  We report the first observation of photoassociation to the 2(1)Sigma(g)(+)
state of 85Rb2 . We have observed two vibrational levels (v'=98, 99) below the
5s1/2+5p1/2 atomic limit and eleven vibrational levels (v'=102-112) above it.
The photoassociation---and subsequent spontaneous emission---occur
predominantly between 15 and 20 Bohr in a region of internuclear distance best
described as a transition between Hund's case (a) and Hund's case (c) coupling.
The presence of a g-wave shape resonance in the collision of two ground-state
atoms affects the photoassociation rate and lineshape of the J'= 3 and 5
rotational levels.

Atomic Physics