Adsorption effects in light-induced drift |
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Affiliation: | Huygens Laboratory, University of Leiden, P.O. Box 9504, 2300 RA Leiden, The Netherlands;Physics Laboratory, University of Utrecht, P.O. Box 80 000, 3508 TA Utrecht, The Netherlands |
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Abstract: | We describe the effect of light-induced drift, while allowing for adsorption of the active atoms on the wall of the cell. Assuming a rapid rate of adsorption and desorption, we express this effect by a modification of the diffusion equation for the volume density in the boundary layer near the wall. Explicit solutions are discussed in opposite special cases, corresponding to a large or a small mean free path of the active atoms. |
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