نتایج جستجو برای: 233u fissile material
تعداد نتایج: 364460 فیلتر نتایج به سال:
We report on a novel experimental approach for studying the dissipative spreading of collective motion in a metastable nuclear system, using, for the first time, highly fissile nuclei with spherical shape. This was achieved by fragmentation of 45 radioactive heavy-ion beams at GSI, Darmstadt. The use of inverse kinematics and a dedicated experimental setup allowed for the identification in atom...
We present fission cross-section measurements with 10ng of Pu performed using the LANSCE Lead Slowing-Down Spectrometer. Results of Liðn; aÞ measurements with a sample size of 760 ng of Li are also reported. This technical achievement demonstrates the feasibility of measuring neutron-induced fission cross-section on samples with 10 ng of fissile actinides that are available on ultra-small quant...
Thermochemcial characteristics of powder fabricated using oxidation treatment of spent PWR fuel and SIMFUEL were evaluated for recycling of spent fuel such as DUPIC process. Especially, the influence of spent fuel burn-ups on the powder fabrication characteristics was experimentally evaluated, ranging from 27,300 to 65,000 MWd/tU. Densities of powder manufactured from an oxidation, OREOX and th...
The Monte Carlo method – which based on the game of chance – was named after the famous Casino of Monte Carlo in Monaco. It was developed in the early fourtieth of the last century. For solving the so-called random neutron transport problems, i.e. diffusion in fissile materials. Already at an early stage of these investigations, the direct simulation was refined with certain variance – reducing...
A solution for the nuclear waste problem is the key challenge for an extensive use of nuclear reactors as a major carbon free, sustainable, and applied highly reliable energy source. Partitioning and Transmutation (P&T) promises a solution for improved waste management. Current strategies rely on systems designed in the 60's for the massive production of plutonium. We propose an innovative stra...
Small modular reactors (SMRs) may provide an energy option that will not emit greenhouse gases. From a commercial point-of-view, SMRs will be suitable to serve smaller energy markets with less developed infrastructure, to replace existing old nuclear and coal power plants, and to provide process heat in various industrial applications. In this paper, we examine how SMRs might challenge and impr...
Monte Carlo simulations provide accurate results for the neutronic response of system under consideration if modeling is performed appropriately since it has great influence on results. Sensitivity analysis approaches geometry and fissile material composition distributions in reactor core was by taking ITU TRIGA Mark II Research Reactor into consideration. The method defining fuel element posit...
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