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Matrix Determination with Scattered Tube Lines
Author(s) -
Wolf Stefan J.
Publication year - 1997
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/(sici)1097-4539(199703)26:2<85::aid-xrs198>3.0.co;2-c
Subject(s) - matrix (chemical analysis) , tube (container) , materials science , composite material
In quantitative x‐ray spectrometry, knowledge of primary and secondary absorption of radiation by the sample matrix is needed. As the mass attenuation coefficient of the matrix cannot be determined directly, a relative mass attenuation coefficient, the matrix factor M has been introduced, which can be determined experimentally using a matrix equation that has been established previously. This paper presents a method for determining a matrix equation which is a simple polynomial expression with parameters easily obtainable with few standard samples of known composition. The matrix factor of an unknown sample may then be determined with an accuracy of <3% mean error without additional preparation using only one standard sample. © 1997 by John Wiley & Sons, Ltd.