343 citations · 682 across the 11 of their papers we have counts for
11 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…
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…
Cryogenic micro-calorimeters for mass spectrometric identification of neutral molecules and molecular fragments
O. Novotný, S. Allgeier, C. Enss +10
We have systematically investigated the energy resolution of a magnetic micro-calorimeter (MMC) for atomic and molecular projectiles at impact energies ranging from to…
An Efficient, Movable Single-Particle Detector for Use in Cryogenic Ultra-High Vacuum Environments
Kaija Spruck, Arno Becker, Florian Fellenberger +8
A compact, highly efficient single-particle counting detector for ions of keV/u kinetic energy, movable by a long-stroke mechanical translation stage, has been developed at the Max…
Storage-ring measurement of the hyperfine-induced 2s 2p 3P0 -> 2s2 1S0 transition rate in beryllium-like sulfur
S. Schippers, D. Bernhardt, A. Müller +8
The hyperfine induced 2s 2p 3P0 -> 2s2 1S0 transition rate in Be-like sulfur was measured by monitoring the decay of isotopically pure beams of 32-S12+ and 33-S12+ ions in a heavy-…
Dielectronic recombination of xenonlike tungsten ions
S. Schippers, D. Bernhardt, A. Müller +8
Dielectronic recombination (DR) of xenonlike W20+ forming W19+ has been studied experimentally at a heavy-ion storage-ring. A merged-beams method has been employed for obtaining ab…
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…
Temperature dependence of binary and ternary recombination of H3+ ions with electron
J. Glosik, R. Plasil, I. Korolov +7
We study binary and the recently discovered process of ternary He-assisted recombination of H3+ ions with electrons in a low temperature afterglow plasma. The experiments are carri…
Enhanced cosmic-ray flux toward zeta Persei inferred from laboratory study of H3+ - e- recombination rate
B. J. McCall, A. J. Huneycutt, R. J. Saykally +13
The H3+ molecular ion plays a fundamental role in interstellar chemistry, as it initiates a network of chemical reactions that produce many interstellar molecules. In dense clouds,…