Methods and Theory

• Lattice Physics Calculations
• Self-Shielding
  • Neutron Slowing Down in Infinite Homogeneous Media
    • Narrow Resonance Approximation
    • Wide Resonance Approximation
    • Intermediate Resonance Approximation
  • Heterogeneous Media
    • Wigner Rational Approximation
    • Multi-Term Rational Approximation
    • Carvik’s and Roman’s Two-Term Rational Approximations
  • Dancoff Factors
    • Modifications to the Fuel Escape Probability
    • Calculating Dancoff Factors
  • Stoker-Weiss Method for Annular Rings
  • Cladding Self-Shielding
• Pin Cell Spectrum Calculation
• Assembly Calculation
• Nodal diffusion