The mean-field model based on Skyrm Forces (SF) or associated density function has a wide application to describe nuclear states, collective vibrational excitation, and heavy-ion collisions. The Sky3D solves static or dynamic equations on a Cartesian 3-D mesh with isolated or periodic boundary conditions without further assumptions on the symmetry which shows more characteristics of the structure of nuclei. In the present work, time-dependent Hartree-Fock Skyrm (TDHF) calculations were completed on a set of Sn ISOTOPES to obtain and compare the nuclear deformation parameters in static and dynamic states. It was found that in deficient neutron nuclei, even the most modern particle calculations unable to describe the improved collectivity below the mean shell in Sn approaching N = Z = 50. It was shown that the effective interaction plays an important role in the details of the reaction, and carries information about the heavy-ion reactions to the details of the effective interaction.

Among the noble gases, Xenon ISOTOPES are the most widely used. So far, no specific strategy has been published for separating all Xenon stable ISOTOPES with the highest number of stable ISOTOPES. In this research, a computational code, SQCAS, is prepared to determine the target isotope separation strategy in light or heavy current. The prepared code investigates the separation of the natural ISOTOPES in proportion to the feed concentration by changing the parameters of the square cascade and modeling it at each step. All stable ISOTOPES of natural xenon are separated using a square cascade in 32 steps for the certain feed (200kg). The proposed square cascade has 20 stages. In each stage, 10 centrifuges were used. Also, the separation factor for the unit mass difference in this research equals 1. 2. Using this strategy, the enrichment of nine ISOTOPES increases from 0. 9393, 0. 0009, 0. 01917, 0. 2644, 0. 408, 0. 2118, 0. 2689, 0. 1044, and 0. 087 to 98. 72%, 91. 3%, 92. 79%, 92. 63%, 83. 77%, 90. 12%, 91. 64%, 95. 68%, and 99. 04%, respectively. The results show that the highest recovery is related to the end ISOTOPES, and the lowest recovery is related to Xe-135 isotope.

Hydrogen isotope separation can be achieved by confinement to small mesoporous structures or by strong adsorption sites. MOFs are attractive candidates for isotope separation, considering their tunable pore structures and the potential to introduce adsorption sites. In this research, we investigate the formation of elongated dihydrogen complexes near MOF’s open metal sites as a promising reaction for isotope separation. The electronic structure of all MOFs (M is the first-row transition metal) is studied based on density functional theory. The quantum chemical approach suggests Fe-MOF as a promising candidate for isotope separation by modeling the non-covalent interactions with the active site/H2 cluster.

In this investigation calculated cross section of induced photo-fission of uranium ISOTOPES, 230-239U using simulation through optical model are compared with experimental data. To obtain photo-fission cross section transition probability through three humps fission barrier is used. Also, in order to calculate level density of compound nucleus, improved version of Enhanced Generalized Super-fluid Model (EGSM) is employed. Simulated cross sections using Empire code for these ISOTOPES in a wide range of energy are compared with available experimental data. Cross sections for different ISOTOPES of uranium are plotted as a function of energy in the range 5 to 20 MeV. Good agreement achieved when the results of Empire code are compared with available experimental data.

The Muteh gold district is located about 70 km northeast of Golpaygan within Sanandaj-Sirjan metamorphic zone of Zagros Structural Belt. Geological studies show that the area had been under poly - phase metamorphism. Gold mineralization occurs in metamorphic complex which consists mainly of green schists, meta-volcanics, and gneisses. Shear zones are the host of gold mineralization, and intense alterations occur along the normal faults. Gold par agenesis minerals include pyrite, chalcopyrite, pyrrhotite and secondary minerals. There is three generation of pyrites. This contribution is aimed to improve our knowledge of understanding the source of the ore-bearing fluids in this area. In this regard, fifteen samples were selected for hydrogen, oxygen and sulfur isotope studies. The mean values of 12.4% and-42% for d18O, and dD ISOTOPES with the mean value of 7.75% of calculated fractionation factors for d18OH2O from quartz veins indicate that metamorphic host rocks are the most important source for the fluids and gold mineralization in the Muteh area. Gold mineralization is closely associated with intense hydrothermal alteration along the ductile shear zones. However, our observation shows that the characteristics of the gold mineralization in the study area are also similar to that of other hydrothermal with magmatic origin. Five available sulfur isotope (d34S) data are highly variable (+2.2, 6.6, 9.1, 13.9, and 16.9%) even from the same type of hosted rocks. The isotope data, suggest that the source of sulphurs were not homogenous. Based on sulfur isotope compositions at Muteh gold district, it can be concluded that several different sources or processes could account for the sulphide fluids. The d34S values in the studied area demonstrate that source of sulphides are mainly derived from the metamorphism fluids though hydrothermal fluids related to magmatic activities.

Galali orebody is located in Sanandaj-Sirjan zone in west of Iran in the Karamkhani slops in Almogholagh mountains. The main ore is magnetite association with hematite, goethite, secondary limonite, malachite and pyrite. This orebody is located on north Galali fault, mineralization is made by fault movements in this orebody. Three types of ores have been seen in the Galali orebody as below: Type I: this ore is made of compact, high density and high grad magnetite. Fine grain, subhedral to unhedral pyrite has found in this type as minor mineral. Pyrite is dispersed in magnetite. Type II: this ore type are made of silicates, oxides and sulfides, this phase is injected in the type I minerals. Type III: the hydrothermal goethite is the third type of ore in the Galali orebody. Skarn, epydotization, dolomitization and some argilic veins are alteration haloes around the orebody. Evaporatic origin is recognized for sulphur ISOTOPES in this study.

The total excitation energy, TXE, as a function of fission fragments, is evaluated for neutron-driven fission of 230-236U using the statistical scission point model. In this model, as the systematic model, the total excitation energy includes the deformation and intrinsic energy. TXE values calculated by the systematic model are compared with the available experimental data for the neutron-induced 233U. Then the total excitation energy as a function of fission fragments is evaluated for neutron-induced fission of 230-236U. The total excitation energy distribution is compared for neutron-induced fission and for photofission of 233U and 238U. There is little difference between the TXE distribution of neutron-induced fission and photofission. The prompt neutron distribution is evaluated by using the obtained total excitation energy. The calculated prompt neutron number has a large variation for even uranium ISOTOPES due to the neutron-separated energy of fission fragments. In addition, the prompt neutron number for heavy fission fragments is less than the experimental neutron number which due to the excess neutron of those fragments. It is due to the evaporation of an excess neutron with lower TXE values in heavy fragments.

Today, the importance of modern science and technology, especially the use of environmental ISOTOPES in various studies, including hydrology and geohydrology, is obvious for anyone. Given the quantitative and qualitative crisis status of groundwater resources in Iran, having accurate isotopic data on the quantitative and qualitative status of water resources can lead to good planning and, consequently, proper management of water resources. Due to the lack of sufficient studies on the environmental ISOTOPES in Iran, which, of course, is due to the lack of technologies, high costs of sample transfer to overseas and sanctions, while reviewing the sampling of Groundwater resources, sample preparation methods for stable ISOTOPES of 2H, 18O, 34S and 13C, and the standards for each isotope; related devices such as Gasbench+ DeltaPlusXP, Elemental Analyzer-Isotope Ratio Mass Spectrometer (EA-IRMS), and Total Inorganic Carbon-Total Organic Carbon (TIC-TOC), as well as measurement methods are presented.