Half-life of sup 10 C

In two separate experiments the half-life of {sup 10}C has been measured to be 19.294{plus minus}0.016 s and 19.300{plus minus}0.041 s. This has resolved the previous disagreement in the literature and gives a final value of 19.290{plus minus}0.012 s when combined with the other, concordant determinations. Only the branching ratio now needs to be remeasured to enable the {ital ft} value of the {sup 10}C superallowed positron decay to be calculated with a precision of 0.1%.