Application of deconvolutional treatment to powder diffraction data collected with a Bragg-Brentano diffractometer with a contaminated Cu target and a Ni filter. Issue 3 (September 2020)

• Record Type: Journal Article
• Authors: Ida, Takashi
• Is Part Of: Powder diffraction. Volume 35:Issue 3(2020)
• Page Start: 166
• Page End: 177
• Publication Date: 2020-09
• Subjects: Ni filter, -- Bragg-Brentano geometry, -- deconvolution, -- convolution; Powder metallurgy -- Periodicals; Materials -- Analysis -- Periodicals; 620.1127
• DOI: 10.1017/S0885715620000445
• Languages: English
• ISSNs: 0885-7156

Abstract

Abstract : A deconvolutional method for preprocessing powder diffraction data has been improved. The cumulants of instrumental aberration functions of Bragg-Brentano (Parrish) diffractometer calculated up to the fourth order are presented. The treatments of axial-divergence aberration and the effective spectroscopic profile of the source X-ray have been simplified from those used in previous methods. The current method has been applied to powder diffraction data collected with a Cu-target X-ray tube, used over 20 years, and a Ni-foil K β filter.