71 citations · 353 across the 16 of their papers we have counts for
5 papers · 1 filter
New method to study ion-molecule reactions at low temperatures and application to the H + H H + 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…
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…
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…
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 ( = 30 and 45) in magnetic, electric and combined magnetic and electric fields with arbitrary relative orientations of the fiel…
Measuring the dispersive frequency shift of a rectangular microwave cavity induced by an ensemble of Rydberg atoms
M. Stammeier, S. Garcia, T. Thiele +5
In recent years the interest in studying interactions of Rydberg atoms or ensembles thereof with optical and microwave frequency fields has steadily increased, both in the context…