Regular Article – Atomic Physics
Positronium microwave spectroscopy using Ramsey interferometry
Department of Physics and Astronomy, University College London, Gower Street, London, WC1E 6BT, UK
Accepted: 24 June 2022
Published online: 11 July 2022
We describe an experimental arrangement suitable for performing microwave spectroscopy measurements of the positronium (Ps) fine structure using Ramsey interferometry. Simulations are presented concerning the production of energetic Ps atoms from a Xe gas cell, and their subsequent interactions with a pair of waveguides in which coherent microwave radiation fields are applied. We conclude that for realistic experimental parameters, optimized using a Monte Carlo simulation, a gas cell length of 10 cm with a gas pressure of 0.5 Pa and a positron beam energy of 40 eV, count rates on the order of 50 Hz should be possible.
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