Investigating Shakeoff Process in Precise Correlation Measurements in Nuclear β Decay

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 6He1+, 35Ar1+ and 19Ne1+ ions. Comparison with theoretical values is also presented and suggests further investigations.