Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2008-09-18
Phys.Rev.Lett.101:132502,2008
Physics
Nuclear Physics
Nuclear Experiment
4 pages, 4 figures, 1 table
Scientific paper
10.1103/PhysRevLett.101.132502
The electric quadrupole moment and the magnetic moment of the 11Li halo nucleus have been measured with more than an order of magnitude higher precision than before, |Q| = 33.3(5)mb and mu=3.6712(3)mu_N, revealing a 8.8(1.5)% increase of the quadrupole moment relative to that of 9Li. This result is compared to various models that aim at describing the halo properties. In the shell model an increased quadrupole moment points to a significant occupation of the 1d orbits, whereas in a simple halo picture this can be explained by relating the quadrupole moments of the proton distribution to the charge radii. Advanced models so far fail to reproduce simultaneously the trends observed in the radii and quadrupole moments of the lithium isotopes.
Balabanski Dimiter L.
Blaum Klaus
Borremans D.
Himpe P.
Kowalska Magdalena
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