scholarly journals High Resolution X-ray Spectroscopy: Is It Interesting? Is It Possible?

2005 ◽  
Vol 13 ◽  
pp. 790-792
Author(s):  
Webster Cash
Keyword(s):  
High Resolution ◽  
High Throughput ◽  
Spectral Resolution ◽  
Diffraction Grating ◽  
High Efficiency ◽  
X Ray ◽  
New Science

AbstractThe diffraction grating spectra from Chandra and XMM-Newton have given the astronomical community a huge step forward in x-ray spectroscopy of celestial sources. They have proven the scientific richness of the field. But the spectra have resolution of only 300 to 1000 – low by the standards of the visible and the ultraviolet. We discuss some of the exciting new science that can be addressed if spectral resolution of up to 10,000 (or more) can be achieved in the x-ray. We then show how practical, high efficiency, high resolution x-ray spectrographs can be built for high throughput missions like Constellation-X and XEUS.

scholarly journals Bragg Magnifier: High-efficiency, High-resolution X-ray Detector

2007 ◽  
Author(s):  
Marco Stampanoni ◽  
Amela Groso ◽  
Gunther Borchert ◽  
Rafael Abela
Keyword(s):  
High Resolution ◽  
High Efficiency ◽  
X Ray

scholarly journals Goals for the Application of High-Resolution X-ray Spectroscopy to the Diagnosis of Stellar Coronal Plasmas

1990 ◽  
Vol 115 ◽  
pp. 94-109 ◽  
Author(s):  
Jeffrey L. Linsky
Keyword(s):  
High Resolution ◽  
Spectral Resolution ◽  
Transient Flow ◽  
Emission Measure ◽  
Active Regions ◽  
High Sensitivity ◽  
High Spectral Resolution ◽  
Spectral Features ◽  
Signal To Noise ◽  
X Ray

AbstractI provide examples of how high-resolution x-ray spectra may be used to determine the temperature and emission measure distributions, electron densities, steady and transient flow velocities, and location of active regions in stellar coronae. For each type of measurement I estimate the minimum spectral resolution required to resolve the most useful spectral features. In general, high sensitivity is required to obtain sufficient signal-to-noise to exploit the high spectral resolution. Although difficult, each measurement should be achievable with the instrumentation proposed for AXAF.

High-throughput continuous hydrothermal flow synthesis of Zn–Ce oxides: unprecedented solubility of Zn in the nanoparticle fluorite lattice

2010 ◽  
Vol 368 (1927) ◽  
pp. 4331-4349 ◽  
Author(s):  
Suela Kellici ◽  
Kenan Gong ◽  
Tian Lin ◽  
Sonal Brown ◽  
Robin J. H. Clark ◽  
...  
Keyword(s):  
High Resolution ◽  
High Throughput ◽  
High Surface ◽  
Fluorite Structure ◽  
Synthetic Methods ◽  
Flow Synthesis ◽  
X Ray ◽  
Surface Areas ◽  
Phase Pure ◽  
Hydrothermal Flow

High-throughput continuous hydrothermal flow synthesis has been used as a rapid and efficient synthetic route to produce a range of crystalline nanopowders in the Ce–Zn oxide binary system. High-resolution powder X-ray diffraction data were obtained for both as-prepared and heat-treated (850°C for 10 h in air) samples using the new robotic beamline I11, located at Diamond Light Source. The influence of the sample composition on the crystal structure and on the optical and physical properties was studied. All the nanomaterials were characterized using Raman spectroscopy, UV–visible spectrophotometry, Brunauer–Emmett–Teller surface area and elemental analysis (via energy-dispersive X-ray spectroscopy). Initially, for ‘as-prepared’ Ce 1− x Zn x O y , a phase-pure cerium oxide (fluorite) structure was obtained for nominal values of x =0.1 and 0.2. Biphasic mixtures were obtained for nominal values of x in the range of 0.3–0.9 (inclusive). High-resolution transmission electron microscopy images revealed that the phase-pure nano-CeO 2 ( x =0) consisted of ca 3.7 nm well-defined nanoparticles. The nanomaterials produced herein generally had high surface areas (greater than 150 m 2  g −1 ) and possessed combinations of particle properties (e.g. bandgap, crystallinity, size, etc.) that were unobtainable or difficult to achieve by other more conventional synthetic methods.

High throughput high resolution vortex/Sup TM/ detector for x-ray diffraction

2003 ◽  
Vol 50 (6) ◽  
pp. 2470-2473 ◽  
Author(s):  
J.S. Iwanczyk ◽  
B.E. Patt ◽  
S. Barkan ◽  
L. Feng ◽  
C.R. Tull
Keyword(s):  
High Resolution ◽  
High Throughput ◽  
X Ray Diffraction ◽  
X Ray
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