Precise measurements of correlations in nuclear β decays are currently employed to probe the Standard Model. When the β particle and recoiling daughter ion are detected in coincidence, these measurements further allow the observation of the ion charge-state distribution which results from the atomic shakeoff process induced by the nuclear decay. This is of great interest for fundamental atomic physics. This paper presents the results obtained at GANIL by means of LPCTrap experiments with ~6He~(1+), ~(35)Ar~(1+) and ~(19)Ne~(1+) ions. Comparison with theoretical values is also presented and suggests further investigations.
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