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The differential cross sections for elastic scattering of deuterons from l 6 0 have been measured in the Ed = 1.0. -. 2.5 MeV region at eight scattering angles. Resonances were observed at Ed = 1.00, 1.80 and 2.45 MeV, corresponding to the excited states in I8F at 8. 40, 9.11 and 9.69 MeV. Analysis of the data in terms of the single-level approximation leads to the assignments I" = 1+, 3+ and 2+, respectively. Reduced partial widths for elastic scattering were determined.

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The differential cross-section for the elastic scattering of He4 particles on Be9 has been studied in the bombarding energy range 1.4-2.5 MeV.The excitation functions for the elastically smttered a-particles from BeQ were measured a t six angles 90". 125", 132", 140", 160" and 160" in the centre of mass system. A clear and pronounced resonance is observed in the measured cross-section a t incident a-particle energy 1.93 MeV. Analysis of the data in terms of the single level approximation 5' theory leads to the assignment J" =for the observed resonance. Reduced and partial 2 widths for elastic scattering were determined.

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The current research uses sustainable methods to preserve the environment, such as exploiting municipal or industrial waste that may harm the environment. The wreckage of polyvinyl chloride (PVC) pipes and asphaltene are used as additives to cement to improve its mechanical properties, while stabilizing the radioactive waste resulting from the peaceful uses of nuclear materials, or enhancing its radiation shielding efficiency. New composites of Portland cement with ground PVC or asphaltene up to 50% are investigated. Fast neutron removal cross-section (ƩR) and gamma shielding parameters, such as mass attenuation coefficient (MAC), half-value layer (HVL), effective atomic number (Zeff), and exposure build-up factor (EBF) at wide energy range and thickness, are determined. The compressive strength and apparent porosity of the examined composites are examined to test the durability of the prepared composites as stabilizers for radioactive waste. The obtained results show that the bulk density of hardened cementitious composites was slightly increased by increasing the additive amount of PVC or asphaltene. The compressive strength of cement composites reached more than 4.5 MP at 50 wt.% PVC and 8.8 MPa at 50 wt.% asphaltene. These values are significantly higher than those recommended by the US Nuclear Regulatory Commission (3.4 MPa). Additionally, the obtained results demonstrate that although the gamma MAC is slightly decreased by adding asphaltene or PVC, the neutron removal cross-section was highly increased, reaching 171% in the case of 50 wt.% asphaltene and 304% in the case of 50 wt.% PVC. We can conclude that cement composites with PVC or asphaltene have optimized radiation shielding properties and can stabilize radioactive waste.

By comparison of experimental Ke,0 factors, determined in reactor positions with greatly different thermal-to-epithermal neutron flux ratios, with theoretically calculated Ke,0 factors, it is possible in some cases to select the best values from literature data for (n, gamma ) activation cross-sections and for absolute gamma intensities. Twenty different isotopes were considered.

Available experimental angular distributions for 6Li elastically scattered from 16O nucleus in the energy range 13.0–50.0 MeV are reanalyzed within the framework of optical potential, double folding optical potential as well as cluster folding potential. Special interest was paid to the cluster folding based on the well-known cluster structure of 6Li. Elastic scattering data for 6Li+16O system plotted as a function of momentum transfer showed that the real Coulomb nuclear interference region independent of the bombarding energy. This structural behavior for the data could be used to define the interaction potential with some certainty and to extract reliable values for the renormalization factors.