Transportul neutronilor este esențial pentru operarea reactorilor nucleari. Se redă prin ecuațiile: 1 v ( E ) ∂ ψ ( r , E , Ω ^ , t ) ∂ t + Ω ^ ⋅ ∇ ψ ( r , E , Ω ^ , t ) + Σ t ( r , E , t ) ψ ( r , E , Ω ^ , t ) = {\displaystyle {\frac {1}{v(E)}}{\frac {\partial \psi (\mathbf {r} ,E,\mathbf {\hat {\Omega }} ,t)}{\partial t}}+\mathbf {\hat {\Omega }} \cdot \nabla \psi (\mathbf {r} ,E,\mathbf {\hat {\Omega }} ,t)+\Sigma _{t}(\mathbf {r} ,E,t)\,\psi (\mathbf {r} ,E,\mathbf {\hat {\Omega }} ,t)=\quad } χ p ( E ) 4 π ∫ 0 ∞ d E ′ ν p ( E ′ ) Σ f ( r , E ′ , t ) ϕ ( r , E ′ , t ) + ∑ i = 1 N χ d i ( E ) 4 π λ i C i ( r , t ) + {\displaystyle \quad {\frac {\chi _{p}\left(E\right)}{4\pi }}\int _{0}^{\infty }dE^{\prime }\nu _{p}\left(E^{\prime }\right)\Sigma _{f}\left(\mathbf {r} ,E^{\prime },t\right)\phi \left(\mathbf {r} ,E^{\prime },t\right)+\sum _{i=1}^{N}{\frac {\chi _{di}\left(E\right)}{4\pi }}\lambda _{i}C_{i}\left(\mathbf {r} ,t\right)+\quad } ∫ 4 π d Ω ′ ∫ 0 ∞ d E ′ Σ s ( r , E ′ → E , Ω ^ ′ → Ω ^ , t ) ψ ( r , E ′ , Ω ^ ′ , t ) + s ( r , E , Ω ^ , t ) {\displaystyle \quad \int _{4\pi }d\Omega ^{\prime }\int _{0}^{\infty }dE^{\prime }\,\Sigma _{s}(\mathbf {r} ,E^{\prime }\rightarrow E,\mathbf {\hat {\Omega }} ^{\prime }\rightarrow \mathbf {\hat {\Omega }} ,t)\psi (\mathbf {r} ,E^{\prime },\mathbf {{\hat {\Omega }}^{\prime }} ,t)+s(\mathbf {r} ,E,\mathbf {\hat {\Omega }} ,t)} Ecuația de transport a neutronilor se bazează pe ecuația lui Boltzmann din teoria cinetică a gazelor. Reactor nuclear Wikiwand in your browser!Seamless Wikipedia browsing. On steroids.Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.Wikiwand for ChromeWikiwand for EdgeWikiwand for Firefox
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