Trapped Radioactive Isotopes:  icro-laboratories for fundamental Physics EDM in ground state (I=1/2) H = -(d E + μ B) · I/I m I = 1/2 m I = -1/2 2ω12ω1.

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Trapped Radioactive Isotopes:  icro-laboratories for fundamental Physics EDM in ground state (I=1/2) H = -(d E + μ B) · I/I m I = 1/2 m I = -1/2 2ω12ω1 2ω22ω2 d = e cm, E = 100 kV/cm,  = 15 *10 -6 rad/s  parallel anti-parallel d =  I e h 2 m c Electric Dipole Moment: Precession Frequency:  = d · E / h EBEB ω1ω1 ω2ω2

Trapped Radioactive Isotopes:  icro-laboratories for fundamental Physics Laser cooling leaky systems: Barium S. De et al., Phys. Rev. A 79, (R) (2009) 1S01S0 1P11P1 1D21D2 3D3D D13D1 1 Multiple repump transitions Efficient capture from atomic beam (>1%) Radium similar level scheme. Laser cooling approach transferable

Trapped Radioactive Isotopes:  icro-laboratories for fundamental Physics Intrinsic sensitivity Radium Octupole deformation for some isotopes ( 225 Ra) enhancement nm 7s 2 1 S 0 7s7p 1 P 1 7s7p 3 P 7s6d 1 D 2 7s6d 3 D nm EDM Enhancement over 199 Hg ~ Radium Level Scheme

Trapped Radioactive Isotopes:  icro-laboratories for fundamental Physics 225 Ra 7s 2 1 S 0 _ 7s7p 1 P 1 Strong transition for efficient laser cooling Reference line in 130 Te 2 at cm Te 2 F = 1/2 - F = 3/2 Hyperfine Structure 4198(4) MHz nm 7s 2 1 S 0 7s7p 1 P 1 7s7p 3 P 7s6d 1 D 2 7s6d 3 D nm

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