Time resolved detection of the S(¹D) product of the UV induced dissociation of CS₂

The products formed following the photodissociation of UV (200 nm) excited CS2 are monitored in a time resolved photoelectron spectroscopy experiment using femtosecond XUV (21.5 eV) photons. By spectrally resolving electrons, we identify separate bands related to + h? ? S(1D) CS and S(3P) dissociation channels, which show different appearance rise times. measurements that there is no delay product contrary results Horio et al. [J. Chem. Phys. 147, 013932 (2017)]. Analysis yield associated with atomic allows us obtain S(3P)/S(1D) branching ratio rate constants intersystem crossing rather than effective lifetime observed through measurement state populations alone.