1 / 4

EDM in ground state (I=1/2)

Electric Dipole Moment:. e h 2 m c. d =  I. EDM in ground state (I=1/2). H = -( d E + μ B ) · I/ I. parallel. anti-parallel. m I = 1/2. B. E. B. E. 2 ω 1. 2 ω 2. m I = -1/2. ω 1. ω 2. Precession Frequency:.  = d · E / h.

tyrad
Download Presentation

EDM in ground state (I=1/2)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Electric Dipole Moment: e h 2 m c d =  I EDM in ground state (I=1/2) H = -(d E+ μB) ·I/I parallel anti-parallel mI = 1/2 B E B E 2ω1 2ω2 mI = -1/2 ω1 ω2 Precession Frequency:  = d · E / h d = 10-26 e cm, E = 100 kV/cm,  w = 15 *10-6 rad/s

  2. 3D1 1P1 1D2 l 3 2 1 1 3D ● MOT signal ● Doppler-free beam signal /s] 150 6 [10 1S0 100 Rate 50 X 100 0 -80 -60 -40 -20 0 20 Detuning @ l1 [MHz] Laser cooling leaky systems: Barium Multiple repump transitions Efficient capture from atomic beam (>1%) Radium similar level scheme. Laser cooling approach transferable S. De et al., Phys. Rev. A 79 , 041402(R) (2009)

  3. Intrinsic sensitivity Radium 7s7p 1P1 EDM Enhancement over 199Hg ~ 40000 2 1 0 7s6d 1D2 3 2 1 7s6d 3D 7s7p 3P 482.7 nm 714.3 nm Octupole deformation for some isotopes (225Ra) enhancement 50-500 7s2 1S0 Radium Level Scheme

  4. 225Ra 7s21S0 _ 7s7p 1P1 Strong transition for efficient laser cooling 7s7p 1P1 Hyperfine Structure 4198(4) MHz F = 1/2 - F = 3/2 F = 1/2 - F = 3/2 2 1 0 7s6d 1D2 3 2 1 7s6d 3D 7s7p 3P 130Te2 130Te2 482.7 nm 714.3 nm Reference line in 130Te2 at 20715.4777 cm-1 7s2 1S0

More Related