Mosaic crystal algorithm for Monte Carlo simulations

P. A. Seeger, L. L. Daemen

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

An algorithm is presented for calculating reflectivity, absorption, and scattering of mosaic crystals in Monte Carlo simulations of neutron instruments. The algorithm uses multi-step transport through the crystal with an exact solution of the Darwin equations at each step. It relies on the kinematical model for Bragg reflection (with parameters adjusted to reproduce experimental data). For computational of thermal effects (the Debye-Waller factor and coherent inelastic scattering), an expansion of the Debye integral as a rapidly converging series of exponential terms is also presented. Any crystal geometry and plane orientation may be treated. The algorithm has been incorporated into the neutron instrument simulation package NISP.

Original languageEnglish
Pages (from-to)S1458-S1461
JournalApplied Physics A: Materials Science and Processing
Volume74
Issue numberSUPPL.II
DOIs
StatePublished - Dec 2002
Externally publishedYes

Fingerprint

Dive into the research topics of 'Mosaic crystal algorithm for Monte Carlo simulations'. Together they form a unique fingerprint.

Cite this