The motion of neutral molecules in a beam can be manipulated and controlled with
inhomogeneous electric and magnetic fields. Static fields can be used to deflect or focus …

The recent development of a range of new methods for producing samples of gas-phase
molecules that are translationally cold (K) or ultracold (mK) is driving efforts to study reactive …

This paper presents a review of the current state of the art in the research field of cold and
ultracold molecules. It serves as an introduction to the focus issue ofNew Journal of Physics …

Research with cold molecules has developed rapidly in recent years. There is now a variety
of established methods for cooling molecules into the millikelvin range. Nevertheless, a focal …

We present a method which delivers a continuous, high-density beam of slow and internally
cold polar molecules. In our source, warm molecules are first cooled by collisions with a …

A three-dimensional trap for Rydberg atoms in selected Stark states has been realized
experimentally. H atoms seeded in a supersonic expansion of Ar are excited to the low-field …

We report the creation of a Bose-Einstein condensate using buffer-gas cooling, the first
realization of Bose-Einstein condensation using a broadly general method which relies …

We consider how trapped molecules can be sympathetically cooled by ultracold atoms. As a
prototypical system, we study LiH molecules co-trapped with ultracold Li atoms. We …

The scattering length is commonly used to characterize the strength of ultracold atomic
interactions, since it is the leading parameter in the low-energy expansion of the scattering …

Electrostatic velocity filtering is a technique for the production of continuous guided beams of
slow polar molecules from a thermal gas. We extended this technique to produce pulses of …