Broadening of level-crossing signals in the 5 2Psub(3/2) state of rubidium due to resonant collisions

Broadening of three isolated level-crossing signals in the resonance 52Psub(3/2) state of 87Rb due to resonant Rb-Rb collisions is investigated experimentally. The results confirm the interpretation of the experiments on collisional broadening of level-crossing signals in excited Psub(3/2) states of heavy alkali-metal atoms presented in our recent paper. The present work provides also additional experimental evidence that the description of resonant collisional depolarization of the 52Psub(3/2) state of rubidium by the R-3 dipole-dipole potential is very satisfactory. (orig.)