Parts | Days | Selection | Search | Updates | Downloads | Help

SYIN: Symposium Interactions with Negatively Charged Molecules

SYIN 1: Symposium Interactions with Negatively Charged Molecules (SYIN)

SYIN 1.4: Invited Talk

Thursday, March 5, 2026, 12:30–13:00, RW 1

Photodetachment spectroscopy and reactions of negative molecular ions — •Roland Wester — Institut für Ionenphysik und Angewandte Physik, Universität Innsbruck, Austria

Negative molecular ions are interesting objects of study as fundamental building blocks of matter. Photodetachment experiments are powerful tools to study the electronic structure of anion and neutral, the long-range electron-molecule interaction, and the bound rovibrational levels of the negative ions. Using cryogenic radiofrequency multipole ion traps we have investigated a range systems, have determined electron affinities, studied dipole-bound states, and investigated optical pumping and inelastic collisions. The trapped negative ions are also well suited to study inelastic scattering and reaction processes, which are important processes in interstellar molecular clouds. Several examples will be presented.

Keywords: molecular anions; photodetachment spectroscopy; ion-molecule reactions; radiofrequency multipole ion traps