Papers › A Ramsey apparatus for proton spins in flowing water

A Ramsey apparatus for proton spins in flowing water

31 Mar 2023arXiv:2303.18108links table onlyarchive 2025-07-28

Ivo Schulthess, Anastasio Fratangelo, Patrick Hautle, Philipp Heil, Gjon Markaj, Marc Persoz, Ciro Pistillo, Jacob Thorne, Florian M. Piegsa

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We present an apparatus that applies Ramsey's method of separated oscillatory fields to proton spins in water molecules. The setup consists of a water circuit, a spin polarizer, a magnetically shielded interaction region with various radio frequency elements, and a nuclear magnetic resonance system to measure the spin polarization. We show that this apparatus can be used for Rabi resonance measurements and to investigate magnetic and pseudomagnetic field effects in Ramsey-type precision measurements with a sensitivity below 100 pT.

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