Selected Area X-ray Luminescence Spectroscopy with the X-ray Milliprobe

1974 ◽  
pp. 339-342
Author(s):  
S. E. Sommer
Keyword(s):  
Luminescence Spectroscopy ◽  
X Ray ◽  
Area X

scholarly journals Wide Area X-ray Surveys for AGN and Starburst Galaxies

2008 ◽  
Author(s):  
Andrew Ptak ◽  
Coryn A.L. Bailer-Jones
Keyword(s):  
Starburst Galaxies ◽  
Wide Area ◽  
X Ray ◽  
Area X

A large area X-ray imager with online linearization and noise suppression

2011 ◽  
Author(s):  
T. He ◽  
R. Durst ◽  
B. L. Becker ◽  
J. Kaercher ◽  
G. Wachter
Keyword(s):  
Noise Suppression ◽  
Large Area ◽  
X Ray ◽  
Area X

Hydrothermal Synthesis of GdVO4:Eu 3+ Phosphors by Optimizing its Preparation Conditions

2011 ◽  
Vol 287-290 ◽  
pp. 1360-1364
Author(s):  
Ying Lin Yan ◽  
Yun Hua Xu ◽  
Juan Wang ◽  
Zhen Xing Luan
Keyword(s):  
Ph Value ◽  
Photo Luminescence ◽  
Luminescence Spectroscopy ◽  
Temperature Reaction ◽  
Hydrothermal Temperature ◽  
Red Emission ◽  
X Ray ◽  
Preparation Conditions ◽  
Optimal Reaction Condition ◽  
Optimal Reaction

Eu3+ -doped GdVO4 powders have been synthesized via a novel hydrothermal method using commercially available Gd2O3, NH4VO3 and Eu2O3 as the reacting precursors. The influences of several important parameters, such as hydrothermal temperature, reaction time and pH value, of the experiment were investigated. The obtained samples were characterized by X-ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), and photo-luminescence spectroscopy (PL). The experimental results showed that the optimal reaction condition was processed at 180°C for 12 h and adjusted pH value to 4. The morphology of products was uniform pseudo-octahedron with a little conglomeration. All the phosphors exhibit the characteristic dominant red emission of Eu3+ ion (5D0 → 7F2) at 618nm.

Area x-ray beam equalization for digital angiography

1999 ◽  
Vol 26 (12) ◽  
pp. 2684-2692 ◽  
Author(s):  
Sabee Molloi ◽  
Jerry Tang ◽  
Tarun Mather ◽  
Yifang Zhou
Keyword(s):  
Digital Angiography ◽  
X Ray ◽  
Area X

Small, Area X-Ray Diffraction Techniques: Errors in Strain Measurement

1987 ◽  
Vol 31 ◽  
pp. 77-85
Author(s):  
Thomas L. Nunes ◽  
Charles C. Goldsmith
Keyword(s):  
Lattice Distortion ◽  
Semiconductor Industry ◽  
Photon Counting ◽  
Random Errors ◽  
X Ray Diffraction ◽  
X Ray ◽  
Analytical Technique ◽  
Beam Displacement ◽  
Counting Statistics ◽  
Area X

AbstractThe semiconductor industry is continually striving'for smaller, denser devices. Microdiffractometry is an analytical technique which endeavors to apply x-ray diffraction techniques for measuring strain and phase information to areas approaching 50 micrometers diameter or less.This study extends the work of Goldsmith and Walker in the measurement of strain using the lattice distortion or sin2(ψ) plot method.The systematic errors arising from both sample and beam displacement relative to the center of rotation of the cample ie examined. A relationship is derived which predicts the influence of these displacements upon the slope of a stress plot. The predictions are compared to experiment.The influence of random errors arising from particle size and photon counting statistics will also be discussed. Guidelines will be presented which will minimize both systematic and random errors.

Balloon Observations of Several Southern X-Ray Sources

1979 ◽  
Vol 3 (5) ◽  
pp. 349-350 ◽  
Author(s):  
J. G. Greenhill ◽  
M. L Duldig ◽  
M. W. Emery ◽  
A. G. Fenton ◽  
K. B. Fenton ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Transient Increase ◽  
Large Area ◽  
Gamma Ray Burst ◽  
X Ray ◽  
The University ◽  
Area X

The University of Tasmania balloon-borne large area X-ray telescope was flown from Alice Springs on 20 November 1978. A number of known X-ray sources were observed and a transient increase believed to be a gamma ray burst was detected.

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