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Hyperfine Structure Constant of the Neutron Halo Nucleus Be+11

A. Takamine, M. Wada, K. Okada, T. Sonoda, P. Schury, T. Nakamura, Y. Kanai, T. Kubo, I. Katayama, S. Ohtani, H. Wollnik, and H. A. Schuessler
Phys. Rev. Lett. 112, 162502 – Published 24 April 2014

Abstract

The hyperfine splittings of ground state Be+11 have been measured precisely by laser-microwave double resonance spectroscopy for trapped and laser cooled beryllium ions. The ions were produced at relativistic energies and subsequently slowed down and trapped at mK temperatures. The magnetic hyperfine structure constant of Be+11 was determined to be A11=2677.302988(72)  MHz from the measurements of the mFmF=00 field independent transition. This measurement provides essential data for the study of the distribution of the halo neutron in the single neutron halo nucleus Be11 through the Bohr-Weisskopf effect.

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  • Received 18 October 2012

DOI:https://doi.org/10.1103/PhysRevLett.112.162502

© 2014 American Physical Society

Authors & Affiliations

A. Takamine1,*, M. Wada1,†, K. Okada2, T. Sonoda1, P. Schury1, T. Nakamura3, Y. Kanai3, T. Kubo1, I. Katayama4, S. Ohtani5, H. Wollnik6, and H. A. Schuessler7

  • 1Nishina Center for Accelerator Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
  • 2Department of Physics, Sophia University, 7-1 Kioicho, Chiyoda, Tokyo 102-8554, Japan
  • 3Atomic Physics Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
  • 4Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
  • 5Institute for Laser Science (ILS), The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
  • 6Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico 88003, USA
  • 7Department of Physics, Texas A&M University, College Station, Texas 77843, USA

  • *Present address: Department of Physics and Mathematics, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo, Sagamihara, Kanagawa 252-5258, Japan.
  • mw@riken.jp

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Vol. 112, Iss. 16 — 25 April 2014

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