Collisional studies in cold binary mixtures

Summary form only given. We present a set of experimental results of trap loss rate for the following mixtures: Na-Rb, K-Rb, Na-K, Rb-Cs and Cs-K. The analysis of our data set allows us to conclude that radiative escape is the main loss mechanism and we observed the significant contribution of the double-excited potential (both atoms excited) for the losses on the studied species. We also have applied an adapted Gallagher-Pritchard model to understand the importance of the reduced mass and the trap depth.