Electronic spectroscopy of metal terminated carbon chains

The new experimental setup for laser induced fluorescence spectroscopy (LIF) in a gas phase was design. Electronic transitions of the linear MgC4H MgC6H and MgC4D radicals and triangular AlC2 radical have been observed. The species were prepared in a supersonic expansion by ablation of magnesium or aluminum rod in the presence of acetylene, diacetylene, or methane gas. The transitions were recorded in the 415 - 475 nm region and assigned based on previously reported mass-selective resonance enhanced ionization spectra and the rotational structure. Astrophysical implications are briefly addressed