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英文字典中文字典相关资料:


  • Critical mass - Wikipedia
    When a nuclear chain reaction in a mass of fissile material is self-sustaining but not growing, the mass is said to be in a critical state, in which there is no increase or decrease in power, temperature, or neutron population
  • Criticality accident - Wikipedia
    Criticality occurs when sufficient fissile material (a critical mass) accumulates in a small volume such that each fission, on average, produces one neutron that in turn strikes another fissile atom and causes another fission
  • LA-10860-MS Reference Set | Nuclear Criticality Safety Program
    This reference set includes detailed reports, data, and guidelines significant for understanding nuclear criticality safety, experimental outcomes, and associated methodologies
  • 0447 - F101S - Nuclear Criticality Safety - 03 - Nuclear Theory.
    The method judges subcriticality of a facility loading (in mass per unit area) of fissile material by comparison to that of a critical reflected infinite slab of the same material
  • Manhattan Project: Science gt; Nuclear Physics gt; CRITICAL MASS
    The critical mass of a fissionable substance depends upon its density, purity, and design When a mass of fissionable material increases in density, the mass required to achieve criticality decreases
  • 6. 4: The Manhattan Project - Critical Mass and Bomb Construction
    The amount of a fissionable material that will support a self-sustaining chain reaction is a critical mass In order to determine critical mass required for a nuclear chain reaction, Enrico Fermi and Leo Szilard constructed the world's first controlled fission experiment
  • Critical Mass - Atomic Archive
    The amount of a fissionable material's critical mass depends on several factors; the shape of the material, its composition and density, and the level of purity A sphere has the minimum possible surface area for a given mass, and hence minimizes the leakage of neutrons
  • Nuclear Criticality Safety Engineer Training Module 8
    This module presents two traditional hand calculation methods for estimating the critical size or subcriticality of a system, or establishing the limiting conditions for either single fissile units or arrays of units Many textbooks provide derivations of buckling parameters
  • Critical mass - chemeurope. com
    A critical mass is the smallest amount of fissile material needed for a sustained nuclear chain reaction The critical mass of a fissionable material depends upon its nuclear properties (e g the nuclear fission cross-section), its density, its shape and its enrichment
  • An elementary method to determine the critical mass of a sphere of . . .
    A simplified method to calculate the critical mass of a fissile material sphere is presented This is a purely pedagogical study, in part to elucidate the historical evolution of criticality calculations





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