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  • Articles: DFG German National Licenses  (3)
  • 21.10.Pc  (1)
  • PACS. 24.75.+i General properties of fission – 25.85.Ec Neutron-induced fisssion – 25.85.Ge Charged-particle induced fission  (1)
  • PACS: 21.10.Hw Spin, parity, and isobaric spin – 23.40.Hc Relation with nuclear matrix elements and nuclear structure – 27.50.+e 59 ≤ A ≤ 89  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Production of neutron-rich isotopes in fission of uranium induced by neutrons of 20 MeV average energy (2000)
    Springer
    The European physical journal 9 (2000), S. 385-396 
    Details
    ISSN: 1434-601X
    Keywords: PACS. 24.75.+i General properties of fission – 25.85.Ec Neutron-induced fisssion – 25.85.Ge Charged-particle induced fission
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: In the context of a parameter study conducted by several laboratories for future European radioactive beam facilities based on fast-neutron induced fission, in particular for the SPIRAL-II project at GANIL, we have measured the yields of neutron-rich isotopes in the mass range of 88 to 144. These nuclei were obtained as fission products of natural uranium bombarded by neutrons of 20 MeV average energy emitted by a thick carbon target irradiated by 50 MeV deuterons. Yields have been measured using on-line mass separation with the ion-guide method. Compared with proton-induced fission at 25 MeV the magnitude of cross-sections, except for the symmetric region, is similar. Z-distributions of isobars have the same width, 0.7 charge units, but their maxima are shifted by about 0.8 charge units, favouring production of the neutron-richer isobars. Our data allow calculations of absolute cross-sections for fission of natural uranium induced by neutrons of about 20 MeV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500070023
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Gamow-Teller decay of118Pd and of neighbouring even isotopes of palladium (1989)
    Springer
    The European physical journal 333 (1989), S. 339-348 
    Details
    ISSN: 1434-601X
    Keywords: 23.40.Hc ; 21.10.Dr ; 21.10.Pc ; 27.60.+j ; 29.30.Kv
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Neutron-rich isotopes of palladium were produced via the fission of238U by 20 MeV protons. These isotopes were selected using the ion guide-fed on-line mass-separator facility IGISOL at Jyväskylä. Their decays were studied byβ-ray,γ-ray and conversion-electron spectroscopy. For114Pd and116Pd, the decay schemes established previously were confirmed; additionally multipolarities were determined for a few transitions. In the case of118Pd, only an approximate half-life was known from a previous radiochemical experiment. In the present study, 15 gamma transitions were observed, most of which were placed in a decay scheme. The half-life and the decay energy were found to beT 1/2=1.9±0.1 s andQ β=4.0±0.2 MeV. The decay schemes of114Pd,116Pd and118Pd include — respectively — two, two and four 0+→1+ Gamow-Teller beta transitions with logft values between 4.1 and 5.1. The strength of these transitions is discussed in terms of the extreme single particle shell model with pairing and the spherical proton-neutron quasiparticle random phase approximation. The possible role of deformation is considered using a shell correction method. Predictions for the decay properties of the as yet unobserved120Pd are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01299686
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Beta decay of 61Ga (1999)
    Springer
    The European physical journal 5 (1999), S. 151-156 
    Details
    ISSN: 1434-601X
    Keywords: PACS: 21.10.Hw Spin, parity, and isobaric spin – 23.40.Hc Relation with nuclear matrix elements and nuclear structure – 27.50.+e 59 ≤ A ≤ 89
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: The β decay of 61Ga to its mirror nucleus 61Zn has been measured for the first time by using on-line mass separation and β-delayed gamma-ray spectroscopy. The observed decay strength to the ground state implies superallowed character in accordance with the systematics of the mirror decays in the sd and fp shell. The β feedings observed to four excited states in 61Zn are consistent with earlier spin-parity assignments based on in-beam experiments. The ground-state spin and parity for 61Ga were determined to be 3/2−.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100500050271
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    Paper (German National Licenses)
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