Proposed search for an electric-dipole moment using laser-cooled
171Yb atoms |
| |
Authors: | Email author" target="_blank">V?NatarajanEmail author |
| |
Institution: | (1) Department of Physics, Indian Institute of Science, Bangalore, 560 012, India |
| |
Abstract: | We propose an experiment to search for a
permanent atomic electric-dipole moment (EDM) using
laser-cooled 171Yb atoms launched in an atomic
fountain. A uniform B field sets the quantization axis,
and the Ramsey separated-oscillatory-fields method is used
to measure the Zeeman precession frequency of the atoms.
Laser beams of appropriate polarization are used for
preparation and detection in a given magnetic sublevel. The
signature of an EDM is a shift in the Ramsey resonance
correlated with application of a large E field. The
precision is expected to be at least 20 times better than
current limits because the use of a cold atomic beam allows
application of E field 10 times larger than in a vapor
cell, and the interaction time with the E field is 200
times larger compared to a thermal beam. The leading source
of systematic error in beam experiments, the
×/c motional magnetic field, is reduced
considerably because of the near-perfect reversal of
velocity between up and down trajectories through the
E-field region. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|