Photodissociation dynamics of halogenated aromatic molecules: the case of core-ionized tetrabromothiophene

We studied gas-phase photodissociation of a fully halogenated aromatic molecule, tetrabromothiophene, upon core-shell ionization by using synchrotron radiation and energy-resolved multiparticle coincidence spectroscopy. Photodynamics was initiated by selective soft x-ray...

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Investigation of nanostructured Fe3O4 polypyrrole core-shell composites by X-ray absorbtion spectroscopy and X-ray diffraction using synchrotron radiation

Journal of Nanoparticle Research ◽

10.1007/s11051-008-9536-3 ◽

2008 ◽

Vol 11 (6) ◽

pp. 1429-1439 ◽

Cited By ~ 9

Author(s):

Nicolae Aldea ◽

Rodica Turcu ◽

Alexandrina Nan ◽

Izabella Craciunescu ◽

Ovidiu Pana ◽

...

Keyword(s):

Synchrotron Radiation ◽

Core Shell ◽

X Ray Diffraction ◽

X Ray

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Synchrotron Radiation X-ray Photoelectron Spectroscopy as a Tool To Resolve the Dimensions of Spherical Core/Shell Nanoparticles

The Journal of Physical Chemistry C ◽

10.1021/jp508895u ◽

2014 ◽

Vol 118 (46) ◽

pp. 26621-26628 ◽

Cited By ~ 16

Author(s):

Won Hui Doh ◽

Vasiliki Papaefthimiou ◽

Thierry Dintzer ◽

Véronique Dupuis ◽

Spyridon Zafeiratos

Keyword(s):

Synchrotron Radiation ◽

Photoelectron Spectroscopy ◽

Core Shell ◽

Shell Nanoparticles ◽

X Ray ◽

Spherical Core ◽

Core Shell Nanoparticles

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Annealing Behaviour of Fe-C-N Nanopowder: Formation of Iron/Graphite Core-Shell Structured Nanoparticles

Materials Science Forum ◽

10.4028/www.scientific.net/msf.482.187 ◽

2005 ◽

Vol 482 ◽

pp. 187-190 ◽

Cited By ~ 1

Author(s):

B. David ◽

N. Pizúrová ◽

O. Schneeweiss ◽

Petr Bezdička ◽

J. Filip ◽

...

Keyword(s):

Gas Phase ◽

Iron Nanoparticles ◽

Magnetic Measurements ◽

Core Shell ◽

X Ray Diffraction ◽

X Ray ◽

The Core ◽

Graphite Nanoparticles ◽

The Mean ◽

Core Shell Structure

We are reporting the core-shell structured iron/graphite nanoparticles formed by annealing of a nanopowder. The original Fe-C-N based nanopowder has been synthesized by the laser pyrolysis of gas phase reactants. TEM, XRD, Raman spectroscopy, Mössbauer spectroscopy and magnetic measurements were used for its characterization. Nanopowder was heated up to 800°C at ~ 1 Pa vacuum. Presence of iron nanoparticles with the mean diameter of 40 nm in the annealed state of the nanopowder was confirmed from the width of α-Fe X-ray diffraction lines and their core-shell structure was observed under TEM.

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Are disulfide bonds resilient to double ionization? Insights from coincidence spectroscopy and ab initio calculations

RSC Advances ◽

10.1039/d0ra05979j ◽

2020 ◽

Vol 10 (58) ◽

pp. 35039-35048

Author(s):

Lautaro R. Varas ◽

Felipe Fantuzzi ◽

Lúcia Helena Coutinho ◽

Rafael B. Bernini ◽

Marco Antonio Chaer Nascimento ◽

...

Keyword(s):

Ab Initio Calculations ◽

Ab Initio ◽

Thermodynamic Stability ◽

Disulfide Bonds ◽

Double Ionization ◽

Core Shell ◽

Multiply Charged ◽

Ionization Processes ◽

Shell Ionization ◽

Coincidence Spectroscopy

Disulfide bonds (–S–S–) are severely damaged as a consequence of sulfur core–shell ionization processes, which is related to their low thermodynamic stability in multiply-charged systems.

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Experimental L-series x ray production cross sections for Re by tuning synchrotron radiation across its Li (i=1-3) sub-shell ionization thresholds

Radiation Physics and Chemistry ◽

10.1016/j.radphyschem.2021.109599 ◽

2021 ◽

pp. 109599

Author(s):

Vibha Ayri ◽

Sandeep Kaur ◽

Anil Kumar ◽

M. Czyzycki ◽

A.G. Karydas ◽

...

Keyword(s):

Synchrotron Radiation ◽

Cross Sections ◽

Production Cross ◽

X Ray ◽

Shell Ionization

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SIGMAL: A Program for Calculating L-Shell lonization Cross-Sections

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100097600 ◽

1981 ◽

Vol 39 ◽

pp. 198-199 ◽

Cited By ~ 3

Author(s):

R.F. Egerton

Keyword(s):

Cross Sections ◽

Fortran Program ◽

Absorption Data ◽

X Ray ◽

Atomic Electrons ◽

Energy Dependent ◽

Hydrogenic Model ◽

Electron Energy Loss ◽

X Ray Absorption ◽

Shell Ionization

SIGMAL is a short (∼ 100-line) Fortran program designed to rapidly compute cross-sections for L-shell ionization, particularly the partial crosssections required in quantitative electron energy-loss microanalysis. The program is based on a hydrogenic model, the L1 and L23 subshells being represented by scaled Coulombic wave functions, which allows the generalized oscillator strength (GOS) to be expressed analytically. In this basic form, the model predicts too large a cross-section at energies near to the ionization edge (see Fig. 1), due mainly to the fact that the screening effect of the atomic electrons is assumed constant over the L-shell region. This can be remedied by applying an energy-dependent correction to the GOS or to the effective nuclear charge, resulting in much closer agreement with experimental X-ray absorption data and with more sophisticated calculations (see Fig. 1 ).

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Direct Observation of Monolayer Zones in Al-wt 4% Cu

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100178823 ◽

1990 ◽

Vol 48 (1) ◽

pp. 14-15

Author(s):

B. Jouffrey ◽

D. Dorignac ◽

A. Bourret

Keyword(s):

Solid Solution ◽

Synchrotron Radiation ◽

Direct Observation ◽

Supersaturated Solid Solution ◽

Original Model ◽

X Ray ◽

Image Position

Since the early works on GP zones and the model independently proposed by Preston and Guinier on the first steps of precipitation in supersaturated solid solution of aluminium containing a few percent of copper, many works have been performed to understand the structure of different stages in the sequence of precipitation.The scheme which is generally admitted can be drawn from a work by Phillips.In their original model Guinier and Preston analysed a GP zone as composed of a single (100) copperrich plane surrounded by aluminum atomic planes with a slightly shorter distance from the original plane than in the solid solution.From X-ray measurements it has also been shown that GP1 zones were not only copper monolayer zones. They could be up to a few atomic planes thick. Different models were proposed by Guinier, Gerold, Toman. Using synchrotron radiation, proposals have been recently made.

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