78 citations · 349 across the 12 of their papers we have counts for
12 papers
Dissociative Recombination of Rotationally Cold OH and Its Implications for the Cosmic Ray Ionization Rate in Diffuse Clouds
Ábel Kálosi, Lisa Gamer, Manfred Grieser +12
Observations of OH are used to infer the interstellar cosmic ray ionization rate in diffuse atomic clouds, thereby constraining the propagation of cosmic rays through and the s…
Velocity Map Imaging with No Spherical Aberrations
Yehuda Ben-Shabo, Adeliya Kurbanov, Claus Dieter Schroter +3
Velocity map imaging (VMI) is a powerful technique that allows to infer the kinetic energy of ions or electrons that are produced from a large volume in space with good resolution.…
Understanding the temperatures of H3+ and H2 in diffuse interstellar sightlines
Jacques Le Bourlot, Evelyne Roueff, Franck Le Petit +3
The triatomic hydrogen ion H3+ is one of the most important species for the gas phase chemistry of the interstellar medium. Observations of H3+ are used to constrain important phys…
Experimental determination of the dissociative recombination rate coefficient for rotationally-cold CH and its implications for the diffuse cloud chemistry
Daniel Paul, Manfred Grieser, Florian Grussie +13
Observations of CH are used to trace the physical properties of diffuse clouds, but this requires an accurate understanding of the underlying CH chemistry. Until this work,…
Laser-probing the rotational cooling of molecular ions by electron collisions
Ábel Kálosi, Manfred Grieser, Robert von Hahn +9
We present state-selected measurements of rotational cooling and excitation rates of CH molecular ions by inelastic electron collisions. The experiments are carried out at the…
Radiative rotational lifetimes and state-resolved relative detachment cross sections from photodetachment thermometry of molecular anions in a cryogenic storage ring
C. Meyer, A. Becker, K. Blaum +23
Photodetachment thermometry on a beam of OH in a cryogenic storage ring cooled to below 10 K is carried out using two-dimensional, frequency and time dependent photodetachment…
Dissociative recombination measurements of NH using an ion storage ring
O. Novotný, M. Berg, D. Bing +12
We have investigated dissociative recombination (DR) of NH with electrons using a merged beams configuration at the TSR heavy-ion storage ring located at the Max Planck Institu…
Dissociative recombination measurements of HCl+ using an ion storage ring
O. Novotný, A. Becker, H. Buhr +12
We have measured dissociative recombination of HCl+ with electrons using a merged beams configuration at the heavy-ion storage ring TSR located at the Max Planck Institute for Nucl…
On the Ortho:Para Ratio of H3+ in Diffuse Molecular Clouds
Kyle N. Crabtree, Nick Indriolo, Holger Kreckel +2
The excitation temperature T_01 derived from the relative intensities of the J = 0 (para) and J = 1 (ortho) rotational levels of H2 has been assumed to be an accurate measure of th…
Resonant structure of low-energy H3+ dissociative recombination
Annemieke Petrignani, Simon Altevogt, Max H. Berg +17
New high-resolution dissociative recombination rate coefficients of rotationally cool and hot H3+ in the vibrational ground state have been measured with a 22-pole trap setup and a…
Chemical probing spectroscopy of H3+ above the barrier to linearity
Holger Kreckel, Dennis Bing, Sascha Reinhardt +3
We have performed chemical probing spectroscopy of H3+ ions trapped in a cryogenic 22-pole ion trap. The ions were buffer-gas cooled to 55K by collisions with helium and argon. Exc…
Dissociative recombination and low-energy inelastic electron collisions of the helium dimer ion
H. B. Pedersen, H. Buhr, S. Altevogt +10
This paper reports results from an experimental investigation of the dissociative recombination (DR) of the helium dimer ions at the heavy-ion Test Storage Ring (TSR) in Heidelberg…