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Observation of Spin Flips with a Single Trapped Proton

S. Ulmer, C. C. Rodegheri, K. Blaum, H. Kracke, A. Mooser, W. Quint, and J. Walz
Phys. Rev. Lett. 106, 253001 – Published 20 June 2011
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Abstract

Radio-frequency induced spin transitions of one individual proton are observed. The spin quantum jumps are detected via the continuous Stern-Gerlach effect, which is used in an experiment with a single proton stored in a cryogenic Penning trap. This is an important milestone towards a direct high-precision measurement of the magnetic moment of the proton and a new test of the matter-antimatter symmetry in the baryon sector.

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  • Received 28 February 2011

DOI:https://doi.org/10.1103/PhysRevLett.106.253001

© 2011 American Physical Society

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Not your usual NMR

Published 20 June 2011

Researchers have detected spin flips of a single proton, a first step toward precision measurements of the antiproton’s spin magnetic moment.

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Authors & Affiliations

S. Ulmer1,2,3, C. C. Rodegheri1,2, K. Blaum1,3, H. Kracke2,4, A. Mooser2,4, W. Quint3,5, and J. Walz2,4

  • 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany
  • 2Institut für Physik, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
  • 3Ruprecht Karls-Universität Heidelberg, D-69047 Heidelberg, Germany
  • 4Helmholtz Institut Mainz, D-55099 Mainz, Germany
  • 5GSI—Helmholtzzentrum für Schwerionenforschung, D-64291 Darmstadt, Germany

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Issue

Vol. 106, Iss. 25 — 24 June 2011

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