Requirements For And Capabilities Of X-Ray Video Systems To Provide Quantitative Information

1982 ◽  
Author(s):  
O. Nalcioglu ◽  
J. A. Seibert ◽  
W. W. Roeck
Keyword(s):  
Quantitative Information ◽  
X Ray ◽  
Video Systems

scholarly journals Integrated quantitative PIXE analysis and EDX spectroscopy using a laser-driven particle source

2021 ◽  
Vol 7 (3) ◽  
pp. eabc8660
Author(s):  
F. Mirani ◽  
A. Maffini ◽  
F. Casamichiela ◽  
A. Pazzaglia ◽  
A. Formenti ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Materials Science ◽  
Quantitative Information ◽  
Pixe Analysis ◽  
Materials Analysis ◽  
Particle Source ◽  
X Ray ◽  
Analysis Techniques ◽  
Sample Structure ◽  
Elemental Characterization

Among the existing elemental characterization techniques, particle-induced x-ray emission (PIXE) and energy-dispersive x-ray (EDX) spectroscopy are two of the most widely used in different scientific and technological fields. Here, we present the first quantitative laser-driven PIXE and laser-driven EDX experimental investigation performed at the Centro de Láseres Pulsados in Salamanca. Thanks to their potential for compactness and portability, laser-driven particle sources are very appealing for materials science applications, especially for materials analysis techniques. We demonstrate the possibility to exploit the x-ray signal produced by the co-irradiation with both electrons and protons to identify the elements in the sample. We show that, using the proton beam only, we can successfully obtain quantitative information about the sample structure through laser-driven PIXE analysis. These results pave the way toward the development of a compact and multifunctional apparatus for the elemental analysis of materials based on a laser-driven particle source.

Quantitative Phase Analysis By Linear Regression of Chemistry on X-Ray Diffraction Intensity

1987 ◽  
Vol 2 (2) ◽  
pp. 96-98 ◽  
Author(s):  
Jacques Renault
Keyword(s):  
Linear Regression ◽  
Quantitative Information ◽  
Quantitative Phase Analysis ◽  
X Ray Diffraction ◽  
Diffraction Intensity ◽  
Mineralogical Analysis ◽  
X Ray ◽  
Reduction Program ◽  
Speed Of Analysis ◽  
Artificial Mixtures

AbstractXRF and XRD measurements made on a single pressed powder briquet can be combined to give more quantitative information than either technique employed alone. Speed of analysis and simplification of sample preparation are also enhanced. The algorithm presented here uses multiple linear regression of the concentrations of one or more elements on the corrected X-ray diffraction intensities of the phases containing them. The data reduction program runs on a microcomputer. Data are presented to show its application to mineralogical analysis of artificial mixtures of quartz, microcline (a feldspar) and calcite.

scholarly journals In situ monitoring of hydrothermal reactions by X-ray diffraction with Bragg–Brentano geometry

2020 ◽  
Vol 53 (4) ◽  
pp. 1163-1166
Author(s):  
Karsten Mesecke ◽  
Winfried Malorny ◽  
Laurence N. Warr
Keyword(s):  
Quantitative Information ◽  
In Situ Monitoring ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
X Ray ◽  
Saturated Vapour Pressure ◽  
Concrete Production ◽  
Aerated Concrete ◽  
Kinetics Of

This note describes an autoclave chamber developed and constructed by Anton Paar and its application for in situ experiments under hydrothermal conditions. Reactions of crystalline phases can be studied by successive in situ measurements on a conventional laboratory X-ray diffractometer with Bragg–Brentano geometry at temperatures <483 K and saturated vapour pressure <2 MPa. Variations in the intensity of X-ray diffraction reflections of both reactants and products provide quantitative information for studying the reaction kinetics of both dissolution and crystal growth. Feasibility is demonstrated by studying a cementitious mixture used for autoclaved aerated concrete production. During a period of 5.7 h at 466 K and 1.35 MPa, the crystallization of torbermorite and the partial consumption of quartz were monitored.

scholarly journals Characterization of Ultrasonic Bubble Clouds in A Liquid Metal by Synchrotron X-ray High Speed Imaging and Statistical Analysis

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 44 ◽  
Author(s):  
Chuangnan Wang ◽  
Thomas Connolley ◽  
Iakovos Tzanakis ◽  
Dmitry Eskin ◽  
Jiawei Mi
Keyword(s):  
High Speed ◽  
Liquid Metals ◽  
Quantitative Information ◽  
Ultrasonic Waves ◽  
High Speed Imaging ◽  
X Ray ◽  
Processing Strategies ◽  
Solidification Processes ◽  
Bubble Clouds ◽  
Temperature Liquid

Quantitative understanding of the interactions of ultrasonic waves with liquid and solidifying metals is essential for developing optimal processing strategies for ultrasound processing of metal alloys in the solidification processes. In this research, we used the synchrotron X-ray high-speed imaging facility at Beamline I12 of the Diamond Light Source, UK to study the dynamics of ultrasonic bubbles in a liquid Sn-30wt%Cu alloy. A new method based on the X-ray attenuation for a white X-ray beam was developed to extract quantitative information about the bubble clouds in the chaotic and quasi-static cavitation regions. Statistical analyses were made on the bubble size distribution, and velocity distribution. Such rich statistical data provide more quantitative information about the characteristics of ultrasonic bubble clouds and cavitation in opaque, high-temperature liquid metals.

Fast beam monitor diamond-based devices for VUV and X-ray synchrotron radiation applications

2019 ◽  
Vol 26 (2) ◽  
pp. 386-392
Author(s):  
Michele Di Fraia ◽  
Antonio De Sio ◽  
Matias Antonelli ◽  
Renzo Nesti ◽  
Dario Panella ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Temporal Structure ◽  
Control Level ◽  
Fast Response ◽  
Quantitative Information ◽  
Photon Beam ◽  
Light Sources ◽  
X Ray ◽  
Improved Performance ◽  
Beam Parameters

The improved performance of third-generation light sources and the advent of next-generation synchrotron radiation facilities require the use of extremely precise monitoring of the main photon-beam parameters, such as position, absolute and relative intensity, and temporal structure. These parameters, and associated real-time feedbacks, are fundamental at the beamline control level and at the machine control level, to improve the stability of the photon beams and to provide bunch-to-bunch quantitative information. Fast response time, high radiation hardness and visible–blind response are main features of photon-beam monitors for VUV and X-ray synchrotron radiation beamlines; hence diamond-based detectors are outstanding candidates. Here, results are presented of an extensive measurement campaign aiming at optimizing the capabilities of diamond detectors to discern time structures below the 100 ps timescale. A custom-built device has been fabricated and tested at the Italian Synchrotron Radiation Laboratory Elettra in Trieste. The results obtained show that diamond is an excellent material for ultra-fast photon pulses with picosecond time resolution; finally the possibilities for application at free-electron laser sources are discussed.

A method to extract quantitative information in analyzer-based x-ray phase contrast imaging

2003 ◽  
Vol 82 (20) ◽  
pp. 3421-3423 ◽  
Author(s):  
E. Pagot ◽  
P. Cloetens ◽  
S. Fiedler ◽  
A. Bravin ◽  
P. Coan ◽  
...  
Keyword(s):  
Phase Contrast ◽  
Quantitative Information ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
X Ray

Characterization of Polyquinoline Blends Using Small Angle Scattering

1989 ◽  
Vol 171 ◽  
Author(s):  
Wen-Li Wu ◽  
John K. Stille ◽  
Joseph W. Tsang ◽  
Alex J. Parker
Keyword(s):  
Small Angle ◽  
Quantitative Information ◽  
Flexible Chain ◽  
X Ray ◽  
Molecular Dispersion ◽  
Angle Scattering ◽  
Scattering Measurements ◽  
Rigid Rod ◽  
Scattering Contribution

ABSTRACTTo determine the compatibility between the rigid rod and the flexible chain polyquinolines, both small angle x-ray and neutron scattering measurements were conducted on blends containing deuterated flexible chains. The scattering intensities from both x-ray and neutron were reduced to their absolute scales in order to remove the scattering contribution from microvoids which tended to overshadow the signal of molecular origin. Quantitative information regarding the molecular dispersion in a 50/50 rigid rod and flexible chain blend was obtained. The result indicated that this material was partially segregated but not to the point of single component phases.

Fabrication of Platinum-Gold Alloys in Pre-Hispanic South America: Issues of Temperature and Microstructure Control.

1990 ◽  
Vol 185 ◽  
Author(s):  
Carol A. Handwerker ◽  
Heather N. Lechtman ◽  
Ryna B. Marinenko ◽  
David S. Bright ◽  
Dale E. Newbury
Keyword(s):  
Phase Diagram ◽  
Liquid Phase ◽  
South America ◽  
Pacific Coast ◽  
Quantitative Information ◽  
Western World ◽  
South American ◽  
Gold Alloys ◽  
X Ray ◽  
Qualitative And Quantitative

AbstractPlatinum and platinum-gold metallurgy was fully developed by smiths in the Esmeraldas-Tumaco Pacific coast area of present day Ecuador and Colombia long before the arrival of Europeans in South America and centuries before platinum metallurgy became practicable in the Western world. Using gold to sinter together nuggets of native placer platinum, then alternately working and annealing the resultant solid, these South American smiths produced hard, fairly homogeneous platinum-gold alloys of a range of colors for fabrication into items of adornment, and small tools, such as needles, tweezers, awls, and fishhooks.The microstructures and compositions of sintered Pt-Au objects from La Tolita, Ecuador, and of experimentally simulated Pt-Au alloy samples were analyzed using new electron microprobe microanalysis (EPMA) techniques and data from the Pt-Au phase diagram in an effort to determine the fabrication temperatures used by Pre-Hispanic South American smiths. A comparison of EPMA results from the simulated materials with the corresponding results from the La Tolita Pt-Au objects suggests that the Pt-Au objects were never heated as high as 1100°C and probably never contained a liquid phase. As illustrated by this comparison, the qualitative and quantitative information provided by these new digital acquisition and display techniques far exceeds what conventional line scan and x-ray dot maps could provide.

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