This review provides a comprehensive overview of the applications of helium nanodroplets
in the study of ensembles of atoms and molecules, ie clusters and complexes. These …

Experimental work on cold, trapped metastable noble gases is reviewed. The aspects which
distinguish work with these atoms from the large body of work on cold, trapped atoms in …

Stellar heating causes atmospheres of close-in exoplanets to expand and escape. These
extended atmospheres are difficult to observe because their main spectral signature …

The wave–particle dual nature of light and matter and the fact that the choice of
measurement determines which one of these two seemingly incompatible behaviours we …

In this study, atmospheric nonequilibrium plasmas were generated with six gas species
using a multi-gas plasma jet. Singlet oxygen, OH radicals, H radicals, and NO radicals, in …

A major advance in understanding the behavior of light was to describe the coherence of a
light source by using correlation functions that define the spatio-temporal relationship …

We report a measurement of the radiative lifetime of the F 7/2 2 level of Yb+ 171 that is
coupled to the S 1/2 2 ground state via an electric octupole transition. The radiative lifetime …

We use a novel electrostatic ion storage ring to measure the radiative lifetime of the upper
level in the 3 p 5 P 2 1/2 o→ 3 p 5 P 2 3/2 o spontaneous radiative decay in S-32 to be …

Improvements in both theory and frequency metrology of few-electron systems such as
hydrogen and helium have enabled increasingly sensitive tests of quantum …

We present the first measurement for helium atoms of the tune-out wavelength at which the
atomic polarizability vanishes. We utilize a novel, highly sensitive technique for precisely …