Knowledge Bank

The UV-visible fluorescence spectra of Ag and $Ag2$ in rare gas matrices have been investigated, using conventional fluorescence techniques. Both systems show strongly relaxed (red-shifted) fluorescence, indicative of lattice relaxation in the excited states, These lattice relaxation processes lead to photoinduced diffusion and aggregation of Ag atoms and photodissociation of $Ag2$ molecules in rare gas matrices. In addition, internal conversion and energy transfer processes are important in in these systems A qualitative interpretation of the absorption and fluorescence spectra and photoprocesses will be outlined, emphasizing the role of lattice relaxation in the excited ($\mathrm{<mrow\; data-mjx-texclass="ORD">2</mrow>}P$) stats of the entrapped silver atoms.