ROTATIONAL ANALYSES AND ANGULAR-MOMENTUM ASSIGNMENTS OF [PI(3 2)(2)]4D RYDBERG STATES OF BR-2/

Rotational structures and angular momenta of the two observed [(II3/2) -I-2]4d gerade Rydberg states of bromine in the region 68 800-72 000 c m(-1) have been studied by high resolution resonance enhanced (2+1) mu ltiphoton ionization spectroscopy. The rotational constants have been obtained and the angular momenta of the two [(II3/2)-I-2]4d series hav e been assigned for the first time. These results are further determin ed and confirmed by computational spectral simulations. The angular mo menta of the two observed [(II3/2)-I-2]4d Rydberg states are concluded to be Omega=1. Comparison is also made for these two Rydberg states.