Oxide Nanolayers in Stratified Samples Studied by X-Ray Resonant Raman Scattering at Grazing Incidence

Leani, Juan José; Sánchez, Héctor Jorge; Pérez, Carlos A.

doi:10.1155/2015/618279

Cited by 7 publications

(3 citation statements)

References 29 publications

(29 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The analysis of the collected signal shows that hidden on the peak tails there is valuable information about the chemical environment of the atom under study [76]. During the last decade, several works have been published showing the first applications of a novel RIXS tool (named EDIXS) for the discrimination, determination and characterization of chemical environments in a variety of samples and irradiation geometries and even combined with other spectroscopic techniques [76][77][78][79][80][81][82][83][84][85][86]. Due to its versatility, EDIXS was applied in the typical 45 • -45 • setup for inspection of the material bulk, in total reflection for the study of the most external atomic layers of a sample, in grazing incidence used for depth resolved chemical speciation analysis and even in confocal setup to obtain chemical state information in a 3D regime, reaching nanometric spatial resolution.…”

Section: Resonant Inelastic X-ray Scatteringmentioning

confidence: 99%

The Potential of EuPRAXIA@SPARC_LAB for Radiation Based Techniques

et al. 2019

View full text Add to dashboard Cite

A proposal for building a Free Electron Laser, EuPRAXIA@SPARC_LAB, at the Laboratori Nazionali di Frascati, is at present under consideration. This FEL facility will provide a unique combination of a high brightness GeV-range electron beam generated in a X-band RF linac, a 0.5 PW-class laser system and the first FEL source driven by a plasma accelerator. The FEL will produce ultra-bright pulses, with up to 10 12 photons/pulse, femtosecond timescale and wavelength down to 3 nm, which lies in the so called “water window”. The experimental activity will be focused on the realization of a plasma driven short wavelength FEL able to provide high-quality photons for a user beamline. In this paper, we describe the main classes of experiments that will be performed at the facility, including coherent diffraction imaging, soft X-ray absorption spectroscopy, Raman spectroscopy, Resonant Inelastic X-ray Scattering and photofragmentation measurements. These techniques will allow studying a variety of samples, both biological and inorganic, providing information about their structure and dynamical behavior. In this context, the possibility of inducing changes in samples via pump pulses leading to the stimulation of chemical reactions or the generation of coherent excitations would tremendously benefit from pulses in the soft X-ray region. High power synchronized optical lasers and a TeraHertz radiation source will indeed be made available for THz and pump–probe experiments and a split-and-delay station will allow performing XUV-XUV pump–probe experiments.

show abstract

Section: Resonant Inelastic X-ray Scatteringmentioning

confidence: 99%

The Potential of EuPRAXIA@SPARC_LAB for Radiation Based Techniques

et al. 2019

View full text Add to dashboard Cite

show abstract

“…This feature offers also the possibility to perform optimum peak to background X-ray fluorescence (XRF) measurements under the external total reflection irradiation geometry (TXRF analysis), allowing the elemental analysis and characterization of trace and ultratrace quantities of particles and of dried residues deposited on smooth surfaces, such as silicon wafers . Several papers have been published demonstrating the potentiality of external total reflection combined with different spectroscopic techniques, such as XRF, − EXAFS, , and even inelastic X-ray scattering (IXS) at grazing incidence conditions. , Applications of RIXS in total reflection geometry have been already reported using an energy dispersive system, showing a successful discrimination and characterization of arsenic species in water samples, and of different chemical compounds contained in nanolayers …”

Section: X-ray Spectrochemical Techniquementioning

confidence: 99%

Energy-Dispersive Total-Reflection Resonant Inelastic X-ray Scattering as a Tool for Elemental Speciation in Contaminated Water

et al. 2018

View full text Add to dashboard Cite

This work presents a state-of the-art analytical methodology, by which chemical state information on metallic elements is obtained for liquid samples in a fast and simple manner. This method overcomes limitations of conventional X-ray techniques, such as X-ray absorption spectroscopy, by applying resonant inelastic X-ray scattering under total reflection geometry (TRIXS). TRIXS is particularly applicable for the analysis of small quantity of liquid samples deposited on polished reflectors. This feature is relevant for the chemical speciation of metallic trace elements contained in water samples, since the degree of their toxicity depends crucially on the concentration of specific chemical species included. The analytical merits of the proposed methodology were studied at Elettra Sincrotrone Trieste and at the Brazilian Synchrotron Light Laboratory. Contaminated water samples with low concentration of different chromium and manganese compounds were measured. Results prove the analytical potential of the TRIXS technique in characterizing different chemical species of metallic elements in water samples.

show abstract

“…26 The versatility of this technique can be extended to irradiation geometries and experimental setups. Several results were reported in the last few years regarding the application of EDIXS in different geometries with the aim of highlighting specic sample information: 45-45 for bulk inspections, 25,[27][28][29][30] total reection for surface analysis, 26,31 grazing incidence for surface studies [32][33][34] and even confocal setups for 3D explorations. 35 It is interesting to note that EDIXS has already been successfully employed for the discrimination of multilayered metallic samples.…”

Section: Introductionmentioning

confidence: 99%