The time scales and formation mechanisms of tri-hydrogen cation products in organic
molecule ionization processes are poorly understood, despite their cardinal role in the …

The new Cryogenic Storage Ring at the Max Planck Institute for Nuclear Physics
(Heidelberg, Germany) has recently become operational. One of the main research areas …

This work presents numerical simulations of the kinetic temperature of ions stored in a linear
multipole RF trap (22-pole trap) under the influence of elastic collisions with buffer gas …

A new design of a cryogenic linear 22-pole ion trap has been constructed and tested. It is
essentially a copper housing to which opposite inner walls two electrode sets are attached …

Four decades of experimental and theoretical studies of the dissociative recombination of
the seemingly “simple” H 3+ ions with electrons have often given strongly disagreeing …

High-resolution dissociative recombination rate coefficients of rotationally cool and hot H 3+
in the vibrational ground state have been measured with a 22-pole trap setup and a Penning …

Recombination of H+ 3 with electrons is studied in a low-temperature plasma containing He,
H 2 and Ar at different He and H 2 densities. The effective plasma recombination rate is …

plays a key role in interstellar chemistry as the initiator of ion–molecule chemistry. The
amount of observed in dense interstellar clouds is consistent with expectations, but the large …

ABSTRACT A comprehensive chemistry of the highly deuterated species D 2, D+ 2, D 2 H+,
and D+ 3 in the early universe is presented. Fractional abundances for each are calculated …

This contribution summarizes a variety of results and ongoing activities, which contribute to
our understanding of inelastic and reactive collisions involving hydrogen ions. In an …