Abstract
The measurement and comparison of the magnetic moment (or g-factor) of the proton and antiproton provide a stringent experimental test of the CPT-theorem in the baryonic sector (Quint et al., Nucl Instrum Methods Phys Res, B 214:207, 2004). We present an experimental setup for the first direct high-precision measurement of the g-factor of a single isolated proton in a double cylindrical Penning trap. The application of the continuous Stern-Gerlach effect to detect quantum jumps between the two spin states of the particle, together with a novel trap design specially developed for this purpose, offers the possibility of measuring the magnetic moment not only of a single proton but also of a single antiproton. It is aimed to achieve a relative uncertainty of 10 − 9 or better. Preliminary results including mass spectra of particle clouds as well as single proton preparation and detection are shown.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Quint, W., Alonso, J., Djekic, S., Kluge, H.J., Stahl, S., Valenzuela, T., Verdu, J., Vogel, M., Werth, G.: Nucl. Instrum. Methods Phys. Res., B 214, 207 (2004)
Frisch, R., Stern, O.: Zeitsch. Phys. A 85, 4 (1933)
Bloch, F., Hansen, W.W., Packard, M.: Phys. Rev. 70, 474 (1946)
Collington, D.J., Dellis, A.N., Sanders, H., Turberfield, K.C.: Phys. Rev. 99, 1622 (1955)
Winkler, P.F., Kleppner, D., Myint, T., Walther, F.G.: Phys. Rev., A 5, 83 (1972)
Kreissl, A., Hancock, A.D., Koch, H., Köhler, T., Poth, H., Raich, U., Rohmann, D., Wolf, A.: Zeitsch. Phys., C 37, 557 (1988)
Bakalov, D., Widmann, E.: Phys. Rev., A 76, 012512 (2007)
Verdu, J., Kreim, S., Alonso, J., Blaum, K., Djekic, S., Quint, W., Stahl, S., Ulmer, S., Vogel, M., Walz, J., Werth, G.: Proc. of the LEAP Conference 796, 260 (2005)
Brown, L.S., Gabrielse, G.: Rev. Mod. Phys. 58, 233 (1986)
Gabrielse, G., Haarsma, L., Rolston, S.: Int. J. Mass Spectrom. Ion Process. 88, 319 (1989)
Verdu, J., Kreim, S., Blaum, K., Kracke, H., Quint, W., Ulmer, S., Walz, J.: New J. Phys. 10, 103009 (2008)
Häffner, H., Beier, T., Djekic, S., Hermanspahn, N., Kluge, H.J., Quint, W., Stahl, S., Verdu, J., Valenzuela, T., Werth, G.: Eur. Phys. J., D 22, 163 (2003)
Dehmelt, H.G., Walls, F.L.: Phys. Rev. Lett. 21, 127 (1968)
Brown, L.S., Gabrielse, G.: Phys. Rev., A 25, 2423 (1982)
Dehmelt, H.G.: Proc. Natl. Acad. Sci. USA 83, 2291 (1986)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Open Access This is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (https://creativecommons.org/licenses/by-nc/2.0), which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
About this article
Cite this article
Rodegheri, C.C., Blaum, K., Kracke, H. et al. Developments for the direct determination of the g-factor of a single proton in a Penning trap. Hyperfine Interact 194, 93–98 (2009). https://doi.org/10.1007/s10751-009-0035-4
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10751-009-0035-4