Performance of the micro-PIC gaseous area detector in small-angle X-ray scattering experiments

2009 ◽  
Vol 16 (2) ◽  
pp. 231-236 ◽  
Author(s):  
Kaori Hattori ◽  
Ken'ichi Tsuchiya ◽  
Kazuki Ito ◽  
Yoko Okada ◽  
Kotaro Fujii ◽  
...  
Keyword(s):  
Small Angle ◽  
Printed Circuit Board ◽  
Dynamic Range ◽  
Photon Counting ◽  
Circuit Board ◽  
X Ray ◽  
Photon Counting Detector ◽  
Area Detector ◽  
X Ray Scattering ◽  
Ray Scattering

The application of a two-dimensional photon-counting detector based on a micro-pixel gas chamber (µ-PIC) to high-resolution small-angle X-ray scattering (SAXS), and its performance, are reported. The µ-PIC is a micro-pattern gaseous detector fabricated by printed circuit board technology. This article describes the performance of the µ-PIC in SAXS experiments at SPring-8. A dynamic range of >105 was obtained for X-ray scattering from a polystyrene sphere solution. A maximum counting rate of up to 5 MHz was observed with good linearity and without saturation. For a diffraction pattern of collagen, weak peaks were observed in the high-angle region in one accumulation of photons.

scholarly journals The new NCPSS BL19U2 beamline at the SSRF for small-angle X-ray scattering from biological macromolecules in solution

2016 ◽  
Vol 49 (5) ◽  
pp. 1428-1432 ◽  
Author(s):  
Na Li ◽  
Xiuhong Li ◽  
Yuzhu Wang ◽  
Guangfeng Liu ◽  
Ping Zhou ◽  
...  
Keyword(s):  
Data Processing ◽  
Small Angle ◽  
Dynamic Range ◽  
Silicon Crystal ◽  
High Dynamic Range ◽  
Biological Macromolecules ◽  
Shanghai Synchrotron Radiation Facility ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

The beamline BL19U2 is located in the Shanghai Synchrotron Radiation Facility (SSRF) and is its first beamline dedicated to biological material small-angle X-ray scattering (BioSAXS). The electrons come from an undulator which can provide high brilliance for the BL19U2 end stations. A double flat silicon crystal (111) monochromator is used in BL19U2, with a tunable monochromatic photon energy ranging from 7 to 15 keV. To meet the rapidly growing demands of crystallographers, biochemists and structural biologists, the BioSAXS beamline allows manual and automatic sample loading/unloading. A Pilatus 1M detector (Dectris) is employed for data collection, characterized by a high dynamic range and a short readout time. The highly automated data processing pipeline SASFLOW was integrated into BL19U2, with help from the BioSAXS group of the European Molecular Biology Laboratory (EMBL, Hamburg), which provides a user-friendly interface for data processing. The BL19U2 beamline was officially opened to users in March 2015. To date, feedback from users has been positive and the number of experimental proposals at BL19U2 is increasing. A description of the new BioSAXS beamline and the setup characteristics is given, together with examples of data obtained.

scholarly journals The modular small-angle X-ray scattering data correction sequence

2017 ◽  
Vol 50 (6) ◽  
pp. 1800-1811 ◽  
Author(s):  
B. R. Pauw ◽  
A. J. Smith ◽  
T. Snow ◽  
N. J. Terrill ◽  
A. F. Thünemann
Keyword(s):  
Small Angle ◽  
Direct Detection ◽  
Photon Counting ◽  
Scattering Data ◽  
X Ray ◽  
Data Correction ◽  
X Ray Scattering ◽  
Uncertainty Estimates ◽  
Wide Range ◽  
Ray Scattering

Data correction is probably the least favourite activity amongst users experimenting with small-angle X-ray scattering: if it is not done sufficiently well, this may become evident only during the data analysis stage, necessitating the repetition of the data corrections from scratch. A recommended comprehensive sequence of elementary data correction steps is presented here to alleviate the difficulties associated with data correction, both in the laboratory and at the synchrotron. When applied in the proposed order to the raw signals, the resulting absolute scattering cross section will provide a high degree of accuracy for a very wide range of samples, with its values accompanied by uncertainty estimates. The method can be applied without modification to any pinhole-collimated instruments with photon-counting direct-detection area detectors.

Solution small-angle X-ray scattering studies on myosin with a multiwire area detector

1991 ◽  
Vol 24 (5) ◽  
pp. 852-856 ◽  
Author(s):  
A. R. Faruqi ◽  
R. A. Cross ◽  
J. Kendrick-Jones
Keyword(s):  
Small Angle ◽  
X Ray ◽  
Area Detector ◽  
X Ray Scattering ◽  
Ray Scattering

Position-Resolved Small-Angle X-ray Scattering of Complex Biological Materials

1997 ◽  
Vol 30 (5) ◽  
pp. 765-769 ◽  
Author(s):  
P. Fratzl ◽  
H. F. Jakob ◽  
S. Rinnerthaler ◽  
P. Roschger ◽  
K. Klaushofer
Keyword(s):  
Small Angle ◽  
Biological Materials ◽  
Fiber Composites ◽  
Fiber Direction ◽  
Mechanical Function ◽  
X Ray ◽  
Area Detector ◽  
X Ray Scattering ◽  
The Individual ◽  
Ray Scattering

Many biological materials, like bone or wood, are hierarchically organized and optimized at all levels for their specific mechanical function. At the lowest level, these materials are fiber composites, where the fiber direction as well as the size of the individual components varies considerably with position inside a given specimen. For bone or wood, some of these parameters can be readily obtained by small-angle X-ray scattering (SAXS) in a position-resolved way. A scanning-SAXS system based on a pinhole camera with rotating anode and area detector is presented, and first applications to the study of bone and wood are reported.

Wide Angle and Small Angle X-ray Scattering Applications Using a Two-Dimensional Area Detector

1990 ◽  
Vol 34 ◽  
pp. 363-368
Author(s):  
B. G. Landes ◽  
R. A. Newman ◽  
P. R. Rudolf
Keyword(s):  
Dynamic Range ◽  
Scattering Data ◽  
Photographic Film ◽  
Scanning System ◽  
Imaging Plate ◽  
Two Dimensional ◽  
X Ray ◽  
Area Detector ◽  
X Ray Scattering ◽  
Ray Scattering

The traditional medium for collecting two-dimensional x-ray scattering patterns is photographic film. While x-ray film has excellent resolution, several factors make it a poor choice as a detection device: slow speed, limited dynamic range, the “human factor” (developing, fixing, film handling), and the lack of a commercial scanning system designed for reading two-dimensional x-ray films. Until recently, there were no practical alternatives to the use of photographic film for obtaining two-dimensional x-ray scattering data using a conventional x-ray source. In the past few years, two different detection systems have become available for collecting high quality two-dimensional x-ray scattering data: (1) the Siemens (Xentronics) area detector system, which is a gas filled, wire grid detector, and (2) the Fuji imaging-plate system, which utilizes a phosphor storage plate for imaging the x-ray scattering and a laser scanner to process the image.

A pixel detector with large dynamic range for high photon counting rates

2002 ◽  
Vol 35 (4) ◽  
pp. 471-476 ◽  
Author(s):  
J.-F. Bérar ◽  
L. Blanquart ◽  
N. Boudet ◽  
P. Breugnon ◽  
B. Caillot ◽  
...  
Keyword(s):  
Room Temperature ◽  
Dynamic Range ◽  
Photon Counting ◽  
Pixel Detector ◽  
Pixel Size ◽  
Large Dynamic Range ◽  
X Ray ◽  
Photon Counting Detector ◽  
X Ray Scattering ◽  
Diffraction Patterns

In this paper, results obtained from a prototype photon counting detector are presented. The pixel size is 330 µm × 330 µm for a total area of 16 µm × 40 mm. The detector works at room temperature and its dynamic response ranges from 0.01 up to 106photons pixel−1s−1. An energy resolution of about 1.5 keV has been measured. Very encouraging small-angle X-ray scattering (SAXS) and diffraction patterns were obtained, demonstrating the success of the prototype. Plans for future developments based on this study are presented.

A Revised O2 Reduction Model in Li-O2 Batteries as Revealed by in Situ Small Angle X-Ray Scattering

2019 ◽  
Author(s):  
Christian Prehal ◽  
Aleksej Samojlov ◽  
Manfred Nachtnebel ◽  
Manfred Kriechbaum ◽  
Heinz Amenitsch ◽  
...  
Keyword(s):  
Small Angle ◽  
Wide Angle ◽  
Reduction Mechanism ◽  
Reduction Model ◽  
X Ray ◽  
X Ray Scattering ◽  
O2 Reduction ◽  
Ray Scattering

<b>Here we use in situ small and wide angle X-ray scattering to elucidate unexpected mechanistic insights of the O2 reduction mechanism in Li-O2 batteries.<br></b>

In situ Time-Resolved Small-Angle X-ray Scattering Reveals the Formation Kinetics of Polyelectrolyte Complex Micelles

2019 ◽  
Author(s):  
Hao Wu ◽  
Jeffrey Ting ◽  
Siqi Meng ◽  
Matthew Tirrell
Keyword(s):  
Small Angle ◽  
Self Assembly ◽  
Electrostatic Interactions ◽  
Polyelectrolyte Complex ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Kinetics Of ◽  
Ray Scattering

We have directly observed the <i>in situ</i> self-assembly kinetics of polyelectrolyte complex (PEC) micelles by synchrotron time-resolved small-angle X-ray scattering, equipped with a stopped-flow device that provides millisecond temporal resolution. This work has elucidated one general kinetic pathway for the process of PEC micelle formation, which provides useful physical insights for increasing our fundamental understanding of complexation and self-assembly dynamics driven by electrostatic interactions that occur on ultrafast timescales.

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