Results 1 to 10 of about 2,445,511 (270)

X-ray fluorescence spectroscopy from ions at charged vapor/water interfaces [PDF]

J. Appl. Phys. 105 084911 (2009), 2009
X-ray fluorescence spectra from monovalent ions (Cs+) that accumulate from dilute solutions to form an ion-rich layer near a charged Langmuir monolayer are presented. For the salt solution without the monolayer, the fluorescence signals below the critical angle are significantly lower than the detection sensitivity and only above the critical angle ...
Bu, Wei, Vaknin, David
arxiv   +3 more sources

Laser-based X-ray and electron source for X-ray fluorescence studies [PDF]

, 2016
In this work we present a modification to conventional X-rays fluorescence using electrons as excitation source, and compare it with the traditional X-ray excitation for the study of pigments. For this purpose we have constructed a laser-based source capable to produce X-rays as well as electrons.
Brozas, F. Valle, Conde, A. Peralta, Crego, A., Roso, L.   +3 more
arxiv   +3 more sources

X-ray Fluorescence Sectioning [PDF]

arXiv, 2012
In this paper, we propose an x-ray fluorescence imaging system for elemental analysis. The key idea is what we call "x-ray fluorescence sectioning". Specifically, a slit collimator in front of an x-ray tube is used to shape x-rays into a fan-beam to illuminate a planar section of an object.
Cong, Wenxiang, Wang, Ge
openaire   +3 more sources

Deep learning based rapid X-ray fluorescence signal extraction and image reconstruction for preclinical benchtop X-ray fluorescence computed tomography applications [PDF]

Scientific Reports
Recent research advances have resulted in an experimental benchtop X-ray fluorescence computed tomography (XFCT) system that likely meets the imaging dose/scan time constraints for benchtop XFCT imaging of live mice injected with gold nanoparticles (GNPs)
Amrit Kaphle, Sandun Jayarathna, Sang Hyun Cho   +2 more
doaj   +2 more sources

Correlative single-cell hard X-ray computed tomography and X-ray fluorescence imaging [PDF]

Communications Biology
X-ray computed tomography (XCT) and X-ray fluorescence (XRF) imaging are two non-invasive imaging techniques to study cellular structures and chemical element distributions, respectively.
Zihan Lin, Xiao Zhang, Purbasha Nandi, Yuewei Lin, Liguo Wang, Yong S. Chu, Timothy Paape, Yang Yang, Xianghui Xiao, Qun Liu   +9 more
doaj   +2 more sources

Alteration history of Séítah formation rocks inferred by PIXL x-ray fluorescence, x-ray diffraction, and multispectral imaging on Mars

Science Advances, 2022
Collocated crystal sizes and mineral identities are critical for interpreting textural relationships in rocks and testing geological hypotheses, but it has been previously impossible to unambiguously constrain these properties using in situ instruments ...
M. Tice, J. Hurowitz, A. Allwood, Michael W M Jones, B. Orenstein, Scott Davidoff, Austin P. Wright, D. Pedersen, J. Henneke, N. Tosca, K. Moore, B. Clark, S. McLennan, D. Flannery, A. Steele, Adrian J. Brown, M. Zorzano, K. Hickman‐Lewis, Yang Liu, S. VanBommel, M. Schmidt, T. Kizovski, A. Treiman, L. O'Neil, A. Fairén, D. Shuster, Sanjeev Gupta   +26 more
semanticscholar   +1 more source

X-ray Fluorescence Microscopy Methods for Biological Tissues.

Metallomics, 2022
Synchrotron-based X-ray fluorescence microscopy is a flexible tool for identifying the distribution of trace elements in biological specimens across a broad range of sample sizes.
M. J. Pushie, N. Sylvain, H. Hou, M. Hackett, M. Kelly, S. Webb   +5 more
semanticscholar   +1 more source

Dichroic x-ray fluorescence [PDF]

Physical Review Letters, 1991
We point out that dichroism in x-ray-emission spectra can be studied in fluorescence experiments without resolving the chirality of the emitted radiation, provided the incident photons are circularly polarized. We argue that such experiments would be unique probes of metallic magnetism.
Strange, P, Durham, PJ, Gyorffy, BL
openaire   +3 more sources

Quantitative laser-based x-ray fluorescence and particle-induced x-ray emission

New Journal of Physics, 2022
In this work, we demonstrate the feasibility of quantitative laser-based x-ray fluorescence (XRF) combined with particle-induced x-ray emission (PIXE) (called XPIF for x-ray and particle-induced fluorescence) spectroscopy analysis for elemental ...
Frédéric Boivin, Simon Vallières, Sylvain Fourmaux, Stéphane Payeur, Patrizio Antici   +4 more
doaj   +1 more source

Femtosecond X-Ray Fluorescence [PDF]

Physical Review Letters, 2000
Using few-cycle-driven coherent laser harmonics, K-shell vacancies have been created in light elements, such as boron (E(B) = 188 eV) and carbon (E(B) = 284 eV), on a time scale of a few femtoseconds for the first time. The capability of detecting x-ray fluorescence excited by few-femtosecond radiation with an accuracy of the order of 1 eV paves the ...
Reinhard Kienberger, Ch. Spielmann, Peter Wobrauschek, M. Hentschel, C. Streli, M. Schnürer, Ferenc Krausz   +6 more
openaire   +4 more sources