Workshop on Cold Rydberg Chemistry

Session

Spectroscopy & Dynamics

4

23 Nov 2021, 19:00

31. Spectroscopy and dynamics of an ion within a Rydberg-electron orbit

Matthieu Génévriez (Université catholique de Louvain)

23/11/2021, 19:00

Invited

Atoms and molecules excited to a Rydberg state possess one electron residing predominantly far away from the ion core. For sufficiently large values of the principal and/or orbital-angular-momentum quantum numbers of the Rydberg electron, the ion core can be considered as isolated from the Rydberg electron. Its structure and dynamics are, to a good approximation, the same as the bare ion. This...

32. Quantum defects for molecular Rydberg states and precision spectroscopy of H$_2^+$

Maximilian Beyer (VU Amsterdam)

23/11/2021, 19:30

Invited

Precision spectroscopy of high molecular Rydberg states represents a powerful method for the determination of ionization energies and of rovibronic intervals of molecular ions. In this context, the one- and two-electron molecules H$_2^+$ and H$_2$ are particularly attractive because their energy levels can be calculated with extraordinary accuracy, allowing to test molecular quantum...

38. Vibrational autoionization of core-nonpenetrating Rydberg states of NO: Long-range ab initio model and applications to cold ion chemistry​

Timothy Barnum (MIT)

23/11/2021, 20:00

Invited

High orbital angular momentum ( $\ell \geq 3$ ), core-nonpenetrating Rydberg states can be well described by a simplified model in which the Rydberg electron is only weakly perturbed by the long-range electric properties (i.e., multipole moments and polarizabilities) of the ion-core. We have used a long-range model to describe the vibrational autoionization dynamics of high-$\ell$ Rydberg...

41. Effects of weak rotational and vibrational interactions on the lifetimes of long-lived Rydberg states of NO

Matthew Rayment (University College London)

23/11/2021, 20:30

Invited

High Rydberg states of small molecules play an important role in electron-ion recombination in laboratory, atmospheric, and astrophysical plasmas [1-3]. However, until recently laboratory studies of the slow decay dynamics of molecules in these excited states have not been possible [4,5]. Here we describe a unique, state-of-the-art cryogenically cooled chip-based Rydberg-Stark decelerator, and...