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  • Electronic Resource  (3)
  • 1975-1979  (3)
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  • Electronic Resource  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Study of the level structures of80Br and82Br using the thermal neutron capture reaction (1978)
    Springer
    The European physical journal 286 (1978), S. 107-119 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The level structures of the doubly odd nuclei80Br and82Br have been studied by means of the thermal neutron capture reactions79Br(n, γ)80Br and81Br(n, γ)82Br. Captureγ-ray spectra from isotopically separated targets have been measured in the approximate energy intervals 30〈E γ(keV)〈1100 with three bent crystal spectrometers installed at the Grenoble high-flux reactor. Measurements with Ge(Li) detectors covered the energy range 0.1〈E(MeV)〈8. Gamma-gamma coincidences have been taken at the research reactor FRJ-2 (Dido) at the Kernforschungsanlage Jülich. The conversion-electron spectra of80Br and82Br from thermal neutron capture have been measured with the beta-spectrometer at the Grenoble high-flux reactor. Using all these data the level schemes of80Br and82Br are proposed up to 1.5 MeV. Spin assignments for the excited states below 800 keV are proposed. The level schemes are discussed in terms of shell model configurations and, as an alternative description, in terms of the Nilsson model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01434619
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Levels in154Eu populated by thermal neutron capture (1977)
    Springer
    The European physical journal 282 (1977), S. 97-106 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The level scheme of154Eu has been investigated by means of thermal neutron captureγ-rays and conversion electrons. The high energyγ-ray spectrum from thermal neutron capture in enriched153Eu has been studied in the energy range of 5700 to 6500 keV. Low energyγ radiation has been observed with Ge(Li) and Si(Li) detectors from 5 to 300 keV and conversion electrons have been measured from 15 to 300 keV. Low energy (n, γγ) coincidences and half lives of transitions have been measured. The data, combined with three very recent studies of the 8− isomer decay in154Eu has led to the construction of a level scheme with 12 excited levels. Nuclear Reaction153Eu(n, γ),E n =thermal, measuredE γ ,I γ ,E ce ,I ce ,γγ-coincidence, halflives,154Eu deduced levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01881011
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Study of the level structure of239U using the thermal neutron capture reaction (1978)
    Springer
    The European physical journal 286 (1978), S. 31-43 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract For the investigation of vibrational states in odd A nuclei we have studied the level structure of239U by the238U (n thermal,γ) reaction. Various complementary measurement techniques as curved-crystal-, anti-Compton-,γ-γ coincidence- and conversion electron spectroscopy have been applied. The resulting data have been used to establish the deexcitation scheme of239U up to ∼1.3 MeV and to make spin assignments. Most of the levels are interpreted in terms of the Nilsson model. The data also indicate the presence of the Nilsson states ¦501↺¦ and ¦750¦. Three members of theΒ-vibrational band built on the ¦631↺¦ state and one member of theΒ-vibration built on the ¦622↑¦ ground state have been identified through transitions with strongE0 admixtures. The octupole vibrational state built on the ¦631↺¦ band is proposed at 815 keV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01434611
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    Paper (German National Licenses)
    Fulltext
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