Time-Resolved Research at the Advanced Photon Source Beamline 7-ID

2010 ◽  
Author(s):  
Eric M. Dufresne ◽  
Bernhard Adams ◽  
Dohn A. Arms ◽  
Matthieu Chollet ◽  
Eric C. Landahl ◽  
...  
Keyword(s):  
Time Resolved ◽  
Photon Source

scholarly journals Selective time-dependent changes of Cu(DPPE)(DMP)·PF6on photoexcitation

2014 ◽  
Vol 70 (a1) ◽  
pp. C776-C776 ◽  
Author(s):  
Elzbieta Trzop ◽  
Bertrand Fournier ◽  
Katarzyna Jarzembska ◽  
Jesse Sokolow ◽  
Radoslaw Kaminski ◽  
...  
Keyword(s):  
Structural Changes ◽  
Dye Sensitized Solar Cells ◽  
Department Of Energy ◽  
Data Sets ◽  
Monoclinic System ◽  
Time Resolved ◽  
Pump Probe ◽  
Light Emitting Devices ◽  
Potential Applications ◽  
Photon Source

Thanks to their potential applications as light-emitting devices, chemical sensors and dye-sensitized solar cells, heteroleptic copper (I) complexes have been extensively studied. Cu(DPPE)(DMP)·PF6(dppe= 1,2-bis(diphenylphosphino)ethane; dmp = 2,9-dimethyl-1,10-phenanthroline) crystallizes in the monoclinic system, P21/c, with two independent molecules in the asymmetric unit. Previous studies on this system [1,2] show strong temperature-dependent emission. The complex was studied at 90K under 355nm laser excitation. At this temperature, the luminescence decay for Cu(DPPE)(DMP)·PF6is biexponential with lifetimes of ~3μs and ~28μs. Two time-resolved X-ray diffraction techniques were applied for studies: (1) a Laue technique at BioCARS ID-14 beamline at the Advanced Photon Source, and (2) monochromatic diffraction at a newly constructed in-house pump-probe monochromatic facility at the University at Buffalo. Structural changes determined with the two methods are in qualitative agreement; discrepancies in position of the Cu and P atoms were observed. The molecular distortions were smaller than those determined at 16K in the earlier synchrotron study by Vorontsov et al. [2]. Photodeformation maps (see Figure below), in which the increase in temperature on photoexcitation has been eliminated, clearly illustrate the photoinduced atomic shifts for both data sets. Results will be compared with those obtained for other studied heteroleptic copper (I) complexes, for instance Cu[(1,10-phenanthroline-N,N′) bis(triphenylphosphine)]·BF4[3]. The in-house pump-probe facility is discussed by Radoslaw Kaminski at this meeting. Research funded by the National Science Foundation (CHE1213223). BioCARS Sector 14 at APS is supported by NIH (RR007707). The Advanced Photon Source is funded by the Office of Basic Energy Sciences, U.S. Department of Energy, (W-31-109-ENG-38). KNJ is supported by the Polish Ministry of Science and Higher Education through the "Mobility Plus" program.

scholarly journals Materials for energy storage and conversion: Probing functionality with PDF

2014 ◽  
Vol 70 (a1) ◽  
pp. C855-C855
Author(s):  
Karena Chapman
Keyword(s):  
Energy Storage ◽  
Energy Storage And Conversion ◽  
Time Resolved ◽  
Versatile Tool ◽  
Model Independent ◽  
Analytical Approaches ◽  
Electronic Chemical ◽  
Photon Source ◽  
Insight Into

In the last decade, the potential of the pair distribution function (PDF) method as a versatile tool for materials characterization has expanded enormously, driven by accelerated data acquisition (from hours to sub-second) and the advent of dedicated PDF instruments, such as 11-ID-B at the Advanced Photon Source. New time-resolved, in-situ/operando, parametric, and combined experimental capabilities coupled with innovative model-independent approaches to data analysis are being developed to harness the growing potential of this methodology. For example, while the complex multicomponent architecture of batteries and their coupled electronic, chemical and structural transformations complicate investigations of functionality, through the development of new insitu PDF measurement capabilities and analytical approaches, we have been able to gain insight into the structure and reactivity of these electrochemical energy storage systems.[1] This presentation will describe recent studies of electrode reactions during cycling and the atomic structure of electrolytes.[2]

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

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.

Time‐resolved capabilities at the advanced photon source

2003 ◽  
Vol 16 (4) ◽  
pp. 21-33 ◽  
Author(s):  
David Reis ◽  
Lin X. Chen ◽  
Guy Jennings ◽  
Klaus Attenkofer ◽  
Philip Coppens ◽  
...  
Keyword(s):  
Time Resolved ◽  
Photon Source

Technical Reports: Time-Resolved Activities at the Advanced Photon Source Requiring the Pulsed Structure of the X-ray Beam

2005 ◽  
Vol 18 (4) ◽  
pp. 24-31 ◽  
Author(s):  
Jin Wang ◽  
Eric Landahl ◽  
Timothy Graber ◽  
Reinhart Pahl ◽  
Reinhart Pahl ◽  
...  
Keyword(s):  
Time Resolved ◽  
X Ray ◽  
Photon Source

X-Ray Propagation-Based Phase-Enhanced Imaging of Fuel Injectors

2001 ◽  
Author(s):  
Wah-Keat Lee ◽  
Kamel Fezzaa ◽  
Jin Wang
Keyword(s):  
Conventional Radiography ◽  
Fuel Injector ◽  
Line Geometry ◽  
Time Resolved ◽  
Fuel Injectors ◽  
X Ray ◽  
Contrast Mechanism ◽  
Time Resolved Imaging ◽  
Photon Source ◽  
Enhanced Imaging

Abstract X-ray propagation-based phase-enhanced imaging is a powerful new technique that uses the x-ray beam coherence to greatly improve the image contrast. With the high x-ray beam brilliance (or alternately, good beam coherence) available at third-generation synchrotron sources, such as the Advanced Photon Source (APS), propagation-based phase-enhanced imaging can be easily accomplished. The power of this technique lies in its simplicity — it is an in-line geometry and requires little or no beam manipulation, and it works over the entire range of accessible energies (10–100 keV). Unlike conventional radiography, its contrast mechanism is mostly due to Fresnel diffraction and not absorption. The technique works for soft biological samples, as well as thick (several millimeters) stainless-steel samples. In this paper, we demonstrate the utility of this technique to study several fuel injectors and compare the results with conventional absorption radiography. The possibility of extending this technique to time-resolved imaging studies on the fuel injector will be discussed.

scholarly journals Mechanisms of Pressure-Induced Phase Transitions by Real-Time Laue Diffraction

Crystals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 672 ◽  
Author(s):  
Dmitry Popov ◽  
Nenad Velisavljevic ◽  
Maddury Somayazulu
Keyword(s):  
High Pressure ◽  
Diagnostic Technique ◽  
Current Status ◽  
Laue Diffraction ◽  
Time Resolved ◽  
In Operando ◽  
Beam Diffraction ◽  
Photon Source ◽  
Microstructural Studies

Synchrotron X-ray radiation Laue diffraction is a widely used diagnostic technique for characterizing the microstructure of materials. An exciting feature of this technique is that comparable numbers of reflections can be measured several orders of magnitude faster than using monochromatic methods. This makes polychromatic beam diffraction a powerful tool for time-resolved microstructural studies, critical for understanding pressure-induced phase transition mechanisms, by in situ and in operando measurements. The current status of this technique, including experimental routines and data analysis, is presented along with some case studies. The new experimental setup at the High-Pressure Collaborative Access Team (HPCAT) facility at the Advanced Photon Source, specifically dedicated for in situ and in operando microstructural studies by Laue diffraction under high pressure, is presented.

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