Pressure induced valence change of Eu in EuFe2As2 at low temperature and high pressures probed by resonant inelastic x-ray scattering

2014 ◽  
Vol 104 (4) ◽  
pp. 042601 ◽  
Author(s):  
Ravhi S. Kumar ◽  
Yi Zhang ◽  
Arumugam Thamizhavel ◽  
A. Svane ◽  
G. Vaitheeswaran ◽  
...  
Keyword(s):  
Low Temperature ◽  
High Pressures ◽  
X Ray ◽  
X Ray Scattering ◽  
Valence Change ◽  
Ray Scattering

Analysis of inelastic x-ray scattering spectra of low-temperature water

2000 ◽  
Vol 61 (2) ◽  
pp. 1518-1526 ◽  
Author(s):  
C. Y. Liao ◽  
S. H. Chen ◽  
F. Sette
Keyword(s):  
Low Temperature ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Spectra ◽  
Temperature Water ◽  
Ray Scattering

High-pressure developments for resonant X-ray scattering experiments at I16

2020 ◽  
Vol 27 (2) ◽  
pp. 351-359
Author(s):  
I. Povedano ◽  
A. Bombardi ◽  
D. G. Porter ◽  
M. Burt ◽  
S. Green ◽  
...  
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
The Body ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Geometry ◽  
Diamond Anvil ◽  
Membrane Cell ◽  
Ray Scattering

An experimental setup to perform high-pressure resonant X-ray scattering (RXS) experiments at low temperature on I16 at Diamond Light Source is presented. The setup consists of a membrane-driven diamond anvil cell, a panoramic dome and an optical system that allows pressure to be measured in situ using the ruby fluorescence method. The membrane cell, inspired by the Merrill–Bassett design, presents an asymmetric layout in order to operate in a back-scattering geometry, with a panoramic aperture of 100° in the top and a bottom half dedicated to the regulation and measurement of pressure. It is specially designed to be mounted on the cold finger of a 4 K closed-cycle cryostat and actuated at low-temperature by pumping helium into the gas membrane. The main parts of the body are machined from a CuBe alloy (BERYLCO 25) and, when assembled, it presents an approximate height of 20–21 mm and fits into a 57 mm diameter. This system allows different materials to be probed using RXS in a range of temperatures between 30 and 300 K and has been tested up to 20 GPa using anvils with a culet diameter of 500 µm under quasi-cryogenic conditions. Detailed descriptions of different parts of the setup, operation and the developed methodology are provided here, along with some preliminary experimental results.

An X-ray scattering study of the low-temperature phase transitions of LiKSO4

1995 ◽  
Vol 7 (44) ◽  
pp. 8445-8452 ◽  
Author(s):  
A Desert ◽  
A Gibaud ◽  
A Righi ◽  
U A Leitao ◽  
R L Moreira
Keyword(s):  
Phase Transitions ◽  
Low Temperature ◽  
Temperature Phase ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Low Temperature Phase ◽  
Ray Scattering

scholarly journals Wide-angle X-ray scattering and molecular dynamics simulations of supercooled protein hydration water

2021 ◽  
Author(s):  
Maddalena Bin ◽  
Rafat Yousif ◽  
Sharon Berkowicz ◽  
Sudipta Das ◽  
Daniel Schlesinger ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Low Temperature ◽  
Molecular Dynamics Simulations ◽  
Protein Hydration ◽  
Hydration Water ◽  
Wide Angle ◽  
X Ray ◽  
X Ray Scattering ◽  
Dynamics Simulations ◽  
Ray Scattering

Understanding the mechanism responsible for the protein low-temperature crossover observed at T≈220K can help us improve current cryopreservation technologies. This crossover is associated with changes in the dynamics of the...

scholarly journals Resonant inelastic X-ray scattering of magnetic excitations under pressure

2019 ◽  
Vol 26 (5) ◽  
pp. 1725-1732 ◽  
Author(s):  
Matteo Rossi ◽  
Christian Henriquet ◽  
Jeroen Jacobs ◽  
Christian Donnerer ◽  
Stefano Boseggia ◽  
...  
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Energy Resolution ◽  
Low Energy ◽  
Polarization Analysis ◽  
Magnetic Excitations ◽  
X Ray ◽  
X Ray Scattering ◽  
Sample Environment ◽  
Ray Scattering

Resonant inelastic X-ray scattering (RIXS) is an extremely valuable tool for the study of elementary, including magnetic, excitations in matter. The latest developments of this technique have mostly been aimed at improving the energy resolution and performing polarization analysis of the scattered radiation, with a great impact on the interpretation and applicability of RIXS. Instead, this article focuses on the sample environment and presents a setup for high-pressure low-temperature RIXS measurements of low-energy excitations. The feasibility of these experiments is proved by probing the magnetic excitations of the bilayer iridate Sr3Ir2O7 at pressures up to 12 GPa.

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