Berlin 2005 – wissenschaftliches Programm

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A: Atomphysik

A 8: Poster HU 1

A 8.5: Poster

Samstag, 5. März 2005, 08:30–18:30, Poster HU

Trapped Radioactive isotopes for testing fundamental Symmetries — •S. De, G.P. Berg, U. Dammalapati, P. Dendooven, O. Dermois, R. Hoekstra, K. Jungmann, C.J.G. Onderwater, A. Rogachevskiy, M. Sohani, R.G.E. Timmermans, E. Traykow, L. Willmann, and H.W. Wilschut — Kernfysisch Versneller Instituut, Zernikelaan 25, 9747 AA Groningen

We have started a research program to investigate fundamental symmetries and interactions. Some short lived radioactive isotopes allow for new sensitive tests of possible violations of these symmetries. In the Standard Model symmetry violation are not forbidden, but rather vanishingly small. However, many extensions to the Standard Model require symmetry violation. A new facility (TRIµP: Trapped Radioactive Isotopes: µ-laboratories for fundamental Physics) to produce isotopes of interest is currently being set up at our institute. In addition we are setting up a laser laboratory spectroscopy and laser cooling and trapping, methods which are indispensible for sensitive experiments. In particular, we want to investigate correlations in the β-decay of trapped ²¹Na or other suitable isotopes. In another approach to study symmetry violations is to search for a permanent electric dipole moment (edm) using radium isotopes. In the preparations for an edm experiment we are currently working on trapping and cooling of barium. The barium level scheme is similar to radium, which allow us to optimize the trapping setup. Current progress and the complementarity of the approach with other activities in both low and high energy experiments will be described.