Hyperfine anomaly of Be isotopes and anomalous large anomaly in11Be

Precision laser spectroscopy of Be isotopes and prospects for SLOWRI facility at RIKEN

“…From these two isotope shifts, we can determine the nuclear charge radii and the nuclear magnetization radii. It should be noted that 11 Be is considered to have a 10 Be core and a valence halo neutron. In the naive picture shown in Fig.…”

“…The laser radiation was used for cooling, optical pumping, and Fig. 2 Microwave resonance spectra of 7 Be + (a, b) and 11 Be + (c) and optical transition spectrum of 10 Be + (d)…”

“…The goal of these hyperfine structure measurements is to determine the magnetization radius through the Bohr-Weisskopf effect [10][11][12][13]. For this purpose, we need to know the nuclear magnetic moments (or g-factors) with high accuracies which should independently be determined from the hyperfine constants.…”

“…The charge radii of the two-neutron halo nucleus 6 He and the four-neutron halo nucleus 8 He were determined at Argonne National Laboratory in a magneto-optical trap [6,7]. The charge radius of the two-neutron halo nucleus 11 Li was determined by two-photon spectroscopy at TRIUMF by the ToPLis group from GSI [8]. Furthermore, the first measurement for the charge radii of Be isotopes by collinear laser spectroscopy at ISOLDE was reported recently [9].…”

Developments at the SLOWRI facility at RIKEN: precision optical spectroscopy of 7,9,10,11Be+ ions

“…The goal of these hyperfine structure measurements is to determine the magnetization radius through the Bohr-Weisskopf effect [17][18][19][20]. For this purpose, we need to know the nuclear magnetic moments (or g-factors) with high accuracies which should independently be determined from the hyperfine constants.…”