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First observation of the ν9/2[404] orbital in the A ∼ 100 mass region (2003)

Urban, W. ; Pinston, J.A. ; Rzaca-Urban, T. ; [weitere]

Springer

The European physical journal 16 (2003), S. 11-15

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ISSN: 1434-601X

Schlagwort(e): PACS. 23.20.Lv Gamma transitions and level energies – 21.60.Cs Shell model – 25.85.Ca Spontaneous fission – 27.60.+j 90 ⩽ A ⩽ 149

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract: A new band, populated by the spontaneous fission of 248Cm and studied by means of prompt γ-ray spectroscopy using the EUROGAM2 array, was observed in 99Zr. The 1038.8 keV band head with a half-life T 1/2 = 54(10) ns is interpreted as a K-isomer, corresponding to the 9/2[404] neutron-hole excitation. It is the first observation of this orbital in the mass A ∼ 100 region. The quadrupole moment, Q 0 = 3.9(3) eb deduced for the new band indicates a large deformation of β = 0.41, which is produced by a specific shape-coexistence mechanism, known in other regions and now found in the A ∼ 100 nuclei.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1140/epja/i2002-10104-y

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