Since Arrhenius first proposed an equation to account for the behavior of thermally activated
reactions in 1889, significant progress has been made in our understanding of chemical …

Translationally cold, spatially localised molecular ions prepared by sympathetic cooling with
laser-cooled atomic ions in ion traps have recently found a wide range of applications in …

We present an all-optical mass spectrometry technique to identify trapped ions. The new
method uses laser-cooled ions to determine the mass of a cotrapped dark ion with a sub …

The prospect of studying state-to-state chemical reaction dynamics, with full control over all
of the reaction parameters, is becoming a reality for a small number of systems. Thanks to …

Sympathetic cooling of trapped ions has become an indispensable tool for quantum-
information processing and precision spectroscopy. In the simplest situation a single …

The direct laser cooling of neutral diatomic molecules in molecular beams suggests that
trapped molecular ions can also be laser cooled. The long storage time and spatial …

Isotopic substitution has long been used to understand the detailed mechanisms of chemical
reactions; normally the substitution of hydrogen by deuterium leads to a slower reaction …

Light-assisted reactive collisions between laser-cooled Ba+ ions and Rb atoms were studied
in an ion–atom hybrid trap. The reaction rate was found to strongly depend on the electronic …

Cold chemical reactions between laser-cooled Ca+ ions and Rb atoms were studied in an
ion-atom hybrid trap. Reaction rate constants were determined in the range of collision …

Laser-cooled atomic ions form ordered structures in radiofrequency ion traps and in Penning
traps. Here we demonstrate in a Penning trap the creation and manipulation of a wide …