Proposal to the ISOLDE and Neutron Time-of-Flight Committee Measurement of the super-allowed branching ratio of 10 C

We propose to measure the supper-allowed branching ratio of 10 C, the lightest of all nuclei decaying by a 0+ - 0+ transition. The light nuclei have a much stronger impact on limits of physics beyond the standard model than heavier nuclei. We propose a measurement which should reach a precision similar to the two latest measurements, however, with a different method employing a precisely efficiency calibrated germanium detector. As no method exists to greatly improve on previous results, the branching ratio has to be measured with independent methods.