6533b825fe1ef96bd1283099
RESEARCH PRODUCT
Ground-state hyperfine-structure measurements of unstableEu+isotopes in a Paul ion trap
U. GeorgGünter WerthG. MarxCh. ZölchK. EndersEwa StachowskaJerzy Dembczyńskisubject
PhysicsCoupling constantStable isotope ratiochemistry.chemical_elementAtomic and Molecular Physics and OpticsIonchemistryKinetic isotope effectPhysics::Atomic PhysicsIon trapAtomic physicsGround stateEuropiumHyperfine structuredescription
Hyperfine separations in unstable ${\mathrm{Eu}}^{+}$ ions of mass 148, 149, and 150 have been measured in laser-microwave double-resonance experiments in a Paul ion trap. In spite of the small available quantities of the isotopes, the experimental uncertainties are of the order of ${10}^{\ensuremath{-}8}$ or below, which is of the same order as in earlier measurements on stable isotopes of ${\mathrm{Eu}}^{+}.$ Extensive second-order perturbation calculation is required to obtain coupling constants for magnetic-dipole $(A)$ and electric-quadrupole $(B)$ interactions. The uncertainties are a few times ${10}^{\ensuremath{-}7}$ for $A$ and ${10}^{\ensuremath{-}3}$ for $B.$ The experiments are a step in an attempt to determine the differential hyperfine anomaly (Bohr-Weisskopf effect) in a long chain of isotopes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-07-01 | Physical Review A |