1. INTRODUCTION Beams of atoms and molecules are stalwart tools for spectroscopy and
studies of collisional processes. 1− 4 The supersonic expansion technique can create cold …

The field of cold molecules has become an important source of new insight in fundamental
chemistry and molecular physics. High-resolution spectroscopy benefits from translationally …

The field of experimental positronium physics has advanced significantly in the last few
decades, with new areas of research driven by the development of techniques for trapping …

Ultracold molecules represent a fascinating research frontier in physics and chemistry, but it
has proven challenging to prepare dense samples at low velocities. Here, we present a …

Over the past decade, and particularly the past five years, a quiet revolution has been
building at the border between atomic physics and experimental quantum chemistry. The …

Experiments with cold molecules usually begin with a molecular source. We describe the
construction and characteristics of a cryogenic buffer gas source of CaF molecules. The …

Precise control over the translational motion of atoms and molecules is important for a large
range of scientific and industrial processes. Applications range from surface growth and …

Reaching high densities is a key step toward cold-collision experiments with polyatomic
molecules. We use a cryofuge to load up to 2× 10 7 CH 3 F molecules into a boxlike electric …

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A highly sensitive, general, and preferably nondestructive technique to detect polar
molecules would greatly advance a number of fields, in particular quantum science with cold …