A highly-deformed, excited band has recently been observed in Kr-77 in an e
xperiment using GAMMASPHERE with the MICROBALL, and a rather analogous band
has been found in the isotone Se-75 using the Pitt-FSU array. They apear t
o be somewhat intermediate between normal and superdeformed bands and repre
sent the deformation-driving effects of the [431]1/2 intruder orbital.