Abstract
The Doppler shift attenuation method was used to deduce lifetimes of levels in 40 Ar and 4�K populated by the reactions 40 Ar(p, n)4�K and 40 Ar(p, p')40 Ar. Spins and mixing ratios in 4�K were also deduced from angular distribution measurements. The target used was solid argon at a temperature of 66 K. Substantial agreement with other recent work has been found. The results are interpreted using a weak coupling calculation and a simple t5 function interaction model.
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