Using a charge-coupled device (CCD) to simultaneously gather x-ray fluorescence (XRF) and x-ray diffraction (XRD) information

2002 ◽  
Author(s):  
S. Cornaby ◽  
T. D. Grow ◽  
Arturo Reyes-Mena ◽  
Paul W. Moody ◽  
A. Stradling ◽  
...  
Keyword(s):  
X Ray Diffraction ◽  
Charge Coupled Device ◽  
X Ray ◽  
A Charge

Extraction of plutonium-containing microcrystals from Hanford soil using a focused ion beam for single-crystal X-ray diffraction analysis

2019 ◽  
Vol 52 (6) ◽  
pp. 1244-1252 ◽  
Author(s):  
Jordan F. Corbey ◽  
Dallas D. Reilly ◽  
Lucas E. Sweet ◽  
Timothy G. Lach
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Focused Ion Beam ◽  
Crystal Size ◽  
Ion Beam ◽  
X Ray Diffraction ◽  
Charge Coupled Device ◽  
X Ray ◽  
Size Limits ◽  
A Charge

Herein, the successful use of a focused ion beam/scanning electron microscope to prepare microsamples of radioactive single crystals for X-ray diffraction analysis is reported. This technique was used to extract and analyze crystalline Pu-containing particles as small as 28 µm3 from Hanford soil taken from the 216-Z-9 waste crib, which were then crystallographically characterized using single-crystal X-ray diffraction to confirm the cubic structure of PuO2. As a systematic proof of concept, the technique was first tested using UO2 crystals milled into cubic shapes with approximate volumes of 4620, 1331, 125, 8 and 1 µm3, in order to empirically determine the crystal size limits for characterization by a laboratory-based diffractometer with a sealed tube Mo or Ag anode X-ray source and a charge-coupled device detector.

First (3 + 2)-dimensional superspace approach to the structure of levyclaudite-(Sb), a member of the cylindrite-type minerals

2006 ◽  
Vol 62 (5) ◽  
pp. 775-789 ◽  
Author(s):  
Michel Evain ◽  
Vaclav Petricek ◽  
Yves Moëlo ◽  
Colette Maurel
Keyword(s):  
Energy Minimization ◽  
Inorganic Compounds ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Layer Compound ◽  
X Ray ◽  
Density Modulation ◽  
Wavelength Control ◽  
A Charge ◽  
Positively Charged

The structure of synthetic levyclaudite-(Sb), approximately (Pb1 − y Sb y S)1.357[Sn1 − x (Cu2) x S2], has been determined by single-crystal X-ray diffraction on the basis of the (3 + 2)-dimensional superspace approach. This misfit-layer compound, of the cylindrite type, results from the combination of two heavily modulated triclinic Q and H subsystems with a common q wavevector and only one shared reciprocal axis (stacking direction). The Q pseudo-tetragonal layer, ∼(Pb0.70Sb0.30S), derived from the NaCl archetype, is positively charged; the H pseudo-hexagonal layer, ∼(Sn0.85Cu0.30S2), derived from the CdI2 archetype, is negatively charged, owing to the replacement of Sn4+ in an octahedral coordination by Cu+ pairs in an opposite triangular coordination. The analysis shows a strong transverse displacive modulation of the two layers, referred to as a `mondulation', correlated to a maximal Sb site occupation factor in the concavity of the Q layer undulation. The wavelength control of the `mondulation' obeys the vernier principle (14cQ ≅ 13cH ), which would correspond to an energy minimization through a charge transfer density modulation wave, common to all two-dimensional misfit-layer inorganic compounds.

scholarly journals Synchrotron x-ray diffraction study of a charge stripe order in18-dopedLa1.875Ba0.125−xSrxCuO4

2003 ◽  
Vol 67 (14) ◽  
Author(s):  
H. Kimura ◽  
H. Goka ◽  
M. Fujita ◽  
Y. Noda ◽  
K. Yamada ◽  
...  
Keyword(s):  
Diffraction Study ◽  
X Ray Diffraction ◽  
X Ray ◽  
Stripe Order ◽  
Charge Stripe ◽  
A Charge

A High-Speed Signal Processor Using a Digital Divider for Position Sensitive Proportional Counters

1980 ◽  
Vol 24 ◽  
pp. 173-176
Author(s):  
S. Kobashi ◽  
K. Mochiki ◽  
K. Hasegawa ◽  
A. Sekiguchi ◽  
H. Hashizume ◽  
...  
Keyword(s):  
High Speed ◽  
Dead Time ◽  
Present System ◽  
X Ray Diffraction ◽  
Analog To Digital ◽  
X Ray ◽  
System A ◽  
Proportional Counters ◽  
Position Sensitive ◽  
A Charge

Most position sensitive proportional counters (PSPCs) currently used in X-ray diffraction experiments have a dead time longer than 5 μs. Though such PSPCs are useful in measuring weak diffraction diagrams, a faster counter is needed to detect strong X-ray diagrams produced with synchrotron radiation sources. The long dead time of PSPCs using a charge division position read-out is due to the slow analog division circuit plus analog-to-digital converter employed in the present system. A fast processor can be built utilising two high-speed ADCs to digitize voltage signals from the detector, followed by a digital divider to compute position of detected photons. The present paper describes the design of such a processor and some preliminary testings of its performances.

scholarly journals Green synthesis and characterization of cuprous oxide nanoparticles in presence of a bio-surfactant

2014 ◽  
Vol 32 (4) ◽  
pp. 702-708 ◽  
Author(s):  
M. Behera ◽  
G. Giri
Keyword(s):  
Green Synthesis ◽  
Photoelectron Spectroscopy ◽  
Broad Band ◽  
X Ray Diffraction ◽  
Oh Groups ◽  
X Ray ◽  
Transmission Electron ◽  
Fcc Lattice ◽  
Perennial Shrub ◽  
A Charge

AbstractHerein, we report a facile green synthesis of Cu2O nanoparticles (NPs) using copper sulfate as precursor salt and hydrazine hydrate as reducing agent in presence of bio-surfactant (i.e. leaves extract of arka — a perennial shrub) at 60 to 70 °C in an aqueous medium. A broad band centered at 460 nm in absorption spectrum reveals the formation of surfactant stabilized Cu2O NPs. X-ray diffraction pattern of the surfactant stabilized NPs suggests the formation of only Cu2O phase in assistance of a bio-surfactant with the crystallite size of ∼8 nm. A negative zeta potential of −12 mV at 8.0 pH in surfactant stabilized Cu2O NPs hints non-bonding electron transfer from O-atom of saponin to the surface of NP. Red-shift in the vibrational band (Cu-O stretching) of Cu2O from 637 cm−1 to 640 cm−1 in presence of bio-surfactant suggests an interfacial interaction between NPs and O-atoms of -OH groups of saponin present in the plant (i.e. Calotropis gigantean) extract. From X-ray photoelectron spectroscopy spectra, a decrease in binding energy of both 2p3/2 and 2p1/2 bands in Cu2O with saponin molecules as compared to bulk Cu atom reveals a charge transfer interaction between NP and saponin surfactant molecules. Transmission electron microscopy images show crystalline nature of Cu2O NPs with an fcc lattice.

Characterization of an x-ray framing camera utilizing a charge coupled device or film as recording media

1998 ◽  
Vol 69 (12) ◽  
pp. 4054-4060 ◽  
Author(s):  
L. M. Logory ◽  
D. R. Farley ◽  
A. D. Conder ◽  
E. A. Belli ◽  
P. M. Bell ◽  
...  
Keyword(s):  
Recording Media ◽  
Charge Coupled Device ◽  
X Ray ◽  
A Charge ◽  
Framing Camera

Development of a high-resolution x-ray imaging system with a charge-coupled-device detector coupled with crystal x-ray magnifiers

2000 ◽  
Vol 71 (12) ◽  
pp. 4449 ◽  
Author(s):  
K. Sato ◽  
Y. Hasegawa ◽  
K. Kondo ◽  
K. Miyazaki ◽  
T. Matsushita ◽  
...  
Keyword(s):  
High Resolution ◽  
Imaging System ◽  
Charge Coupled Device ◽  
X Ray ◽  
X Ray Imaging ◽  
A Charge

Energy spectrometer on a diffractometer using a charge-coupled device X-ray detector

2006 ◽  
Vol 39 (5) ◽  
pp. 767-770
Author(s):  
Hiroshi Abe ◽  
Hiroyuki Saitoh ◽  
Hironori Nakao ◽  
Kazuki Ito ◽  
Ken-ichi Ohshima
Keyword(s):  
Pyrolytic Graphite ◽  
High Energy ◽  
Energy Spectra ◽  
Time Data ◽  
Charge Coupled Device ◽  
X Ray ◽  
High Energy Accelerator ◽  
X Ray Scattering ◽  
Energy Spectrometer ◽  
A Charge

A charge-coupled device (CCD) X-ray detector for inelastic X-ray scattering was installed at beamline BL-4C of the Photon Factory at the High Energy Accelerator Research Organization in Japan. A wavelength-dispersive X-ray spectrometer was mounted on a six-circle diffractometer. Energy spectra were obtained by the CCD X-ray detector and a curved highly oriented pyrolytic graphite analyser. By the combination of energy spectroscopy and diffraction, simultaneous real-time data acquisition of both the momentum and the energy transfer was performed.

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