| Начало > Isotope shift measurements in the 2s(1/2) -> 2p(3/2) transition of Be+ and extraction of the nuclear charge radii for Be-7,Be-10,Be-11 |
| Article | |
| Title | Isotope shift measurements in the 2s(1/2) -> 2p(3/2) transition of Be+ and extraction of the nuclear charge radii for Be-7,Be-10,Be-11 |
| Author(s) | Zakova, M (Mainz U., Inst. Kernchem.) ; Krieger, A (Mainz U., Inst. Kernchem.) ; Yordanov, D T (Heidelberg, Max Planck Inst.) ; Lochmann, M (Mainz U., Inst. Kernchem.) ; Drake, G W F (Windsor U.) ; Yan, Z-C (New Brunswick U.) ; Neugart, R (Mainz U., Inst. Phys.) ; Kowalska, M (CERN) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Andjelkovic, Z (Mainz U., Inst. Kernchem.) ; Kraemer, J (Mainz U., Inst. Kernchem.) ; Bissell, M L ( Leuven U.) ; Neff, T (Darmstadt, GSI) ; Schmidt-Kaler, F (Ulm U.) ; Sanchez, R (Mainz U., Inst. Kernchem. ; Darmstadt, GSI) ; Noertershaeuser, W (Mainz U., Inst. Kernchem. ; Darmstadt, GSI) ; Geppert, Ch (Darmstadt, GSI ; Tubingen U.) ; Tiedemann, D (Mainz U., Inst. Kernchem.) ; Zimmermann, C (Tubingen U.) |
| Publication | 2010 |
| In: | J. Phys. G 37 (2010) 055107 |
| DOI | 10.1088/0954-3899/37/5/055107 |
| Subject category | Nuclear Physics - Experiment |
| Abstract | We have performed isotope shift measurements in the 2s(1/2) -> 2p(3/2) transition of Be+ ions using advanced collinear laser spectroscopy with two counter-propagating laser beams. Measurements involving a frequency comb for laser stabilization and absolute frequency determination allowed us to determine the isotope shifts with an accuracy of 2 MHz. From the isotope shifts between Be-9 and Be-7,Be-10,Be-11, high-accuracy mass shift calculations and the charge radius of the reference isotope Be-9 we determined nuclear charge radii for the isotopes Be-7,Be-10 and the one-neutron halo nucleus Be-11. The results are compared to nuclear-structure calculations using the fermionic molecular dynamics model which reproduce well the general trend of the radii. Decreasing charge radii from Be-7 to Be-10 are explained by the cluster structure of the nuclei. The increase from Be-10 to Be-11 is mainly caused by the halo neutron by which the Be-10 core moves relative to the center of mass. Polarization of the Be-10 core has only a small influence on the charge radius. |