Hybrid x-ray/optical luminescence imaging: Characterization of experimental conditions

Uniform Lu2O3:Eu3+ nanowire arrays were successfully prepared by the sol-gel process using anodic aluminum oxide (AAO) templates. The as-synthesized nanowires are homogeneous, highly ordered, and dense and have a uniform diameter of ~300 nm defined by the AAO templates. The X-ray diffraction and selected area electron diffraction results show that the Lu2O3:Eu3+ nanowires have a polycrystalline cubic structure, and the crystallite size of the Lu2O3:Eu3+ nanowires is confined by the AAO template. The nanowires within the AAO template showed good photoluminescence and X-ray-excited optical luminescence performances for Lu2O3:Eu3+. The emission peaks were attributed to the 5D0 → 7FJ transitions of Eu3+ (J = 0, 1, 2, 3).

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POSITRON FACILITIES TESTS OF THE X-RAYS PRODUCED BY CRYSTALLINE UNDULATORS

Modern Physics Letters B ◽

10.1142/s0217984905008165 ◽

2005 ◽

Vol 19 (03) ◽

pp. 85-98 ◽

Cited By ~ 5

Author(s):

S. BELLUCCI

Keyword(s):

Positron Beam ◽

Precise Determination ◽

X Rays ◽

Experimental Conditions ◽

X Ray ◽

Accelerated Particles

One of the main involvements of the INFN-Laboratori Nazionali di Frascati group in channeling researches is described, i.e. the crystal undulator R & D, with the characterization of the crystal undulator prototypes with SEM and the positron beam. We consider a precise determination of the optimal experimental conditions for channeling of this kind of accelerated particles through such microstructured crystals, as promising candidates for producing X-ray beams.

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X-ray excited optical luminescence imaging of InGaN nano-LEDs

physica status solidi (c) ◽

10.1002/pssc.201100430 ◽

2011 ◽

Vol 9 (3-4) ◽

pp. 628-630 ◽

Cited By ~ 2

Author(s):

G. Martínez-Criado ◽

J. A. Sans ◽

J. Segura-Ruiz ◽

R. Tucoulou ◽

A. V. Solé ◽

...

Keyword(s):

X Ray ◽

Luminescence Imaging ◽

Optical Luminescence

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Determination of Structure, Shape and Sizes of Clusters Using Radial Distribution Functions (RDF) Method

MRS Proceedings ◽

10.1557/proc-272-295 ◽

1992 ◽

Vol 272 ◽

Author(s):

Pavel E. Kolosov ◽

A. V. Bubnov

Keyword(s):

Distribution Functions ◽

Structure Characterization ◽

Radial Distribution Functions ◽

Experimental Conditions ◽

Interatomic Distances ◽

X Ray ◽

Molybdenum Sulfides ◽

X Ray Scattering

ABSTRACTThe theoretical reduced intensity of X-ray scattering i(S) may be calculated for a cluster of any structure using Debye's formula. The comparison of both experimental determination and model calculation of the RDF or i(S) allows, to make a conclusions about structure of materials in a wide region of interatomic distances. This is a very important for direct structure characterization of giant clusters, dispersed molybdenum sulfides etc.. The simple formula for the upper limit of interatomic distances when the data are collected at equidistant step on S – scatterinrg vector, may be used for the optimal experimental conditions selection.

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Capabilities of time-resolved X-ray excited optical luminescence of the Taiwan Photon Source 23A X-ray nanoprobe beamline

Journal of Synchrotron Radiation ◽

10.1107/s1600577519013675 ◽

2020 ◽

Vol 27 (1) ◽

pp. 217-221

Author(s):

Bi-Hsuan Lin ◽

Yu-Hao Wu ◽

Xiao-Yun Li ◽

Hsu-Cheng Hsu ◽

Yu-Cheng Chiu ◽

...

Keyword(s):

Spatial Resolution ◽

Decay Time ◽

Streak Camera ◽

Photonic Materials ◽

Experimental Conditions ◽

Time Resolved ◽

X Ray ◽

Optical Luminescence ◽

Excellent Spatial Resolution ◽

Photon Source

Time-resolved X-ray excited optical luminescence (TR-XEOL) was developed successfully for the 23A X-ray nanoprobe beamline located at the Taiwan Photon Source (TPS). The advantages of the TR-XEOL facility include (i) a nano-focused X-ray beam (<60 nm) with excellent spatial resolution and (ii) a streak camera that can simultaneously record the XEOL spectrum and decay time. Three time spans, including normal (30 ps to 2 ns), hybrid (30 ps to 310 ns) and single (30 ps to 1.72 µs) bunch modes, are available at the TPS, which can fulfil different experimental conditions involving samples with various lifetimes. It is anticipated that TR-XEOL at the TPS X-ray nanoprobe could provide great characterization capabilities for investigating the dynamics of photonic materials.

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Characterization of Quaternary Metal Oxide Films by Synchrotron X-ray Fluorescence Microprobe

Applied Spectroscopy ◽

10.1366/0003702971939749 ◽

1997 ◽

Vol 51 (12) ◽

pp. 1781-1783 ◽

Cited By ~ 3

Author(s):

D. L. Perry ◽

A. C. Thompson ◽

R. E. Russo ◽

X. L. Mao ◽

K. L. Chapman

Keyword(s):

Metal Oxide ◽

Solid Phase ◽

Oxide Phase ◽

Experimental Conditions ◽

X Ray ◽

Boiling Points ◽

Resolution Level ◽

Potassium Oxides ◽

Thermal Techniques

A synchrotron X-ray fluorescence microprobe has been used to study the composition and microstructure of pulsed-laser ablation-deposited films of calcium–nickel–potassium oxides that have applications in heterogeneous catalysis. The films, whose individual metal oxide components have widely varying boiling points and thus prevent a solid-phase synthesis with the use of standard thermal techniques, represent a new quaternary metal oxide phase containing the three elements. Experimental conditions for preparing the films are given. The X-ray fluorescence microprobe data are discussed with respect to both the distribution of the three metals in the films at the micrometer lateral spatial resolution level and the presence of trace amounts of metals that were introduced into the films as contaminants in targets made of the parent three-metal oxide.

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