ISOLDE Seminar

Hyperfine Structure Constant of the Neutron Halo Nucleus 11Be+

Name: Hyperfine Structure Constant of the Neutron Halo Nucleus 11Be+
Start: 2015-08-10T11:00:00+02:00
End: 2015-08-10T12:00:00+02:00
Location: CERN

by Hans A. Schuessler (Texas A&M University)

Monday 10 Aug 2015, 11:00 → 12:00 Europe/Zurich

CERN

Description

The hyperfine splitting of ground state 11Be+ has been measured by laser-microwave double resonance spectroscopy for trapped and laser cooled beryllium ions. The single valence neutron of 11Be+ is known to have a large distribution around the core nucleus 10Be. Since a neutron does not have electric charge, optical observation is difficult. However the neutron has a negative magnetic moment and the hyperfine structure constant is sensitive to the nuclear magnetization, which directly indicates this halo neutron distribution. This is known as the Bohr-Weisskopf effect which we measured in precision measurement . PRL 112, 162502 (2014) 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