SCALE Continuous-Energy Eigenvalue Sensitivity Coefficient Calculations

Implicitly Restarted Arnoldi/lanczos Methods for Large Scale Eigenvalue Calculations

This report provides an introductory overview of the numerical solution of large scale algebraic eigenvalue problems. The main focus is on a class of methods called Krylov subspace projection methods. The Lanczos method is the premier member of this class and the Arnoldi method is a generalization to the nonsymmetric case. A recently developed and very promising variant of the Arnoldi/Lanczos s...

Calculations of the energy accommodation coefficient for gas–surface interactions

0301-0104/$ see front matter 2010 Elsevier B.V. A doi:10.1016/j.chemphys.2009.12.018 * Corresponding author. Address: Department of Ph son University, Clemson, SC 29634, USA. Tel.: +1 864 0805. E-mail address: [email protected] (J.R. Manso Calculations are carried out for the energy accommodation coefficient at a gas–surface interface using a recently developed classical mechanical theory of ...

Calculations of absorbed dose and energy dependent of small-scale dosimeters for photons beam therapy

In this study, the energy dependency for dosimeters of air ionization chambers, lithium fluoride, silicon and plastic scintillator has been studied using the MCNPX Monte Carlo simulation code and simulated for gamma energy in the range of radiotherapy energy. The simulation results show that the response of each of the dosimeters for gamma photon beams in the energy range of 0.2 to 20 MeV varie...

II. Eigenvalue Sensitivity Analysis

E$cient eigenvalue calculations in radiative transfer

An e$cient method is used to compute the eigenvalues required in a discrete-ordinates solution to a special class of radiative-transfer problems. The basis for this computation is an algorithm for "nding eigenvalues of a matrix that consists of the sum of a diagonal matrix and a rank-one matrix, a form that can arise in a discrete-ordinates solution of some basic transport problems. To illustra...