies between $k…

physics.chem-ph2016★ 19 cited

Structure and dynamics of H $_{2}^{+}$ near the dissociation threshold: a combined experimental and computational investigation

Maximilian Beyer, Frédéric Merkt

The pulsed-field-ionization zero-kinetic-energy photoelectron spectrum of H $_{2}$ has been recorded in the vicinity of the dissociative-ionization threshold following three-photon ex…

physics.chem-ph2014★ 38 cited

Slow and velocity-tunable beams of metastable He $_{2}$ by multistage Zeeman deceleration

Michael Motsch, Paul Jansen, Josef A. Agner +2

Metastable helium molecules (He $_{2}^{*}$ ) have been generated by striking a discharge in a supersonic expansion of helium gas from a pulsed valve. When operating the pulsed valve at r…

High-resolution photoelectron-spectroscopic investigation of the H2​O+ cation in its A~+ electronic state

New method to study ion-molecule reactions at low temperatures and application to the H2+​ + H2​ → H3+​ + H reaction

Precision measurement of the rotational energy-level structure of the three-electron molecule He2+​