Collisional mixing

Fig. 11.6 Observed (O) (ref. 25) and calculated ( ) (ref. 37) cross sections for the collisional ( mixing of the Na nd states by He, Ne, and Ax. The calculated cross sections are based on the two state model of Olson (from ref. 37).

Although most of the experimental and theoretical work on collisional mixing has been done with the resonance fine-structure substates, several... 

Certain precautions must be taken when interpreting depth profiles obtained by sputter etching, since artefacts can arise. The collision cascade will cause an intermixing of constituents from sections closer to the surface together with those in deeper sections, and vice versa. This collisional mixing results in a broadening of a given compositional profile [103]. 

A. Sasso, W. Demtroder, T. Colbert, C. Wang, W. Ehrlacher, J. Huennekens, Radiative lifetimes, collisional mixing and quenching of the cesium 5 Dy levels. Phys. Rev. A 45, 1670 (1992)... 

When sodium vapor is excited by one of the D-lines, the fluorescence spectrum is known to exhibit another line of an intensity increasing with the efficiency of collisional mixing... 

The effect of collisional mixing/diffusion is incorporated in terms of a model, developed by Savage (1993), in which the diffusion coefficient is written as... 

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