Influence of chemical effects on the Li (i = 1–3) subshell X-ray spectra for 79Au compounds. (April 2022)

• Record Type: Journal Article
• Authors: Duggal, Heena; Kapil, Ashutosh; Kailash, ; Mehta, D.; Kumar, Sanjeev
• Is Part Of: Radiation physics and chemistry. Volume 193(2022)
• Publication Date: 2022-04
• Subjects: Wavelength dispersive X-ray fluorescence (WDXRF) -- Chemical effect -- X-ray emission -- Spectra -- Chemical shift; Radiation chemistry -- Periodicals; Radiometry -- Periodicals; Radiation -- Periodicals; Chimie sous rayonnement -- Périodiques; 539.2
• DOI: 10.1016/j.radphyschem.2021.109885
• Languages: English
• ISSNs: 0969-806X

Abstract

Abstract: The influence of chemical effects on intensity ratios i.e. I L i / I L α (i = l, β1, β15, 2, 3 and β5/2 ), I L α2 / I L α1, I L j / I L β1 (j = η, γ1 and γ5 ), I L k / I L γ4 (k = β6, 4, β10, 9/1 and γ2, 3, 6 ) and I L β1 / I L γ1 and chemical shift of Ll and L γ1 X-ray emission peaks for 79 Au compound has been investigated using polychromatic high resolution wavelength dispersive X-ray fluorescence (WDXRF). The measured intensity ratios of L X-ray emission spectra were corrected for spectrometers detector efficiencies and self-absorption correction factors. The experimental values of intensity ratios have been compared with the theoretical values evaluated using different set of available fractional emission rates, fluorescence and Coster-Kronig yields. The measurements also report significant energy shift (∼1–7 eV) in Ll and L γ1 X-ray peaks of 79 Au compounds relative to pure elemental form. The discrepancies in measured intensity ratios and shift in L X-ray emission spectra of 79 Au compounds from the theoretical predicated values can be attributed to chemical effects due to core-valence exchange interactions and crystal effects of different ligands attached to central 79 Au atom. Highlights: Influences of chemical environment on L X-ray spectra of 79 Au compounds have been investigated. L X-ray emission spectra of 79 Au compounds were taken using WDXRF and EDXRF techniques. Measurements reports significant variation in intensity ratios of different L X-ray components. Energy shifts of ∼1–7 eV has been notice in Ll and L γ1 X-ray emission spectra of 79 Au compounds. Observed chemical effects are attributed to core-valence exchange interactions and crystal effects.