We derive an exact closed formula for the fluorescence recovery curve measured in fluorescence photobleaching recovery experiments employing uniform circular laser beams. In contrast to the expression used currently, this result is very simple and free of mathematical drawbacks, thus facilitating the quantitative analysis of experimental data.

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No abstract

Ion-ion correlation functions of a 5MNaC1-SPC water model were calculated by molecular dynamics and Monte Carlo simulations. No paired anions were found in contradiction with the extended reference-interaction site model theory predicting C1-C1 pairs for the same model. In order to check for a possible water model dependence the transferable interacting point sites model was also considered. Calculations for a 5 M solution using molecular dynamics and for a single chloride pair in water using constrained molecular dynamics again did not show the formation of anion pairs in contact.