Abstract
Ultra-low-mass axions are a viable dark matter candidate and may form a coherently oscillating classical field. Nuclear spins in experiments on Earth might couple to this oscillating axion dark-matter field, when propagating on Earth's trajectory through our Galaxy. This spin coupling resembles an oscillating pseudo-magnetic field which modulates the spin precession of nuclear spins. Here we report on the null result of a demonstration experiment searching for a frequency modulation of the free spin-precession signal of 199Hg in a 1 μT magnetic field. Our search covers the axion mass range 10-16eV ≲ ma ≲ 10-13eV and achieves a peak sensitivity to the axion-nucleon coupling of gaNN ∼ 3.5
Original language | English |
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Article number | 058 |
Journal | SciPost Physics |
Volume | 15 |
Issue number | 2 |
DOIs | |
State | Published - Aug 2023 |
Bibliographical note
Publisher Copyright:© The Author(s) 2023.
ASJC Scopus subject areas
- General Physics and Astronomy