Theory of the soft-x-ray edge problem in simple metals: historical survey and recent developments

1990 ◽  
Vol 62 (4) ◽  
pp. 929-991 ◽  
Author(s):  
K. Ohtaka ◽  
Y. Tanabe
Keyword(s):  
Historical Survey ◽  
X Ray ◽  
Edge Problem ◽  
Recent Developments

Recent Developments In Monochromatic Microprobe X-Ray Fluorescence (MMXRF)

1998 ◽  
Vol 4 (S2) ◽  
pp. 378-379
Author(s):  
Z. W. Chen ◽  
D. B. Wittry
Keyword(s):  
Materials Science ◽  
High Vacuum ◽  
Three Dimensional ◽  
High Sensitivity ◽  
X Rays ◽  
Fluorescence Excitation ◽  
X Ray ◽  
Quantitative Microanalysis ◽  
Recent Developments ◽  
Fifth Order

A monochromatic x-ray microprobe based on a laboratory source has recently been developed in our laboratory and used for fluorescence excitation. This technique provides high sensitivity (ppm to ppb), nondestructive, quantitative microanalysis with minimum sample preparation and does not require a high vacuum specimen chamber. It is expected that this technique (MMXRF) will have important applications in materials science, geological sciences and biological science.Three-dimensional focusing of x-rays can be obtained by using diffraction from doubly curved crystals. In our MMXRF setup, a small x-ray source was produced by the bombardment of a selected target with a focused electron beam and a toroidal mica diffractor with Johann pointfocusing geometry was used to focus characteristic x-rays from the source. In the previous work ∼ 108 photons/s were obtained in a Cu Kα probe of 75 μm × 43 μm in the specimen plane using the fifth order reflection of the (002) planes of mica.

scholarly journals Distributed X-ray photon correlation spectroscopy data reduction using Hadoop MapReduce

2018 ◽  
Vol 25 (4) ◽  
pp. 1135-1143 ◽  
Author(s):  
Faisal Khan ◽  
Suresh Narayanan ◽  
Roger Sersted ◽  
Nicholas Schwarz ◽  
Alec Sandy
Keyword(s):  
Real Time ◽  
Photon Correlation Spectroscopy ◽  
Correlation Spectroscopy ◽  
Frame Rate ◽  
Computational Techniques ◽  
Complex Materials ◽  
Photon Correlation ◽  
X Ray ◽  
Wide Range ◽  
Recent Developments

Multi-speckle X-ray photon correlation spectroscopy (XPCS) is a powerful technique for characterizing the dynamic nature of complex materials over a range of time scales. XPCS has been successfully applied to study a wide range of systems. Recent developments in higher-frame-rate detectors, while aiding in the study of faster dynamical processes, creates large amounts of data that require parallel computational techniques to process in near real-time. Here, an implementation of the multi-tau and two-time autocorrelation algorithms using the Hadoop MapReduce framework for distributed computing is presented. The system scales well with regard to the increase in the data size, and has been serving the users of beamline 8-ID-I at the Advanced Photon Source for near real-time autocorrelations for the past five years.

scholarly journals High-temperature/high-pressure X-ray diffraction: Recent developments

1990 ◽  
Vol 4 (1-6) ◽  
pp. 293-295 ◽  
Author(s):  
D. Schiferl ◽  
S. W. Johnson ◽  
A. S. Zinn
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
X Ray Diffraction ◽  
X Ray ◽  
Recent Developments ◽  
High Temperature High Pressure

scholarly journals Recent developments and future of the GM/CA@APS X-ray crystallography user facility at the Advanced Photon Source

2018 ◽  
Vol 74 (a1) ◽  
pp. a324-a324
Author(s):  
Michael Becker ◽  
Stephen Corcoran ◽  
Dale Ferguson ◽  
Mark Hilgart ◽  
David J. Kissick ◽  
...  
Keyword(s):  
X Ray ◽  
X Ray Crystallography ◽  
Recent Developments ◽  
User Facility ◽  
Photon Source

scholarly journals Recent developments in Bio-SAXS using MetalJet X-ray source

2019 ◽  
Vol 75 (a1) ◽  
pp. a39-a39
Author(s):  
Anasuya Adibhatla ◽  
Julius Hållstedt ◽  
Ulf Lundström ◽  
Mikael Otendal ◽  
Tomi Tuohimaa
Keyword(s):  
X Ray ◽  
Recent Developments

Computer-Aided Detection and Diagnosis for 3D X-Ray Based Breast Imaging

2012 ◽  
pp. 66-85
Author(s):  
Gautam S. Muralidhar ◽  
Alan C. Bovik ◽  
Mia K. Markey
Keyword(s):  
Breast Imaging ◽  
Digital Breast Tomosynthesis ◽  
Future Research ◽  
Computer Aided Detection ◽  
Breast Tomosynthesis ◽  
X Ray ◽  
Computer Aided ◽  
Recent Developments ◽  
Initial Work ◽  
Detection And Diagnosis

The last 15 years has seen the advent of a variety of powerful 3D x-ray based breast imaging modalities such as digital breast tomosynthesis, digital breast computed tomography, and stereo mammography. These modalities promise to herald a new and exciting future for early detection and diagnosis of breast cancer. In this chapter, the authors review some of the recent developments in 3D x-ray based breast imaging. They also review some of the initial work in the area of computer-aided detection and diagnosis for 3D x-ray based breast imaging. The chapter concludes by discussing future research directions in 3D computer-aided detection.

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