Orientational correlation times for a dilute Fokker-Planck fluid

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Abstract
Two recent calculations of orientational correlation times for a dilute Fokker-Planck fluid, one by Evans and Keyes and one by Powles and Rickayzen, have led to differing results. The discrepancy between these results is examined in this paper and resolved in favour of the latter calculation. New expressions for the orientational decay function and its spectrum for this model are also obtained.