Density measurement of Fe3C liquid using X-ray absorption image up to 10 GPa and effect of light elements on compressibility of liquid iron

2010 ◽  
Vol 115 (B6) ◽  
Author(s):  
H. Terasaki ◽  
K. Nishida ◽  
Y. Shibazaki ◽  
T. Sakamaki ◽  
A. Suzuki ◽  
...  
Keyword(s):  
Liquid Iron ◽  
Density Measurement ◽  
Light Elements ◽  
X Ray ◽  
X Ray Absorption ◽  
Effect Of Light

New Opportunities to Study Defects by Soft X-Ray Absorption Fine Structure

2007 ◽  
Vol 131-133 ◽  
pp. 473-478
Author(s):  
Federico Boscherini ◽  
D. De Salvador ◽  
G. Bisognin ◽  
G. Ciatto
Keyword(s):  
Fine Structure ◽  
Local Structure ◽  
Light Elements ◽  
Semiconductor Physics ◽  
X Ray ◽  
Absorption Fine ◽  
Radiation Sources ◽  
Structure Investigations ◽  
X Ray Absorption ◽  
Semiconductor Properties

X-ray absorption fine structure can determine the local structure of most atoms in the periodic table. The great recent improvements in the performance of synchrotron radiation sources and techniques and advances in the simulations of the spectra have opened new opportunities, especially in the study of dilute systems in the soft X-ray range. In this contribution we will show some recent results that demonstrate how semiconductor physics may greatly benefit from such progress. In fact, doping or alloying of semiconductors with light elements, that have K absorption edges in the soft X-ray range, is widely employed to tune semiconductor properties. X-ray absorption fine structure investigations on such systems can give an important contribution towards the understanding and optimization of technological processes.

scholarly journals Use of X-ray Scattering in Absorption Corrections for X-ray Fluorescence Analysis of Aerosol Loaded Filters

1976 ◽  
Vol 20 ◽  
pp. 497-506
Author(s):  
K. K. Nielson ◽  
S. R. Garcia
Keyword(s):  
Cross Sections ◽  
Heavy Element ◽  
Depth Distribution ◽  
Fluorescence Analysis ◽  
Light Elements ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Cross Sections ◽  
X Ray Absorption ◽  
Penetration Depths

Two methods are described for computing multielement x-ray absorption corrections for aerosol samples collected in IPC-1478 and Whatman 4l filters. The first relies on scatter peak intensities and scattering cross sections to estimate the mass of light elements (Z < l4) in the sample. This mass is used -with the measured heavy element (Z ≥l4) masses to iteratively compute sample absorption corrections. The second method utilizes a linear function of ln(μ) vs. ln(E) determined from the scatter peak ratios and estimates sample mass from the scatter peak intensities. Both methods assume a homogeneous depth distribution of aerosol in a fraction of the front of the filters, and the assumption is evaluated with respect to an exponential aerosol depth distribution. Penetration depths for various real, synthetic and liquid aerosols were measured.

scholarly journals Temperature dependence of X-ray absorption and nuclear magnetic resonance spectra: probing quantum vibrations of light elements in oxides

2017 ◽  
Vol 19 (8) ◽  
pp. 6246-6256 ◽  
Author(s):  
Ruidy Nemausat ◽  
Christel Gervais ◽  
Christian Brouder ◽  
Nicolas Trcera ◽  
Amélie Bordage ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Temperature Dependence ◽  
Light Element ◽  
Thermal Fluctuations ◽  
Light Elements ◽  
X Ray ◽  
Nuclear Magnetic Resonance Spectra ◽  
X Ray Absorption ◽  
Quantum Vibrations

Probing the quantum thermal fluctuations of nuclei in light-element oxides using XANES and NMR spectroscopies.

scholarly journals Some investigations in röntgen spectra. Part II.─X-ray spectr and chemical combination. Sulphur

1931 ◽  
Vol 131 (818) ◽  
pp. 647-653 ◽  
Keyword(s):  
Emission Spectrum ◽  
Experimental Work ◽  
Chemical Compounds ◽  
Light Elements ◽  
X Ray ◽  
Chemical Combination ◽  
Third Line ◽  
X Ray Absorption ◽  
Absorption Edges

A large amount of experimental work has been done to show an effect of chemical combination on X-ray absorption edges. After the first attempt of Wentzel, Kossel and others, and still more recently Pauling, have tried to explain the effect; but at the present time it remains far from being clearly understood. The question must be attacked from the side of the emission spectrum also. About the year 1923 Lindh and Lundquist in Professor seigbahn's laboratory at Lund showed an influence of chemical combination on the wave-lengths and structure of the β lines of phosphorus, sulphur and chlorine. Later Bäcklin and Ray showed an effect of chemical combination on the Kα doublet of some light elements. Most surprising shifts in the positions of the components of the doublet were then observed. Recently Lundquist has studied the Kβ group of sulphur in different chemical compounds of this element. This author finds that no other line except β 1 and β x is emitted by any of the compounds. It is interesting to note that Hjalmar has definitely listed a third line β 3 for sulphur. The following investigation was therefore taken up to clarify this point. As will be seen, some interesting facts regarding this question have been brought to light.

Laboratory XAFS spectrometer for x-ray absorption spectra of light elements

1992 ◽  
Vol 21 (2) ◽  
pp. 91-97 ◽  
Author(s):  
Seiichi Yamashita ◽  
Kazuo Taniguchi ◽  
Seiichi Nomoto ◽  
Toshio Yamaguchi ◽  
Hisanobu Wakita
Keyword(s):  
Absorption Spectra ◽  
Light Elements ◽  
X Ray ◽  
X Ray Absorption
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