Abstract
Magnetic-field uniformity is of the utmost importance in experiments to measure the electric dipole moment of the neutron. A general parametrization of the magnetic field in terms of harmonic polynomial modes is proposed, going beyond the linear-gradients approximation. We review the main undesirable effects of nonuniformities: depolarization of ultracold neutrons and Larmor frequency shifts of neutrons and mercury atoms. The theoretical predictions for these effects were verified by dedicated measurements with the single-chamber neutron electric-dipole-moment apparatus installed at the Paul Scherrer Institute.
Original language | English |
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Article number | 042112 |
Journal | Physical Review A |
Volume | 99 |
Issue number | 4 |
DOIs | |
State | Published - Apr 15 2019 |
Bibliographical note
Publisher Copyright:© 2019 American Physical Society.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics