A superdeformed band has been observed for the first time in an Au iso
tope. The reaction used was B-11 + W-186, demonstrating that very ligh
t ions can be used to populate superdeformed (SD) bands at high angula
r momentum. The band is assigned to 191Au. The gamma-ray energies are
at the quarter-point energies of the 192Hg SD band, indicating that it
is ''identical'' to that of 192Hg.