Journal of Physical Chemistry B, Vol.112, No.50, 16182-16192, 2008
Spectroscopy of Jet-Cooled Bi-3
A resonant two-photon ionization spectroscopic study of jet-cooled Bi-3 has identified two band systems in the molecule in the 9600-10 600 and 15 250-16 050 cm(-1) range. The latter of these has been previously observed in matrix isolation spectroscopy and tentatively attributed to Bi-4; the mass-resolved work presented here reassigns it to Bi-3. A review of all previously observed electronic states is presented, and it is argued that-the new band system lying in the range 9600-10 600 cm(-1) corresponds to the spin-forbidden (A) over tilde' (4)A(1)" <-(X-1) over tilde E-2" (E-1/2 component) band system.