First Measurement of the Atomic Electric Dipole Moment of (225)Ra.

  title={First Measurement of the Atomic Electric Dipole Moment of (225)Ra.},
  author={Richard H. Parker and Matthew R. Dietrich and Mukut R. Kalita and Nathan D. Lemke and Kevin G. Bailey and Michael Bishof and J. P. Greene and Roy J. Holt and Wolfgang Korsch and Z.‐T. Lu and P. Mueller and Terry O'Connor and J. T. Singh},
  journal={Physical review letters},
  volume={114 23},
The radioactive radium-225 ((225)Ra) atom is a favorable case to search for a permanent electric dipole moment. Because of its strong nuclear octupole deformation and large atomic mass, (225)Ra is particularly sensitive to interactions in the nuclear medium that violate both time-reversal symmetry and parity. We have developed a cold-atom technique to study the spin precession of (225)Ra atoms held in an optical dipole trap, and demonstrated the principle of this method by completing the first… 

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