Berlin 2005 – scientific programme

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T: Teilchenphysik

T 608: Elektroschwache Wechselwirkung II

T 608.10: Talk

Tuesday, March 8, 2005, 18:45–19:00, TU H3002

Atomic Trapping of Radioactive Isotopes to Study Time Reversal Violation — •H.W. Wilschut, G.P.A. Berg, U. Dammalapati, S. De, P. Dendoven, O. Dermois, R. Hoekstra, K. Jungmann, C.J.G. Onderwater, A. Rogachevskiy, M. Sohani, R.G.E. Timmermans, E. Traykov, and L. Willmann — Kernfysisch Versneller Instituut, Groningen, The Netherlands

We have started a program of multidisciplinary research to study fundamental interactions and symmetries. The basic principle is to use radioactive nuclei as a testing ground for time reversal invariance. The Standard Model does not forbid violation of this symmetry, but the effect is vanishingly small in nuclei and atoms. In radioactive Raadium isotopes are good candidates to search for such an effect by trying to observe an electric dipole moment. β-decay of light isotopes provides an alternative route. Both methods depend on atomic trapping techniques to reach required accuracy. A new facility (TRIµP: Trapped Radioactive Isotopes: µ-laboratories for fundamental Physics) to produce and trap radioactive isotopes is currently under construction at our institute. The first steps in studying the β-decays of ²1Na have been taken. By first attempting to trap Barium the trapping of Radium is pursued. Current progress and the complementarity of the approach with other activities in both low and high energy experiments will be described.