scholarly journals Picosecond pump–probe X-ray scattering at the Elettra SAXS beamline

2020 ◽  
Vol 27 (1) ◽  
pp. 51-59
Author(s):  
Max Burian ◽  
Benedetta Marmiroli ◽  
Andrea Radeticchio ◽  
Christian Morello ◽  
Denys Naumenko ◽  
...  
Keyword(s):  
Theoretical Calculations ◽  
Beam Steering ◽  
Pump Probe ◽  
X Ray ◽  
Superlattice Structure ◽  
X Ray Scattering ◽  
On Line ◽  
Line Beam ◽  
Temporal Overlap ◽  
Ray Scattering

A new setup for picosecond pump–probe X-ray scattering at the Austrian SAXS beamline at Elettra-Sincrotrone Trieste is presented. A high-power/high-repetion-rate laser has been installed on-site, delivering UV/VIS/IR femtosecond-pulses in-sync with the storage ring. Data acquisition is achieved by gating a multi-panel detector, capable of discriminating the single X-ray pulse in the dark-gap of the Elettra hybrid filling mode. Specific aspects of laser- and detection-synchronization, on-line beam steering as well protocols for spatial and temporal overlap of laser and X-ray beam are also described. The capabilities of the setup are demonstrated by studying transient heat-transfer in an In/Al/GaAs superlattice structure and results are confirmed by theoretical calculations.

scholarly journals Combining X-ray scattering and spectroscopy as structure resolving tool

2014 ◽  
Vol 70 (a1) ◽  
pp. C1074-C1074
Author(s):  
Sylvio Haas ◽  
Thomás Plivelic ◽  
Cedric Dicko
Keyword(s):  
Molecular Mechanisms ◽  
Basic Research ◽  
Sample Volume ◽  
Complex Behaviour ◽  
X Ray ◽  
Complex Interactions ◽  
X Ray Scattering ◽  
On Line ◽  
Set Up ◽  
Ray Scattering

Modern applications and basic research in medicine, biotechnology and materials are often concerned with hybrid (organic-inorganic) and synergetic systems. In other words, systems that brings enhanced properties and performances. The challenge is now in the understanding of the complex interactions leading to their assembly and operation. Due to their inherent chemical and structural complexities a combination of several techniques is necessary to determine unambiguously the molecular mechanisms of assembly and operation. [1, 2] To address this need, we have implemented a simultaneous measurement platform called SURF [3] that consists of SAXS, UV-Vis, Raman and fluorescence techniques. The SURF platform provides simultaneous measurements on the same sample volume and a multivariate framework to associate the spectroscopic and X-ray scattering information. Convex constraint analysis (CCA) and two dimensional correlation analyses (2DCOS and 2DHCOS) had been introduced to enhance the interpretation and integration of the data from the different techniques producing self-consistent models and resolving complex behaviour details (structure and chemistry). Additional benefits of the SURF are sample quality control and "on line" diagnostics. In this contribution, we illustrate the benefits of the SURF approach on selected examples. Acknowledgements: The SURF set-up has been mainly financial supported by MAX IV laboratory. S. Haas has a postdoctoral grant of MAX IV lab. S Canton and Q. Zhu are acknowledged for fruitful discussions.

scholarly journals Observation of femtosecond molecular dynamics via pump–probe gas phase x-ray scattering

2016 ◽  
Vol 49 (3) ◽  
pp. 034001 ◽  
Author(s):  
J M Budarz ◽  
M P Minitti ◽  
D V Cofer-Shabica ◽  
B Stankus ◽  
A Kirrander ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Gas Phase ◽  
Pump Probe ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Determination Of The α-Al2O3(0001) Surface Relaxation and Termination by Measurements of Crystal Truncation Rods

1996 ◽  
Vol 437 ◽  
Author(s):  
P. Guenard ◽  
G. Renaud ◽  
A. Barbier ◽  
M. Gautier-Soyer
Keyword(s):  
Surface Structure ◽  
Chemical Nature ◽  
Theoretical Calculations ◽  
Grazing Incidence ◽  
Surface Relaxation ◽  
X Ray ◽  
X Ray Scattering ◽  
Α Al2o3 ◽  
Ray Scattering

AbstractWe have investigated the unreconstructed (0001) surface structure of sapphire (α-Al2O3) by Grazing Incidence X-ray Scattering. Modulations along the crystal truncation rods were analyzed in order to determine the chemical nature of the terminating plane, and the structural relaxations of the first few atomic planes below the surface. The most likely model yields a single Al layer termination with relaxations of the first four planes of -51%, +16%, -29% and +20% respectively. These results compare well with the most recent theoretical calculations on this surface.

Si/Si1 − x Gex Superlattice Structure from X-ray-Scattering Data

2005 ◽  
Vol 34 (4) ◽  
pp. 242-251 ◽  
Author(s):  
S. N. Yakunin ◽  
E. M. Pashaev ◽  
A. A. Zaitsev ◽  
I. A. Subbotin ◽  
M. M. Rzaev ◽  
...  
Keyword(s):  
Scattering Data ◽  
X Ray ◽  
Superlattice Structure ◽  
X Ray Scattering ◽  
Ray Scattering

Absolute scale calibration with use of excess scattering length for small-angle X-ray scattering

2014 ◽  
Vol 47 (2) ◽  
pp. 654-658 ◽  
Author(s):  
Noboru Ohta ◽  
Hiroshi Sekiguchi ◽  
Yuji C. Sasaki ◽  
Naoto Yagi
Keyword(s):  
Small Angle ◽  
Theoretical Calculations ◽  
Scattering Length ◽  
Absolute Intensity ◽  
X Ray ◽  
X Ray Scattering ◽  
Scale Calibration ◽  
Experimental Values ◽  
Calibration Approach ◽  
Ray Scattering

For small-angle X-ray scattering (SAXS) in solution, absolute intensity calibration is an important step to estimate the number of electrons of the sample. In this study, the excess scattering length of 1-bromododecane dispersed in dodecane was determined using that of 1-chlorododecane in the same solvent. The deviation of the experimental values from theoretical calculations obtained using atomic factors was around 1%. It is suggested that the 1-chlorododecane–dodecane system constitutes a new calibration approach that is applicable to various materials over a large energy range generally used in SAXS measurements, and could be less complex and more reliable than conventional methods.

Determination of the α-Ai2O3(0001) Surface Relaxation and Termination by Measurements of Crystal Truncation Rods

1998 ◽  
Vol 05 (01) ◽  
pp. 321-324 ◽  
Author(s):  
P. Guénard ◽  
G. Renaud ◽  
A. Barbier ◽  
M. Gautier-Soyer
Keyword(s):  
Surface Structure ◽  
Chemical Nature ◽  
Theoretical Calculations ◽  
Grazing Incidence ◽  
Surface Relaxation ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

We have investigated the unreconstructed (0001) surface structure of sapphire (α- Al 2 O 3) by grazing incidence X-ray scattering. Modulations along the crystal truncation rods were analyzed in order to determine the chemical nature of the terminating plane, and the structural relaxations of the first few atomic planes below the surfoce. The most likely model yields a single Al layer termination with relaxations of the first four planes of -51%, +16%, -29% and +20% respectively. These results compare well with the most recent theoretical calculations on this surface.

On-Line Mirror Surfacing Monitored by X-ray Shearing Interferometry and X-ray Scattering

2007 ◽  
Author(s):  
E. Ziegler ◽  
L. Peverini ◽  
I. V. Kozhevnikov ◽  
T. Weitkamp ◽  
C. David
Keyword(s):  
Shearing Interferometry ◽  
X Ray ◽  
X Ray Scattering ◽  
On Line ◽  
Ray Scattering
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