Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 52: Precision spectroscopy of atoms and ions III

Q 52.4: Vortrag

Donnerstag, 15. März 2012, 14:45–15:00, V47.03

Electric Dipole Moments in heavy atomic systems — •Bodhaditya Santra, Umakanth Dammalapati, Klaus Jungmann, and Lorenz Willmann — KVI, University of Groningen, NL

Permanent electric dipole moments (EDMs) violate both discrete symmetries parity (P) and time-reversal (T). Any observation of an EDM at the present stage of sensitivity would imply CP-violation beyond the Standard Model. EDMs in compound systems like nuclei, atoms or molecules can experience enhancements which scale as Z3. Atomic radium will be discussed in comparison to other systems. The particularly sensitivity of radium arises from its nuclear and atomic structure. As a result radium offers the largest known atomic enhancement factors to nuclear and electron EDMs. The enhancement factors are depending on atomic state and are particularly large for metastable D-states. An experimental exploitation requires sources of suitable isotopes, the preparation of laser cooled and trapped samples and a sensitive detection method. These issues will be discussed and with the particular view on the atomic physics aspects of the sample preparation.

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