Magnetic Moment of the Fragmentation Aligned 61Fe(9/2)+ Isomer

Details Magnetic Moment of the Fragmentation Aligned 61Fe(9/2)+ Isomer Magnetic Moment of the Fragmentation Aligned 61Fe(9/2)+ Isomer

2004-04-28

arxiv.org/abs/nucl-ex/0404038v1

Phys.Rev.Lett. 93 (2004) 142503

Physics

Nuclear Physics

Nuclear Experiment

4 figures. Submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.93.142503

We report on the g factor measurement of the isomer in $^{61}Fe$ ($E^{*}=861 keV$). The isomer was produced and spin-aligned via a projectile-fragmentation reaction at intermediate energy, the Time Dependent Perturbed Angular Distribution (TDPAD) method being used for the measurement of the g factor. For the first time, due to significant improvements of the experimental technique, an appreciable residual alignment of the isomer has been observed, allowing a precise determination of its g factor: $g=-0.229(2)$. Comparison of the experimental g factor with shell-model and mean field calculations confirms the $9/2^+$ spin and parity assignments and suggests the onset of deformation due to the intrusion of Nilsson orbitals emerging from the $\nu g_{9/2}$.

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