Absolute total elastic cross sections for O2-rare gases scattering

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Abstract
Absolute total elastic cross sections for collisions of O2 with He, Ne, Ar, Kr, Xe have been measured in the velocity range from 0·4 to 2·4 km s-1. Except in the O2-He system, all the cross sections show a glory structure, and the van der Waals constants, C 6, have been obtained from the average ∼ν-2/5 dependence. Total cross sections have been well reproduced by some usual spherically symmetric potential models. Detailed information on the spherical portion of the interaction potential, in the range of the limiting impact parameters, have been extracted.