Год выпуска: 2010 Автор: Fusheng Li Издательство: LAP Lambert Academic Publishing Страниц: 124 ISBN: 9783838328157
Описание
The Monte Carlo library least-squares (MCLLS) approach essentially consists of using Monte Carlo simulation to generate the libraries of all the elements to be analyzed plus any other required background libraries. These libraries are then used in the linear library least-squares (LLS) approach with unknown measured spectra to analyze for all elements in the sample. Iterations of this are used until the LLS values gives satisfactory results. The integrated components include: (1) the Monte Carlo codes such as CEARXRF for forward generation of the necessary elemental library spectra for the LLS calculation for X-ray fluorescence; (2) generation of detector response functions (DRF) for detectors with linear and non-linear responses for Monte Carlo simulation of pulse-height spectra; and (3) the use of the differential operator (DO) technique to make the necessary iterations for non-linear responses practical. In addition, coincidence spectra can also be used in the...
