scholarly journals The large area detector of LOFT: the Large Observatory for X-ray Timing

Author(s):  
S. Zane ◽  
D. Walton ◽  
T. Kennedy ◽  
M. Feroci ◽  
J.-W Den Herder ◽  
...  

1994 ◽  
Vol 38 ◽  
pp. 277-282
Author(s):  
Danut Dragoi

Abstract (ω, φ) X-ray Diffraetometry is a method of XRD based on two independent variables, ω–the rotation of the sample around an axis contained in the plane of the sample and normal to the incident beam, and-the rotation of the sample in its own plane. Each crystallographic plane has an φ peak position, i.e. diffracted intensity is a maximum at a particular ω position for a given φ position. The incident X-ray beam is considered to be parallel, (a divergence of 0.1 degrees or less is accepted), very narrow (the width of the beam is not critical, a width of 0.1 mm or less is accepted), and monochromatic. The position of the detector is not a necessary variable in this system. Its open X-ray sensitive area collects the photons from the diffracting planes at different positions on that sensitive area. Using the method, the diffraction angles 2θ of different crystallographic planes can be determined without the need for knowing the position of the detector, which is a large area detector, free of slits between the sample and the area sensitive to the X-ray photons. Consequently the detector can be placed in a favorable position such as close to the sample. The method can be applied to any crystal symmetry. If the symmetry of the crystal is known then a theoretical ω(φ) curve can be generated and compared with the experimental data. The difference between these two curves can be easily computed and attributed to the crystallographic lattice distortions of the sample.



2012 ◽  
Author(s):  
S. Zane ◽  
D. Walton ◽  
T. Kennedy ◽  
M. Feroci ◽  
J.-W. Den Herder ◽  
...  


Author(s):  
Brian Rodricks ◽  
Qiang Huang ◽  
Ron Hopf ◽  
Kemei Wang


1972 ◽  
Vol 103 (1) ◽  
pp. 99-108 ◽  
Author(s):  
R.T. Grannan ◽  
R. Koga ◽  
W.A. Millard ◽  
A.M. Preszler ◽  
G.M. Simnett ◽  
...  


2020 ◽  
Vol 27 (2) ◽  
pp. 558-566 ◽  
Author(s):  
J. Kieffer ◽  
V. Valls ◽  
N. Blanc ◽  
C. Hennig

New calibration tools in the pyFAI suite for processing scattering experiments acquired with area detectors are presented. These include a new graphical user interface for calibrating the detector position in a scattering experiment performed with a fixed large area detector, as well as a library to be used in Jupyter notebooks for calibrating the motion of a detector on a goniometer arm (or any other moving table) to perform diffraction experiments.





2013 ◽  
Vol 36 (3) ◽  
pp. 451-477 ◽  
Author(s):  
Riccardo Campana ◽  
Marco Feroci ◽  
Ettore Del Monte ◽  
Teresa Mineo ◽  
Niels Lund ◽  
...  


Author(s):  
J. Pochodzalla ◽  
R. Butsch ◽  
B. Heck ◽  
G. Hlawatsch ◽  
A. Miczaika ◽  
...  


Author(s):  
Boyd Howard ◽  
Larry Gelder

Digital radiography provides an effective means of non-destructively examining the effects of physical tests on the interior structure of a Radioactive Materials Packaging. As such it enables evaluation of the effects of the Hypothetical Accident Conditions Sequential Test on a package, following each step in the test sequence. An introduction to digital radiography is given and application of CCD-based, lens-coupled, large area-detector, digital radiography in the HAC testing of the prototype General Purpose Fissile Packaging is described. The radiographs enable correlation of damage with particular steps in the test sequence.



2017 ◽  
Vol 42 ◽  
pp. 19-27 ◽  
Author(s):  
E. Calva-Coraza ◽  
H. Alva-Sánchez ◽  
T. Murrieta-Rodríguez ◽  
A. Martínez-Dávalos ◽  
M. Rodríguez-Villafuerte


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