Hannover 2013 – scientific programme
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A: Fachverband Atomphysik
A 20: Poster: Precision spectroscopy of atoms and ions (with Q)
A 20.4: Poster
Tuesday, March 19, 2013, 16:00–18:30, Empore Lichthof
Single Ra+ ion spectroscopy - towards a measurement of Atomic Parity Violation — •Mayerlin Nunez Portela, A. Mohanti, E.A. Dijck, H. Bekker, O. Boell, J. van den Berg, G.S. Giri, K. Jungmann, C.J.G. Onderwater, B. Santra, R.G.E. Timmermans, O.O. Versolato, L.W. Wansbeek, L. Willmann, and H.W. Wilschut — KVI, University of Groningen, Groningen , The Netherlands
The sensitivity of the Atomic Parity Violation (APV) signal grows faster than the third power of the atomic number Z. Ra+ (Z=88)is heaviest alkaline earth ion available. A single trapped Ra+ ion opens a very promising path for a measurement atomic parity violation. One of the experimental challenges is the localization of the ion within a fraction of an optical wavelength. For this the current experiments are focused on trapping and laser cooling of Ba+ ions as a precursor for Ra+. Ba+ ions are trapped and laser cooled in a precision hyperbolic Paul trap. Work towards single Ba+ ion localization and detection is in progress. Recently the hyperfine structure of the 6d2D3/2 states and the isotope shift of the 6d2D3/2-7p2P1/2 transition in the isotopes 209−214Ra+ has been measured [1]in online laser spectroscopy experiments at the KVI AGOR/TRIµP facility. These results are essential for the interpretation of an APV measurement in Ra+. [1] G.S. Giri et al., Phys. Rev. A 84, 020503(R) (2011)