This Review presents electron affinities of atoms and structures of atomic negative ions. The
negative ion properties of many elements in the main groups of the Periodic Table were well …

Antihydrogen atoms with K or sub-K temperature are a powerful tool to precisely probe the
validity of fundamental physics laws and the design of highly sensitive experiments needs …

Computational atomic physics continues to play a crucial role in both increasing the
understanding of fundamental physics (eg, quantum electrodynamics and correlation) and …

Efficient cooling of trapped charged particles is essential to many fundamental physics
experiments,, to high-precision metrology, and to quantum technology,. Until now …

Negative ions are important in many areas of science and technology, eg, in interstellar
chemistry, for accelerator-based radionuclide dating, and in anti-matter research. They are …

One of the most important properties influencing the chemical behavior of an element is the
electron affinity (EA). Among the remaining elements with unknown EA is astatine, where …

The electronic structures of actinide systems are extremely complicated because of strong
electron correlations and relativistic effects. The atomic actinide anion poses even more …

The results of a combined experimental and computational study of the uranium atom are
presented with the aim of determining its electron affinity. Experimentally, the electron affinity …

We report a high-performance transportable microwave frequency standard scheme based
on sympathetically cooled 113 Cd+ ions using 40 Ca+ as coolant ions. A transportable …

We have sympathetically cooled and crystallized 113 Cd+ ions with laser-cooled 40 Ca+
ions, and directly observed the complete large bicrystal structure in a linear Paul trap. The …