Abstract
The PAC technique has been applied to study the influence of gas collisions on the 1.98 MeV 2+→0+ angular correlation for18O ions excited and recoiling in helium. A microscopic description of the pressure dependence of the perturbation in terms of collision cross sections has been developed. The data are in order of magnitude agreement with measured charge-exchange cross sections. Competing processe (e.g. spin-flip collisions) with comparable cross sections appear to be excluded.
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Hagemeyer, K., Goldberg, M.B., Kumbartzki, G.J. et al. Hyperfine interactions of highly stripped oxygen ions recoiling in helium. Hyperfine Interact 1, 301–312 (1975). https://doi.org/10.1007/BF01022462
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DOI: https://doi.org/10.1007/BF01022462