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  • Author or Editor: M. Siad x
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Abstract  

The (n,p), (n, ), (n, 2n) and (n, ) reaction cross sections on90,92Zr,92,97,98,100Mo,78,81Br,181Ta,140Ce target nuclei have been measured forE n=14.73±0.05 MeV neutrons using the activation technique. The induced -ray activities of the irradiated samples and their monitor foils were measured by using HPGe detector. The cross sections are compared with the existing results. The experimental uncertainties are between 3% and 10% in most cases.

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Abstract  

The (n,p), (n,), (n,2n), (n,np), and (n,n ) reaction cross sections on24Mg, 227Al,28,29,30Si,35,37Cl,45Sc,46Ti,56Fe,58,61Ni,92Mo,107Ag,113,115In and197Au target nuclei have been measured for En=14.73±0.05 MeV neutrons using the activation technique. The induced -ray activities of the irradiated samples and their monitor foils were measured using a HPGe detector. The cross sections are compared with existing results. The experimental uncertainties between 3% and 10% in most cases are generally smaller than those given by other authors.

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Abstract  

Simultaneous determination of N, Mg, Al, Si, P, Cl, K, Ca and Fe in chicken dung and dates was carried out using fast neutron activation analysis (FNAA) with a SAMES J25 neutron generator. The activities were measured with a 72 cm3 high purity germanium detector using the relative method. The accuracy was checked with the aid of a standard reference material of milk powder A11 supplied by the IAEA. For the nitrogen contents, the results were compared to those obtained by the classical KJELDAHL method.

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