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  • 11
    Electronic Resource
    Electronic Resource
    New insight in the level structure of 153Er (2000)
    Springer
    The European physical journal 7 (2000), S. 149-153 
    Details
    ISSN: 1434-601X
    Keywords: PACS: 21.10.Pc Single-particle levels – 23.20.Lv Gamma transitions and level energies – 27.70.+q 150 ≤ A ≤ 189
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The high-spin level structure of the 153Er nucleus has been reinvestigated by in-beam γ-ray and electron spectroscopy with (14N,pxn) reaction. Excitation energies, spin and parity assignments are unambiguously established for the two lowest isomers T 1/2≃ 380 ns and T1/2\simeq 10 ns. The characteristics of the third one (T 1/2≃ 250 ns) at 5.2 MeV are still questionable but its main decay modes are better known. An extension of the level scheme is proposed up to 8.4 MeV.Experimental results have been discussed in terms of shell model multiplets and compared with the other structures observed in N=85 neighbouring nuclei.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00013591
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  • 12
    Electronic Resource
    Electronic Resource
    New results in the decay of150Ho and152Tm (1980)
    Springer
    The European physical journal 297 (1980), S. 303-306 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new isotope152Tm (T 1/2=5.2±0.6 s) and a new isomeric state in150Ho (T 1/2=88±15 s) were observed with the on-line isotope separator ISOCELE II at Orsay. The decay of152Tm is similar to the one of the high spin state (9+) in150Ho. The new150Ho isomer, probably with a low spin (2 or 3), decays mainly to the 2+ level in150Dy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01422788
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  • 13
    Electronic Resource
    Electronic Resource
    New isomers in neutron-deficient isotopes of124Cs and127Ba (1981)
    Springer
    The European physical journal 299 (1981), S. 185-186 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract By on-line mass separation and subsequent gamma and electron decay-spectroscopy at very low energy, two new isomers,124mCs (T1/2=6.3 ±0.3 seconds) and127mBa (T1/2=1.9±0.2 seconds) have been identified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01440921
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  • 14
    Electronic Resource
    Electronic Resource
    New isomers and their decay in odd-odd neutron-deficient cesium isotopes (1983)
    Springer
    The European physical journal 313 (1983), S. 173-187 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract By a systematic on-line cesium mass separation fromA=122 toA=132 and subsequent gamma and electron decay spectroscopy at very low energy, new isomers have been precisely identified:122m Cs (T 1/2=0.36±0.02 s),124m Cs (T 1/2=6.3±0.2 s) and130m Cs (T 1/2=3.46±0.06 min). Detailed level schemes are given for both124m Cs and130m Cs. Comparison of excited levels known in the odd-odd nuclei of the same region shows that more experimental informations are needed to propose a clear and realistic picture of the nuclear states structure. Radioactivity:122m, 124m, 130m Cs [from La or Ce,3Hexn]-measuredT 1/2,E γ,I γ,E CE ,I CE ,γ-γ-t, γ-ce coinc.; deduced ICC,124, 130Cs deduced levels,J, π. Online mass separated sources, Ge(Li), intrinsic Ge, Si(Li), magnetic electron selector.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01417225
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  • 15
    Electronic Resource
    Electronic Resource
    The spectroscopy and structure of odd-A Fr isotopes with A = 213−225 (2000)
    Springer
    Czechoslovak journal of physics 50 (2000), S. 949-968 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The remarkable features of the spectra of the odd-A Fr isotopes from 213Fr (with 126 neutrons) through 225Fr (with 138 neutrons) serve as a sequence of examples for the application of a variety of nuclear models. As the shapes vary from spherical to spherical with strong octupole correlations to octupole-deformed, the corresponding symmetry breaking leads to increasingly complex spectra. Of considerable interest is the fact that the 219Fr 9/2− ground state has the character of an h9/2 shell model state while still having the rotational properties appropriate as a legitimate member of a reflection asymmetric K = 1/2− band. It is also possible to follow the expansion of the more degenerate shell model states into the less degenerate reflection asymmetric states. This results from dramatic decreasing in decoupling parameters with increasing mass number.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022887329369
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