Active nuclear spin maser oscillation with double cell

¹ Department of Physics, Tokyo Institute of Technology, 2-12-1 Oh-okayama, Meguro, Tokyo 152-8551, Japan
² Department of Physics, University of Winnipeg, 515 Portage Avenue, Winnipeg, Manitoba, Canada
³ Cyclotron and Radioisotope Center, Tohoku University, 6-3 Aoba, Aramaki, Aoba, Sendai 980-8578, Japan
⁴ Department of Physics, Tokyo Metropolitan University, 1-1 Minami-Ohsawa, Hachioji, Tokyo 192-0397, Japan
⁵ Research Core for Extreme Quantum World, Okayama University, 3-1-1 Tsushimanaka, Kita, Okayama 700-8530, Japan
⁶ Institute of Material Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
⁷ RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
⁸ R-GIRO, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga 525-8577, Japan

^a e-mail: hikoeri@th.phys.titech.ac.jp

Published online: 20 March 2014

Abstract

Uncertainty in the frequency precision of the planned experiment to search for a ¹²⁹Xe atomic electric dipole moment is dominated by drifts in the frequency shift due to contact interaction of ¹²⁹Xe with polarized Rb valence electrons. In order to suppress the frequency shift, a double-cell geometry has been adopted for the confinement of ¹²⁹Xe gas. A new process has been identified to take part in the optical detection of spin precession. The parameters controlling the oscillation of the maser in this new double-cell arrangement were optimized. As a result, the frequency shift has been reduced by a factor of 10 or more from the former single-cell geometry.