Direct Measurement of the Proton Magnetic Moment
Open accessAbstract
The proton magnetic moment in nuclear magnetons is measured to be ${\ensuremath{\mu}}_{p}/{\ensuremath{\mu}}_{N}\ensuremath{\equiv}g/2=2.792\text{ }846\ifmmode\pm\else\textpm\fi{}0.000\text{ }007$, a 2.5 parts per million uncertainty. The direct determination, using a single proton in a Penning trap, demonstrates the first method that should work as well with an antiproton ($\overline{p}$) as with a proton ($p$). This opens the way to measuring the $\overline{p}$ magnetic moment (whose uncertainty has essentially not been reduced for 20 years) at least ${10}^{3}$ times more precisely.
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Penning traps are a well-established tool for precision spectroscopy with small numbers of ions.
“Penning traps are a well-established tool for precision spectroscopy with small numbers of ions25–28”
From Penning micro-trap for quantum computing (2024) · cites this paper as [28]
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- Authors
- DiSciacca, J., & Gabrielse, G.
- Affiliations
- Harvard University (US)
- ORCID
- Gabrielse, G.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2012-04-10
- Volume
- 108
- Issue
- 15
- Pages
- 153001-153001
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2085605890
- Cited by
- 56
- References
- 19
- Citations by year
- 2025: 1 · 2024: 2 · 2023: 2 · 2021: 3 · 2020: 2 · 2019: 3 · 2018: 2 · 2017: 2 · 2016: 4 · 2015: 5 · 2014: 16 · 2013: 10 · 2012: 3
- FWCI
- 4.89
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Physical Review Letters (publishedVersion, cc-by)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- arXiv (Cornell University)
- Funders
- National Science Foundation
- Air Force Office of Scientific Research
- Topics
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Particle physics theoretical and experimental studies
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Atomic and Molecular Physics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Atomic and Subatomic Physics Research
- Keywords
- proton magnetic moment, nuclear magneton, Penning trap, antiproton magnetic moment, antiprotons, magnetic moment measurement, precision measurement
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