Speaker
Description
Disulfur, S2, is a reactive intermediate known to be important in the atmosphere of Jovian planets. Whereas the single ionization valence photoelectron spectrum of S2 is known from the early work of Dyke and coworkers, revealing its double ionization electron spectrum remained a challenge for a long time. Using time-of-flight multiple electron and ion coincidence techniques, in combination with a helium gas discharge lamp and synchrotron radiation, we investigated the double ionization electron spectrum and fragmentation dynamics of S2. The results obtained are compared with detailed calculations performed with highly correlated ab initio methods, such as CASSCF followed by MRCI for the electronic structure and potential energy curves of S2, and RCCSD(T) for total energies and dissociation limits.
