## Variational Calculation of Heterogeneous Resonance Absorption |

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### Contents

CHAPTER | 25 |

PART 2 APPLICATION | 45 |

B The Boundary and Matching Consitions | 75 |

1 other sections not shown

### Common terms and phrases

absorber and moderator accuracy adjoint equation adjoint source adjoint system analytic angle angular flux approximation assumed assumptions Boltzmann equation calculations corresponding defined derivatives described directional flux discussed Doppler Doppler-broadening DP-1 components effect eigenvalues eigenvectors elastic scattering energy equa errors escape probability Euler-Lagrange equations Euler-Lagrange system evaluate flux and adjoint geneous given by equation Hence Heterogeneous Adjoint Heterogeneous Flux heterogeneous resonance absorption HETRA-I Homogeneous Adjoint Homogeneous Collision Density homogeneous mixture infinite homogeneous interface Interference Scattering isotropic Kantorovich variational Lagrangian Legendre polynomials lethargy lethargy space linear mean free path mesh points neutron importance neutron transport nuclear numerical procedure obtain ordinary differential equations physical problem quantities reactor resonance cross-section resonance integral resonance region Roussopolos functional simplifying slab cell slab-cell slowing-down solution solve spatial constants spatial dependence spatial distribution Spatial Variation spectrum stationary property subroutine tabulations Taylor series thermal tion trial functions twelve variational method variational principle zero