Local Measurements in Cavitating Flow by Ultra-Fast X-Ray Imaging

2009 ◽  
Author(s):  
O. Coutier-Delgosha ◽  
A. Vabre ◽  
M. Hocevar ◽  
R. Delion ◽  
A. Dazin ◽  
...  
Keyword(s):  
National Laboratory ◽  
Argonne National Laboratory ◽  
Velocity Fields ◽  
Cavitating Flow ◽  
Research Teams ◽  
X Ray ◽  
X Ray Imaging ◽  
Local Measurements ◽  
Velocity Pressure ◽  
Photon Source

The present paper presents an experimental method to measure velocity fields in a cavitating flow. Dynamics of the liquid phase and of the bubbles are both investigated. The measurements are based on ultra fast X-ray imaging performed at the APS (Advanced Photon Source) of the Argonne National Laboratory. This is collaboration between research teams devoted to fluid mechanics (LML laboratory, Laboratory for water and turbine machines) and experts in X-ray imaging (French atomic commission, Argonne National Laboratory). The experimental device consists of a millimetric Venturi test section associated with a transportable hydraulic loop. Various configurations of velocity, pressure, and temperature have been investigated. This first paper focuses on the experimental equipment and process, and also the description of the image processing which is performed to analyze the results and obtain the velocity fields of both phases within the cavitating areas. Promising preliminary results are also presented.

On the structure of aragonite

2005 ◽  
Vol 61 (2) ◽  
pp. 129-132 ◽  
Author(s):  
E. N. Caspi ◽  
B. Pokroy ◽  
P. L. Lee ◽  
J. P. Quintana ◽  
E. Zolotoyabko
Keyword(s):  
High Resolution ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Orthorhombic Symmetry ◽  
X Ray ◽  
Impurity Atoms ◽  
Synchrotron Powder Diffraction ◽  
Refinement Procedure ◽  
Photon Source

High-resolution synchrotron powder diffraction measurements were carried out at the 32-ID beamline of the Advanced Photon Source of Argonne National Laboratory in order to clarify the structure of geological aragonite, a widely abundant polymorph of CaCO3. The investigated crystals were practically free of impurity atoms, as measured by wavelength-dispersive X-ray spectroscopy in scanning electron microscopy. A superior quality of diffraction data was achieved by using the 11-channel 111 Si multi-analyzer of the diffracted beam. Applying the Rietveld refinement procedure to the high-resolution diffraction spectra, we were able to extract the aragonite lattice parameters with an accuracy of about 20 p.p.m. The data obtained unambiguously confirm that pure aragonite crystals have orthorhombic symmetry.

First X-Ray Microprobe and Microspectroscopy Results From The Gsecars Sector At The Advanced Photon Source

1997 ◽  
Vol 3 (S2) ◽  
pp. 905-906
Author(s):  
Mark L. Rivers ◽  
Stephen R. Sutton ◽  
Peter Eng ◽  
Matthew Newville
Keyword(s):  
National Laboratory ◽  
Argonne National Laboratory ◽  
Third Generation ◽  
X Rays ◽  
Environmental Sciences ◽  
X Ray ◽  
State Determination ◽  
X Ray Absorption ◽  
The Magnetic Field ◽  
Photon Source

The Advanced Photon Source (APS) at Argonne National Laboratory is a third-generation synchrotron x-ray source, optimized for producing x-rays from undulators. Such undulator sources provide extremely bright, quasi-monochromatic radiation which is ideal for an x-ray microprobe. Such microprobes can be used for trace element quantification with x-ray fluorescence, or for chemical state determination with x-ray absorption spectroscopy. The GeoSoilEnviroCARS (GSECARS) sector at the APS is building an x-ray microprobe for research in earth, planetary, soil and environmental sciences.The GSECARS undulator source is a standard APS Undulator “A” which is a 3.3 cm period device with 72 periods. The energies of the undulator peaks can be varied by adjusting the gap, and hence the magnetic field of the undulator. The energy of the first harmonic can be varied in this way from approximately 3.1 keV to 14 keV. A measured undulator spectrum is shown in Figure 1.

scholarly journals Development of combined microstructure and structure characterization facility forin situandoperandostudies at the Advanced Photon Source

2018 ◽  
Vol 51 (3) ◽  
pp. 867-882 ◽  
Author(s):  
Jan Ilavsky ◽  
Fan Zhang ◽  
Ross N. Andrews ◽  
Ivan Kuzmenko ◽  
Pete R. Jemian ◽  
...  
Keyword(s):  
Small Angle ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Incident Beam ◽  
Evolutionary Development ◽  
X Ray ◽  
X Ray Scattering ◽  
Wide Range ◽  
Photon Source ◽  
Ray Scattering

Following many years of evolutionary development, first at the National Synchrotron Light Source, Brookhaven National Laboratory, and then at the Advanced Photon Source (APS), Argonne National Laboratory, the APS ultra-small-angle X-ray scattering (USAXS) facility has been transformed by several new developments. These comprise a conversion to higher-order crystal optics and higher X-ray energies as the standard operating mode, rapid fly scan measurements also as a standard operational mode, automated contiguous pinhole small-angle X-ray scattering (SAXS) measurements at intermediate scattering vectors, and associated rapid wide-angle X-ray scattering (WAXS) measurements for X-ray diffraction without disturbing the sample geometry. With each mode using the USAXS incident beam optics upstream of the sample, USAXS/SAXS/WAXS measurements can now be made within 5 min, allowingin situandoperandomeasurement capabilities with great flexibility under a wide range of sample conditions. These developments are described, together with examples of their application to investigate materials phenomena of technological importance. Developments of two novel USAXS applications, USAXS-based X-ray photon correlation spectroscopy and USAXS imaging, are also briefly reviewed.

Ultra-small-angle X-ray scattering at the Advanced Photon Source

2009 ◽  
Vol 42 (3) ◽  
pp. 469-479 ◽  
Author(s):  
Jan Ilavsky ◽  
Pete R. Jemian ◽  
Andrew J. Allen ◽  
Fan Zhang ◽  
Lyle E. Levine ◽  
...  
Keyword(s):  
Cross Sections ◽  
Small Angle ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
X Ray ◽  
X Ray Scattering ◽  
Operational Energy ◽  
Scattering Cross Sections ◽  
Photon Source ◽  
Ray Scattering

The design and operation of a versatile ultra-small-angle X-ray scattering (USAXS) instrument at the Advanced Photon Source (APS) at Argonne National Laboratory are presented. The instrument is optimized for the high brilliance and low emittance of an APS undulator source. It has angular and energy resolutions of the order of 10−4, accurate and repeatable X-ray energy tunability over its operational energy range from 8 to 18 keV, and a dynamic intensity range of 108to 109, depending on the configuration. It further offers quantitative primary calibration of X-ray scattering cross sections, a scattering vector range from 0.0001 to 1 Å−1, and stability and reliability over extended running periods. Its operational configurations include one-dimensional collimated (slit-smeared) USAXS, two-dimensional collimated USAXS and USAXS imaging. A robust data reduction and data analysis package, which was developed in parallel with the instrument, is available and supported at the APS.

The Argonne Advanced Photon Source

1988 ◽  
Vol 143 ◽  
Author(s):  
David E. Moncton
Keyword(s):  
Synchrotron Radiation ◽  
Radiation Source ◽  
Condensed Matter ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
X Rays ◽  
Medical Studies ◽  
X Ray ◽  
Materials Research ◽  
Photon Source

AbstractArgonne National Laboratory is preparing to build a new synchrotron radiation source, the 7-GeV Advanced Photon Source (APS), that will provide the world's most brilliant x-ray beams for research. The APS will produce x-rays for materials research, condensed-matter physics, chemistry, and biological and medical studies by researchers from industry, universities, and national laboratories.

scholarly journals XTIP – the world's first beamline dedicated to the synchrotron X-ray scanning tunneling microscopy technique

2020 ◽  
Vol 27 (3) ◽  
pp. 836-843 ◽  
Author(s):  
Volker Rose ◽  
Nozomi Shirato ◽  
Michael Bartlein ◽  
Alex Deriy ◽  
Tolulope Ajayi ◽  
...  
Keyword(s):  
Scanning Tunneling Microscopy ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Scanning Tunneling ◽  
X Rays ◽  
Tunneling Microscopy ◽  
X Ray ◽  
Microscopy Technique ◽  
Insertion Device ◽  
Photon Source

In recent years, there have been numerous efforts worldwide to develop the synchrotron X-ray scanning tunneling microscopy (SX-STM) technique. Here, the inauguration of XTIP, the world's first beamline fully dedicated to SX-STM, is reported. The XTIP beamline is located at Sector 4 of the Advanced Photon Source at Argonne National Laboratory. It features an insertion device that can provide left- or right-circular as well as horizontal- and vertical-linear polarization. XTIP delivers monochromatic soft X-rays of between 400 and 1900 eV focused into an environmental enclosure that houses the endstation instrument. This article discusses the beamline system design and its performance.

Nanoparticle suspensions studied by x-ray photon correlation spectroscopy

2007 ◽  
Vol 1027 ◽  
Author(s):  
Xinhui Lu ◽  
Simon G. J. Mochrie ◽  
S. Narayanan ◽  
Alec R. Sandy ◽  
Michael Sprung
Keyword(s):  
Silica Nanoparticles ◽  
Binary Mixtures ◽  
Photon Correlation Spectroscopy ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Correlation Spectroscopy ◽  
Photon Correlation ◽  
X Ray ◽  
Nanoparticle Suspensions ◽  
Photon Source

AbstractMultispeckle x-ray photon correlation spectroscopy measurements, carried out at beamline 8-ID at the Advanced Photon Source at Argonne National Laboratory, of opaque suspensions of silica nanoparticles in water and lutidine-water binary mixtures are presented.

scholarly journals Equation of state of hydrous Fo90 ringwoodite to 45 GPa by synchrotron powder diffraction

2005 ◽  
Vol 69 (3) ◽  
pp. 317-323 ◽  
Author(s):  
M. H. Manghnani ◽  
G. Amulele ◽  
J. R. Smyth ◽  
C. M. Holl ◽  
G. Chen ◽  
...  
Keyword(s):  
Equation Of State ◽  
Powder Diffraction ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
X Ray Diffraction ◽  
Third Order ◽  
X Ray ◽  
Synchrotron Powder Diffraction ◽  
Murnaghan Equation ◽  
Photon Source

AbstractThe equation of state of Fo90 hydrous ringwoodite has been measured using X-ray powder diffraction to 45 GPa at the GSECARS beam line at the Advanced Photon Source synchrotron at Argonne National Laboratory. The sample was synthesized at 1400°C and 20 GPa in the 5000 ton multi anvil press at Bayerisches Geoinstitut in Bayreuth. The sample has the formula Mg1.70Fe0.192+ Fe0.023+H0.13- Si1.00O4 as determined by electron microprobe, Fourier transform infrared and Mössbauer spectroscopies, and contains ~0.79% H2O by weight. Compression of the sample had been been measured previously to 11 GPa by single crystal X-ray diffraction. A third-order Birch-Murnaghan equation of state fit to all of the data gives V0 = 530.49±0.07 Å3, K0 = 174.6±2.7 GPa and K' = 6.2±0.6. The effect of 1% H incorporation in the structure on the bulk modulus is large and roughly equivalent to an increase in the temperature of ∼600°C at low pressure. The large value of K' indicates significant stiffening of the sample with pressure so that the effect of hydration decreases with pressure.

scholarly journals High Speed X-Ray Imaging for Nozzle Exit Velocity and Density Distribution Measurements of GDI Nozzles

2017 ◽  
Author(s):  
Raphael Distler ◽  
Christoph Hamann ◽  
Martin Krämer ◽  
Eberhard Kull ◽  
Michael Wensing ◽  
...  
Keyword(s):  
High Speed ◽  
Phase Contrast ◽  
Force Measurement ◽  
National Laboratory ◽  
Measurement Techniques ◽  
Argonne National Laboratory ◽  
X Ray ◽  
X Ray Imaging ◽  
Primary Breakup ◽  
Nozzle Exit Velocity

Investigation of the primary breakup region of gasoline sprays is important for future nozzle development. It improvesthe principal understanding of inner nozzle flow and spray breakup. It also allows validating and developingCFD models. Due to the high optical density common measurement techniques like Phase Doppler Anemometryreach their limit in optical dense sprays as in the primary breakup region. High Speed X-Ray Imaging is capable tomeasure 2D velocity distributions directly at the spray hole exit. For generating the intense X-Ray beam the synchrotronAdvanced Photon Source at Argonne National Laboratory is used. Passing through the spray the X-Raybeam is changed by two different physical principles: absorption and phase contrast. Absorption can be applied tomeasure the density of the spray. Phase contrast is used to visualize the borders of droplets and ligaments withhigh contrast. The accelerated electron bunches inside the synchrotron have a constant period length to each other.This leads to an accurate pulsed X-Ray beam (periodicity: 68 ns). The use of multi exposure with very short X-Raypulses (17 ns) shows the traveled distance of the spray droplets and ligaments. The spray speed (150-250 m/s) iscalculated by dividing these distances with the time gap between two X-Ray pulses. The X-Ray measured densitydistributions and velocity distributions are combined to calculate the spray force rate. The so gained force rate isvalidated with a spray force measurement performed at the Spray Momentum Test Bench (SMTB) at ContinentalAutomotive GmbH. The study is focusing on the measurement setup of High Speed X-Ray Imaging at ArgonneNational Laboratory and the evaluation algorithms.DOI: http://dx.doi.org/10.4995/ILASS2017.2017.4598

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