Hyperfine Interactions

, Volume 172, Issue 1–3, pp 45–51 | Cite as

Fundamental symmetries studies with cold trapped francium atoms at ISAC

  • 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


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.


Weak interaction Francium Anapole 


32.80.Ys 24.80.+y 


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Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • G. Gwinner
    • 1
  • E. Gomez
    • 2
  • L. A. Orozco
    • 2
  • A. Perez Galvan
    • 2
  • D. Sheng
    • 2
  • Y. Zhao
    • 2
  • G. D. Sprouse
    • 3
  • J. A. Behr
    • 4
  • K. P. Jackson
    • 4
  • M. R. Pearson
    • 4
  • S. Aubin
    • 5
  • V. V. Flambaum
    • 6
  1. 1.Department of Physics & AstronomyUniversity of ManitobaWinnipegCanada
  2. 2.Department of PhysicsUniversity of MarylandCollege ParkUSA
  3. 3.Department of Physics & AstronomyStony Brook UniversityStony BrookUSA
  4. 4.TRIUMFVancouverCanada
  5. 5.Department of PhysicsCollege of William and MaryWilliamsburgUSA
  6. 6.School of PhysicsUniversity of New South WalesSydneyAustralia

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