Fundamental symmetries studies with cold trapped francium atoms at ISAC |
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| Authors: | G Gwinner E Gomez L A Orozco A Perez Galvan D Sheng Y Zhao G D Sprouse J A Behr K P Jackson M R Pearson S Aubin V V Flambaum |
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| Institution: | (1) Department of Physics & Astronomy, University of Manitoba, Winnipeg, Canada;(2) Department of Physics, University of Maryland, College Park, MD, USA;(3) Department of Physics & Astronomy, Stony Brook University, Stony Brook, NY, USA;(4) TRIUMF, Vancouver, BC, Canada;(5) Department of Physics, College of William and Mary, Williamsburg, VA, USA;(6) School of Physics, University of New South Wales, Sydney, NSW, Australia |
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| Abstract: | Francium combines a heavy nucleus (Z = 87) with the simple atomic structure of alkalis and is a very promising candidate for precision tests of fundamental symmetries
such as atomic parity non-conservation measurements. Fr has no stable isotopes, and the ISAC radioactive beam facility at
TRIUMF, equipped with an actinide target, promises to provide record quantities of Fr atoms, up to 1010/s for some isotopes. We discuss our plans for a Fr on-line laser trapping facility at ISAC and experiments with samples of
cold Fr atoms. We outline our plans for a measurement of the nuclear anapole moment – a parity non-conserving, time-reversal
conserving moment that arises from weak interactions between nucleons – in a chain of Fr isotopes. Its measurement is a unique
probe for neutral weak interactions inside the nucleus.
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| Keywords: | Weak interaction Francium Anapole |
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