The Predissociation Of The 1 (3)Sigma(-)(G) State Of Li-7(2)

The predissociation of the 1(3)Sigma (-)(g) v greater than or equal to 10 levels of Li-7(2) has been observed by pulsed and continuous-wave perturbation-facilitated optical-optical double-resonance spectroscopy (PFOODR). Our ab initio calculation shows that the inner wall of the 1(3)Sigma (-)(g) potential intersects the 1 (3)Pi (g) repulsive potential at internuclear distance R = 2.00 Angstrom. The predissociation is due to a DeltaS = 0, Delta Lambda = +/-1 rotational-electronic interaction with the repulsive 1 (3)Pi (g) state. (C) 2001 Academic Press.