Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 43: Struktur und Dynamik von Kernen

HK 43.7: Vortrag

Donnerstag, 22. März 2012, 18:15–18:30, P 4

Collinear Laser Spectroscopy of Potassium Isotopes Beyond the N=28 Shell Closure — •Kim Kreim — Max-Planck-Institut für Kernphysik, Heidelberg, Germany

Thanks to a newly developed light collection region for the collinear laser spectroscopy beam line at ISOLDE/CERN, we have successfully measured the hyperfine structures and isotope shifts from N=19 to N=32 (^{38,39,42,44,46,47,48,48,50,51}K). From these we extracted spins, magnetic moments and changes in root mean square charge radii δ⟨r²⟩.

These nuclear observables provide information about the evolution of the proton sd-orbits as the neutron p_3/2 orbit is being filled towards N=32. A clear shell effect is observed in δ⟨r²⟩ at N=28.

The measured spins, magnetic monents and δ⟨r²⟩ will be presented.