نتایج جستجو برای: fission of uranium
تعداد نتایج: 21167870 فیلتر نتایج به سال:
In this study, the nuclear fission shrapnel technique was used to find level of uranium at blood cancer patients in Salah Al-Din Governorate. Average patient samples ranged between 1.738 ppb 7.003 (female, 60 years old, from Baije), while results for healthy group 0.302 and 2.332ppb. The showed a significant increase patients, compared with people.
The production of heavy nuclides from the spallation-evaporation reaction of U induced by 1 GeV protons was studied in inverse kinematics. The evaporation residues from tungsten to uranium were identified in-flight in mass and atomic number. Their production cross-sections and their momentum distributions were determined. The data are compared with empirical systematics. A comparison with previ...
A very general saddle point nuclear shape may be found as a solution of an integro-differential equation without giving apriori any shape parametrization. By introducing phenomenological shell corrections one obtains minima of deformation energy for binary fission of parent nuclei at a finite (non-zero) mass asymmetry. Results are presented for reflection asymmetric saddle point shapes of thori...
Monitoring of transuranic actinides (TRU–includes neptunium, plutonium, americium, and curium) during the separation of used nuclear fuel has been identified as a critical research area in the U.S. Advanced Fuel Cycle Research and Development program (AFC R&D). Recycling of used fuel by chemically separating it into uranium, fission products, and TRU would be the first step in this new fuel cyc...
The uranium concentrations in teeth samples were determined using a Lexan nuclear track detector and fission tracks registration methodology for 25 of teeth, each weighing (0.7) grams measuring (2) mm thickness, Teeth collected from private clinics government hospitals different areas the city Samawa both males females. Thermal neutron bombardment (U) (241Am-Be) source with flux (5×103 .n.cm-2 ...
Recent efforts have been made to improve the prompt fission neutron spectrum and nu-bar measurements for Uranium and Plutonium isotopes particularly in the keV region. A system has been designed at Rensselaer Polytechnic Institute (RPI) utilizing an array of EJ-301 liquid scintillators as well as lithium glass and plastic scintillators to experimentally determine these values. An array of BaF2 ...
Neutron counters have been used by safeguard inspectors worldwide for over 20 years to accurately perform Non-Destructive Assays of pure samples of plutonium and uranium. These systems rely on the neutron coincidence counting technique to separate time-correlated fission neutrons from random, uncorrelated neutrons to determine the fissile mass. Impure samples such as mixed-oxide (MOX) scrap mat...
in the present research, we want to simulate the fission process of the excited nucleus 207at produced in fusion reaction 19f+188os in the framework of the modified statistical model with considering the effects of projection of spin about the symmetry axis, k, and temperature. in our simulation, we calculate the fission cross section and anisotropy of the fission fragment angular distribution ...
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