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  • 27.40.+ z  (2)
  • 27.50. + e  (2)
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Material
Years
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Complete spectroscopy of51,52V via the50,51V(n, γ) reactions (1991)
    Springer
    The European physical journal 338 (1991), S. 371-387 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Ma ; 23.20.Lv ; 25.40.Lw ; 27.40.+ z
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The gamma-ray spectra emitted after thermal neutron capture in highly enriched50V andnatV targets have been studied using in-pile targets at the ILL high flux reactor and pair and germanium detectors. The neutron binding energies in51V and52V were determined to beB n (51V)=11051.11(17) keV andB n (52V)=7311.22(26) keV. The thermal neutron capture cross-section in50V was measured to be 21 −2 +4 b. From 724 lines attributed to51V, 330 transitions, comprising 90% of theγ-ray flux, were placed into the level scheme. Fifty-nine primary dipole transitions from the 11/2+ or 13/2+ capture states in51V were established from which the E1 strength distribution was deduced. The energy scaling of these primary transitions was found to follow the E1-giant dipole resonance dominance. Many new levels were established; a number of states proposed in previous (d,p) and (n,γ) work were confirmed from their primary population and decaying secondary radiations. The density of levels in the high spin (9/2≦I≦15/2) region was parametrized with the Fermi gas model. The spin distributions of51V were analyzed and a spin cut-off parameter σ=2.8 (3) was deduced. — A nearly complete level scheme of52V up to 3.5 MeV excitation and similar results concerning the level density and the primary γ-ray spectrum were obtained in the51V (n, γ)52V study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01295765
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Transitions in41K studied with the (n, n′γ) reaction (1987)
    Springer
    The European physical journal 326 (1987), S. 327-332 
    Details
    ISSN: 1434-601X
    Keywords: 27.40.+ z ; 28.20.Cz
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Singles gamma ray spectra of the41K(n, n′γ)41K reaction have been measured with fast reactor neutrons. The populated states and γ-ray intensities are compared with those of the40K(n, γ)41K reaction. About 91% of the observed gamma ray intensity was assigned to the decay of 35 states in41K. The energy and spin dependence of the gamma ray fluxes in both reactions are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01297587
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Double neutron capture in62Ni (1992)
    Springer
    The European physical journal 343 (1992), S. 7-14 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Ma ; 23.20.Lv ; 25.40.Lw ; 27.50. + e
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The γ-radiation following single and double neutron capture in isotopically enriched62Ni was studied at the high flux reactor of the Institut Laue-Langevin, using a pair and Compton suppressed germanium detector. Measurements before and after 170 d of breeding were performed. The γ-ray fluxes through63Ni and64Ni are discussed; several new levels and spin-parity assignments were found. On the basis of the known discrete levels and the low-energy neutron resonances, level density parameters were determined within the Constant Temperature Fermi Gas model. The neutron binding energies were measured asB n (63Ni)=6837.92(18) keV andB n (64Ni)=9657.64(24) keV. The63Ni (n, γ) cross section for reactor neutrons was measured to be σ=20 −2 +5 b.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01291590
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  • 4
    Electronic Resource
    Electronic Resource
    Heavy-ion in-beam studies of the nucleus87Nb (1991)
    Springer
    The European physical journal 340 (1991), S. 125-139 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.R ; 23.20.ck ; 27.50. + e
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High spin states in the transitional nucleus87Nb up to 14 MeV excitation have been established for the first time via the reactions40Ca(50Cr, 3p)87Nb and58Ni (32S, 3p)87Nb. The87Nbγ-radiations have been identified throughγ-ray spectra taken in coincidence with the evaporation residues detected in the Daresbury recoil separator or with multiple proton emission. Gamma-gamma coincidences, DCO ratios,γ-ray angular distributions and lifetimes have been measured. A total of some 100 transitions have been placed into a level scheme comprising of sixty states. The one-quasiparticle (1qp) bands of either parity and several other band-like structures have been identified, some containing alignedg 9/2 nucleons. Moderately enhancedE2 in-band transitions of 13–48 W.u. as well as several weakE2 yrast transitions connecting bands with different quasiparticle numbers have been found. Similarities with respect to theN=46 isotones83Rb,84Sr,85Y,86Zr and88Mo are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01303824
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    Paper (German National Licenses)
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