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The magnetic properties of $^{\rm 177}$Hf and $^{\rm 180}$Hf in the strong coupling deformed model

S. Muto N. J. Stone C. R. Bingham J. R. Stone P. M. Walker G. Audi 1 C. Gaulard 2 U. Köster J. Nikolov K. Nishimura T. Ohtsubo Z. Podolyak L. Risegari 2 G.S. Simpson 3 M. Veskovic W. B. Walters 
1 CSNSM SNO
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière : UMR8609
Abstract : This paper reports NMR measurements of the magnetic dipole moments of two high-K isomers, the 37/2$^-$, 51.4 m, 2740 keV state in $^{\rm 177}$Hf and the 8$^-$, 5.5 h, 1142 keV state in $^{\rm 180}$Hf by the method of on-line nuclear orientation. Also included are results on the angular distributions of gamma transitions in the decay of the $^{\rm 177}$Hf isotope. These yield high precision E2/M1 multipole mixing ratios for transitions in bands built on the 23/2$^+$, 1.1 s, isomer at 1315 keV and on the 9/2$^+$, 0.663 ns, isomer at 321 keV. The new results are discussed in the light of the recently reported finding of systematic dependence of the behavior of the g$_{\rm R}$ parameter upon the quasi-proton and quasi-neutron make up of high-K isomeric states in this region.
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Submitted on : Thursday, April 10, 2014 - 8:18:31 AM
Last modification on : Sunday, June 26, 2022 - 12:01:12 PM

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S. Muto, N. J. Stone, C. R. Bingham, J. R. Stone, P. M. Walker, et al.. The magnetic properties of $^{\rm 177}$Hf and $^{\rm 180}$Hf in the strong coupling deformed model. Physical Review C, American Physical Society, 2014, 89, pp.044309. ⟨10.1103/PhysRevC.89.044309⟩. ⟨in2p3-00976535⟩

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