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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 337 (1990), S. 39-44 
    ISSN: 1434-601X
    Keywords: 25.40-h ; 24.60. Dr ; 25.40. Fq
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A systematic investigation was carried out on115In to determine the contribution of different reactions to the total non-elastic cross-section in the 13.43 and 14.84 MeV incident neutron energy range. All the major components ofσ NE were measured with exception of theσ g(n, n′) cross section. An analytical expression is recommended to estimate theσ NE data as a function of mass number at En=14.1 MeV. By the knowledge ofσ NE, the energy dependence ofσ g(n, n′) could be deduced. The isomeric cross section ratios both for (n, 2n) and (n, n′) processes were also determined in the given energy range. The present experiment proves the dependence ofσ m/(σ g+σ m) ratio on the spin value (I m) of the isomeric state in the (n, 2n) reaction. Excitation functions of the (n, 2n), (n, n′) (n, p) and (n∶ p, α) reactions calculated by STAPRE code show good agreement with the experimental results.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1434-601X
    Keywords: 25.40-h ; 24.60.Dr ; 25.40.Fq
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Cross sections for the reactions27Al(n, p)27Mg and28Si(n,p)28Al were measured by activation method between 13.40 and 14.83 MeV neutron energy. An accuracy of about 4% was achieved using the27Al(n, α)24Na reaction as a reference at 14.1 MeV where the relative excitation function has also been measured. Results obtained were compared to a recent compilation and that calculated by the Hauser-Feshbach model. Using the back-shifted level density formula and taking into account the contribution of the separated levels, the calculations were extended to the energy range from the threshold to 18 MeV. A structure was observed in the27Al(n, α)24Na reaction cross section curve around 14 MeV neutron energy.
    Type of Medium: Electronic Resource
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