6533b821fe1ef96bd127ac4e
RESEARCH PRODUCT
Precision Measurement ofLi11Moments: Influence of Halo Neutrons on theLi9Core
Magdalena KowalskaP. HimpeS. MallionRainer NeugartN. VermeulenD.l. BalabanskiD. BorremansKlaus BlaumP. LievensGerda NeyensDeyan T. Yordanovsubject
PhysicsMagnetic momentProtonIsotopes of lithiumNuclear TheoryNuclear structureGeneral Physics and AstronomyHalo nucleusNuclear physicsQuadrupolePhysics::Accelerator PhysicsNeutronPhysics::Atomic PhysicsHaloAtomic physicsdescription
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)muN, 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-09-25 | Physical Review Letters |