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RESEARCH PRODUCT
Spins and Magnetic Moments ofK49andK51: Establishing the1/2+and3/2+Level Ordering BeyondN=28
R. F. Garcia RuizH. HeylenMagda KowalskaR. SánchezYutaka UtsunoMustafa RajabaliTakaharu OtsukaGerda NeyensKlaus BlaumMark BissellWilfried NörtershäuserK. KreimB. A. BrownJ. PapugaRainer NeugartDeyan T. YordanovM. De Rydtsubject
PhysicsCondensed matter physicsMagnetic momentSpins010308 nuclear & particles physicsSHELL modelMagnetic monopoleGeneral Physics and Astronomy01 natural sciences0103 physical sciences010306 general physicsSpectroscopyNuclear theoryHyperfine structureSpin-½description
The ground-state spins and magnetic moments of $^{49,51}\mathrm{K}$ have been measured using bunched-beam high-resolution collinear laser spectroscopy at ISOLDE CERN. For $^{49}\mathrm{K}$ a ground-state spin $I=1/2$ was firmly established. The observed hyperfine structure of $^{51}\mathrm{K}$ requires a spin $Ig1/2$ and strongly suggests $I=3/2$. From its magnetic moment $\ensuremath{\mu}(^{51}\mathrm{K})=+0.5129(22){\ensuremath{\mu}}_{N}$ a spin-parity ${I}^{\ensuremath{\pi}}=3/{2}^{+}$ with a dominant $\ensuremath{\pi}1{d}_{3/2}^{\ensuremath{-}1}$ hole configuration was deduced. This establishes for the first time the reinversion of the single-particle levels and illustrates the prominent role of the residual monopole interaction for single-particle levels and shell evolution.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-04-23 | Physical Review Letters |