“…The lifetime for Rb (14 2D), the state of interest to the present work, had been also earlier calculated, within Coulomb approximation method, by Gounand [9]. Experimentally determined cross sections for depopulation of Rb(n 2D3) states induced by collisions with ground-state Rb atoms are available for n ranging from 5 to 15, with an exception of n = 14 [7,[10][11][12][13][14][15][16][17]. In experiments involving different procedures, cross sections for different collisional depopulation processes were obtained: the ones for mixing between the doublet components (cross section am ;.)…”