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Properties of N=84, even-even nuclei populated in the spontaneous fission of 248Cm (2000)

Korgul, A. ; Urban, W. ; Rząca-Urban, T. ; [weitere]

Springer

The European physical journal 7 (2000), S. 167-176

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ISSN: 1434-601X

Schlagwort(e): PACS: 21.60.Cs Shell model – 23.20.Lv Gamma transitions and level energies – 27.80.+w 190 ≤ A ≤ 219 – 25.70.-z Low and intermediate energy heavy-ion reactions

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract: Excited states in the neutron-rich, N=84 nuclei 134Sn, 136Te and 138Xe, populated in the spontaneous fission of 248Cm, were studied to medium spins using the EUROGAM2 array. OXBASH code calculations support the experimental identification of maximum aligned configurations in these isotopes. Empirical shell model calculations agree with the proposed excitation energy of the neutron h9/2 excitation in the 132Sn region. A discrepancy between the observed and calculated excitation energy of the Iπ= 12+ level in 136Te indicates possible admixtures of collective excitations in this nucleus. Clear signs of collective excitations are observed in 138Xe.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/PL00013594

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Digitale Medien

Shapes of the neutron-rich 88-94Kr nuclei (2000)

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

Springer

The European physical journal 9 (2000), S. 165-169

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ISSN: 1434-601X

Schlagwort(e): PACS. 21.10.-k Properties of nuclei; nuclear energy levels – 23.20.Lv Gamma transitions and level energies – 25.85.Ca Spontaneous fission – 27.60.+j 90 ≤A≤ 149

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract: Neutron-rich, 88-94Kr nuclei, populated in spontaneous fission of 248Cm, have been studied with EUROGAM 2, by measuring prompt γ-rays. Many new excited states in even-even Kr isotopes have been identified. For the first time spins and parities were determined experimentally in these nuclei. Our results indicate that the quadrupole deformation of Kr isotopes will appear only above N = 58, as observed in Sr and Zr nuclei. The newly found 3- level at 1506.4 keV in 90Kr suggests the exsistence of a new region of increased octupole correlations, probably associated with the ν(d 5/2 h 11/2) pair of Δl = Δj = 3 orbitals.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/s100500070033

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