The effect of the chemical environment on theKβ/Kα X-ray intensity ratio

AbstractThe intensity ratios of HCO+/HCN and HNC/HCN (1-0) reveal the relative influence of star formation and active galactic nuclei (AGN) or black holes on the circum-nuclear gas of a galaxy, allowing the identification of X-ray dominated regions (XDRs) and Photon-dominated regions (PDRs). It is not always clear in the literature how this intensity ratio calculation has been, or should be performed. This paper discusses ratio calculation methods for interferometric data.

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The influence of the chemical environment on the X-ray rate in the X-ray fluorescence of rock samples

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms ◽

10.1016/0168-583x(89)91064-1 ◽

1989 ◽

Vol 40-41 ◽

pp. 635-637 ◽

Cited By ~ 1

Author(s):

Robert Wood ◽

C.A. Quarles

Keyword(s):

Chemical Environment ◽

X Ray ◽

Rock Samples

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On the prediction of core level binding energies in molecules, surfaces and solids

Physical Chemistry Chemical Physics ◽

10.1039/c7cp08503f ◽

2018 ◽

Vol 20 (13) ◽

pp. 8403-8410 ◽

Cited By ~ 16

Author(s):

Francesc Viñes ◽

Carmen Sousa ◽

Francesc Illas

Keyword(s):

Photoelectron Spectroscopy ◽

State Of The Art ◽

Binding Energies ◽

Core Level ◽

Chemical Environment ◽

X Ray ◽

Unique Information

Core level binding energies, measured by X-ray photoelectron spectroscopy providing unique information regarding the chemical environment of atoms in a system, can be estimated by a diversity of state-of-the-art accurate methods here detailed.

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The Use of the Conventional Isolated Atom Model for the Theoretical Calculation of the Dependence of Lβ/Lα: Intensity Ratio on the Sample Exit Angle for Unoxidized and Oxidized Transition Metal Alloy Thin Films

Advances in X-ray Analysis ◽

10.1154/s0376030800013057 ◽

1991 ◽

Vol 35 (B) ◽

pp. 845-850

Author(s):

Francis Fujiwara ◽

George Andermann

Keyword(s):

Thin Films ◽

Transition Metal ◽

Fluorescence Spectroscopy ◽

Intensity Ratio ◽

Exit Angle ◽

Absorption Coefficients ◽

Theoretical Formulation ◽

Transition Metal Alloy ◽

X Ray ◽

Transition Metal Surfaces

Variable sample exit angle x-ray fluorescence spectroscopy (VEA-XRF) employing the Lβ/Lα intensity ratio for transition metals and their oxides has been shown to be useful for non-destructively studying transition metal surfaces and oxidation, as well as, superconductors. Thus the theoretical formulation of the Lβ/Lα intensity ratio dependence on the sample exit angle, θe, is of some interest and we develop it here. We also present methods of obtaining parameters needed in the formulation, such as Lβ absorption coefficients, which are not available in the literature, for wavelengths greater than about 12Å.

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Intensity Ratio of Fluorescent X-Ray Lines

Nature ◽

10.1038/129315a0 ◽

1932 ◽

Vol 129 (3252) ◽

pp. 315-315 ◽

Cited By ~ 1

Author(s):

G. HEVESY ◽

E. ALEXANDER

Keyword(s):

Intensity Ratio ◽

X Ray

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The Effect of Surface Oxide on the Changes in the FeLII/LIII Ratio with Accelerating Voltage

Advances in X-ray Analysis ◽

10.1154/s0376030800008417 ◽

1970 ◽

Vol 14 ◽

pp. 243-249 ◽

Cited By ~ 1

Author(s):

J. E. Holliday

Keyword(s):

Intensity Ratio ◽

Bulk Material ◽

Surface Oxide ◽

Iron Surface ◽

Oxide Surface ◽

Free Iron ◽

X Ray ◽

Effect Of Surface

AbstractMeasurements have been made on the FeLII/LIII intensity ratio on oxide free iron surface produced by evaporating a 50 Å Ti film on iron. These results show that the reported increase in the FeLII/LIII ratio with decreasing accelerating voltages is due largely to surface oxide and not self absorption. Also, for the vacuum presently used by soft x-ray spectroscopists the oxide surface on metals contribute strongly to the soft x-ray spectra of the bulk material for accelerating voltages below 4 kV.

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