Masatoshi Chikamori

Search for electric dipole moment in 129Xe atom using a nuclear spin oscillator

We aim to measure the electric dipole moment (EDM) of a diamagnetic atom 129Xe using an optical-detection nuclear spin maser technique. The relation of EDM in a diamagnetic atom to nuclear Schiff moment and fundamental sources generating it is discussed, and the present status for the development of our experimental setup is presented.

Development of co-located 129 Xe and 131 Xe nuclear spin masers with external feedback scheme

We report on the operation of co-located Xe and Xe nuclear spin masers with an external feedback scheme, and discuss the use of Xe as a comagnetometer in measurements of the Xe spin precession frequency. By applying a correction based on the observed change in the Xe frequency, the frequency instability due to magnetic field and cell temperature drifts are eliminated by two orders of magnitude. The frequency precision of 6.2 μHz is obtained for a 10 s averaging time, suggesting the possibility of future improvement to ≈ 1 nHz by improving the signal-to-noise ratio of the observation.

Development Of 131Xe Co-magnetometry For Xe Atomic EDM Search

Co-magnetometry enables the elimination of systematic errors arising from the long-term drift in the magnetic field, and is essential for a precision measurement of spin precession frequency in experiments searching for electric dipole moment (EDM).

Search for an Electric Dipole Moment in 129Xe Atom with Nuclear Spin Oscillator Technique

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Low-frequency 129Xe nuclear spin oscillator with optical spin detection

Xe nuclear spin maser shows great promise as a co-magnetometer in a Xe EDM experiment, because the systematic error originating from the Xe-Rb interaction, which virtually limits the sensitivity in a case of a

Development of NMOR magnetometer for spin-maser EDM experiment

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Active nuclear spin maser oscillation with double cell

He co-magnetometer, will be cancelled out. The performance of a cell which contains both

Search for electric dipole moment in 129Xe atom using active nuclear spin maser

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Nuclear spin maser and experimental search for 129Xe atomic EDM

Xe and

Frequency characteristics of nuclear spin oscillator with an artificial feedback toward search for 129Xe atomic electric dipole moment

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