Hamburg 2009 – scientific programme

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A: Fachverband Atomphysik

A 15: Poster I

A 15.16: Poster

Tuesday, March 3, 2009, 16:30–19:00, VMP 9 Poster

Fundamental symmetries in ²¹Na decay — D.J. van der Hoek, R. Hoekstra, K. Jungmann, •W.L. Kruithof, C.J.G. Onderwater, M. Sohani, L. Willmann, and H.W. Wilschut — KVI, University of Groningen, Groningen, The Netherlands

The β-ν correlations in β-decay allows searching for contributions that go beyond the V-A description of the Standard Model for the electroweak interaction. We are developing an experimental setup to measure correlations in the β-decay of ²¹Na. By trapping the radioactive atoms, the recoiling nucleus (kinetic energy <230 eV) can be measured in a reaction microscope in coincidence with the emitted β particle. The first step is to study β-ν correlations that allows to set limits on scalar and tensor contributions. By polarizing the parent nucleus it becomes possible to search for time reversal violation. The production and trapping of ²¹Na has been accomplished. Details of the setup with a two laser system and the status of this phase of the program will be described.