Using a nucleon–nucleon force of the type M3Y-Reid and an additional repulsive interaction which simulates the incompressibility effects of the nuclear matter, we have examined the effects of the repulsive core modeling on the interaction potentials and complete fusion cross-sections for 9 Be + 124 Sn and 9 Be + 89 Y systems. The adjusted parameters of this repulsive force have been chosen in such a way that fully explains the properties of the nuclear matter in the region where the nuclear densities of the interacting nuclei completely overlap. The results of our studies reveal that accounting for this correction in the calculations of the total potentials leads to improvement of calculated cross-sections and affects on the complete fusion suppression at above barrier energies.
Recent experimental results for the fusion of the weakly bound nucleus 9 Be with spherical targets are analyzed by dynamical classical trajectories approach. In this approach, the Proximity model has been used to calculate the nuclear part of interaction potentials. Having determined the breakup functions and interaction potentials for 9 Be + 124 Sn , 89 Y , 144 Sm and 208 Pb reactions, the complete and incomplete fusion (ICF) cross-sections are calculated by classical trajectories model and our results show a good description of the experimental data. We have stressed on the ICF probability ( P ICF ) for chosen reactions. The obtained results show that the ( P ICF ) based on our calculations are in a good agreement with both experimental data and empirical predictions [J. Hinde et al., Phys. Rev. Lett.89, 272701 (2002)].
The extensive use of 64Cu (T1/2 = 12.7 h) as a positron and electron emitter radioisotope in recent years has ensured its potential to serve a dual role in the development of molecular agents in PET and radioimmunotheraphy drugs in oncology. The TALYS 1.0 code was used to calculate excitation functions for induced proton, deuteron and alfa-particles on 64Zn, 66Zn, 67Zn, 68Zn, 70Zn, 62Ni, and 64Ni up to 50 MeV. According to the data acquired by the TALYS 1.0 code, thick-target integral yield of the induced charged particles on the enriched targets was achieved
The Indium-111 physical-decay parameters as a β-emitter radionuclide show some potential for radiodiagnostic and radiotherapeutic purposes. Medical investigators have shown that 111 In is an important radionuclide for locating and imaging certain tumors, visualization of the lymphatic system and thousands of labeling reactions have been suggested. The TALYS 1.0 code was used here to calculate excitation functions of 112/114–118 Sn+p , 110 Cd +3 He , 109 Ag +3 He , 111–114 Cd+p , 110/111 Cd+d , 109 Ag +α to produce 111 In using low and medium energy accelerators. Calculations were performed up to 200 MeV. Appropriate target thicknesses have been assumed based on energy loss calculations with the SRIM code. Theoretical integral yields for all the latter reactions were calculated. The TALYS 1.0 code predicts that the production of a few curies of 111 In is feasible using a target of isotopically highly enriched 112 Cd and a proton energy between 12 and 25 MeV with a production rate as 248.97 MBq·μA-1 · h-1. Minimum impurities shall be produced during the proton irradiation of an enriched 111 Cd target yielding a production rate for 111 In of 67.52 MBq· μA-1 · h-1.
Alpha-decay half-lives of the even–even superheavy isotopes with proton numbers [Formula: see text] have been calculated within the cluster model. The alpha-daughter potential was constructed by employing the density-dependent double-folding model with a realistic nucleon–nucleon interaction whose exchange part has a finite range approximation. The half-lives were calculated using Wentzel–Kramers–Brillouin (WKB) approximation with the alpha preformation factor. The results have shown that the computed alpha-decay half-lives were in good agreement with their counterpart calculated by different semi-empirical approaches. The obtained results have also shown a negative linear relationship between the logarithm of the preformation factor and the fragmentation potential for the understudy isotopes. Also, the calculated results have shown that isotopes [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] had longer half-lives than their adjacent isotopes, which indicates that the corresponding neutron or proton numbers have a magical or semi-magical properties. Furthermore, we have studied the competition between alpha-decay and spontaneous fission to predict possible decay modes from the even–even isotopes [Formula: see text]. The results revealed that the isotopes [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] had alpha-decay as a predominant mode of decay and the nuclei [Formula: see text], [Formula: see text], [Formula: see text], and [Formula: see text] could not survive from the spontaneous fission. We hope that the theoretical prediction could be helpful for future investigation in this field.
The effects of the projectile deformation and orientation on the total potential characteristic have been studied for the reactions between weakly bound nucleus, 9Be, as the projectile and different targets. In this paper, the double-folding model is used to calculate the nuclear potentials and deformation of projectile included. It is shown that applying the deformation effects can modify the potential barrier height and depth in the interior regions of the potential. It is also shown that the gradient variation of the potential barrier height is linearly increased when the angle between the projectile and the target nuclei increases. The rate of the variation is constant in different reactions with 9Be. In order to study the possible effect of these deformation dependent potentials, application is made in the calculation of cross-sections of the different reactions. It is observed that the deformation and orientation are of important role in the dynamics of such reactions and improve the agreement with the experimental results.
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