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Journal Articles Physical Review Letters Year : 2004

Magnetic moment of the fragmentation-aligned $^{61}$Fe (9/$2^+$) isomer

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1
G. Georgiev
J.M. Daugas
  • Function : Author
M. Haas
  • Function : Author
G. Neyens
  • Function : Author
R. Astabatyan
  • Function : Author
L.T. Baby
  • Function : Author
D.L. Balabanski
  • Function : Author
G. Bélier
  • Function : Author
D. Borremans
  • Function : Author
F. Chappert
  • Function : Author
M. Girod
  • Function : Author
G. Goldring
  • Function : Author
H. Goutte
  • Function : Author
P. Himpe
  • Function : Author
S. Lukyanov
  • Function : Author
V. Méot
Yu.E. Penionzhkevich
  • Function : Author
M.-G. Porquet
  • Function : Author
O. Roig
  • Function : Author
M. Sawicka
  • Function : Author

Abstract

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 $\nu g_{9/2}$.

Dates and versions

in2p3-00023170 , version 1 (08-10-2004)

Identifiers

Cite

I. Matea, G. Georgiev, J.M. Daugas, M. Haas, G. Neyens, et al.. Magnetic moment of the fragmentation-aligned $^{61}$Fe (9/$2^+$) isomer. Physical Review Letters, 2004, 93, pp.142503-1-142503-4. ⟨10.1103/PhysRevLett.93.142503⟩. ⟨in2p3-00023170⟩
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