Inelastic x-ray scattering from high pressure fluids in a diamond anvil cell

2009 ◽  
Vol 94 (7) ◽  
pp. 074102 ◽  
Author(s):  
F. A. Gorelli ◽  
M. Santoro ◽  
T. Scopigno ◽  
M. Krisch ◽  
T. Bryk ◽  
...  
Keyword(s):  
High Pressure ◽  
Diamond Anvil Cell ◽  
X Ray ◽  
X Ray Scattering ◽  
Diamond Anvil ◽  
Ray Scattering

Momentum-resolved resonant inelastic X-ray scattering on a single crystal under high pressure

2013 ◽  
Vol 21 (1) ◽  
pp. 131-135 ◽  
Author(s):  
Masahiro Yoshida ◽  
Kenji Ishii ◽  
Ignace Jarrige ◽  
Tetsu Watanuki ◽  
Kazutaka Kudo ◽  
...  
Keyword(s):  
High Pressure ◽  
Single Crystal ◽  
Diamond Anvil Cell ◽  
Ambient Pressure ◽  
Electronic Excitations ◽  
X Ray ◽  
X Ray Scattering ◽  
Angle Condition ◽  
Diamond Anvil ◽  
Ray Scattering

A single-crystal momentum-resolved resonant inelastic X-ray scattering (RIXS) experiment under high pressure using an originally designed diamond anvil cell (DAC) is reported. The diamond-in/diamond-out geometry was adopted with both the incident and scattered beams passing through a 1 mm-thick diamond. This enabled us to cover wide momentum space keeping the scattering angle condition near 90°. Elastic and inelastic scattering from the diamond was drastically reduced using a pinhole placed after the DAC. Measurement of the momentum-resolved RIXS spectra of Sr2.5Ca11.5Cu24O41at the CuK-edge was thus successful. Though the inelastic intensity becomes weaker by two orders than the ambient pressure, RIXS spectra both at the center and the edge of the Brillouin zone were obtained at 3 GPa and low-energy electronic excitations of the cuprate were found to change with pressure.

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.

A compact system for generating extreme pressures and temperatures: An application of laser-heated diamond anvil cell to inelastic X-ray scattering

2013 ◽  
Vol 84 (11) ◽  
pp. 113902 ◽  
Author(s):  
Hiroshi Fukui ◽  
Takeshi Sakai ◽  
Tatsuya Sakamaki ◽  
Seiji Kamada ◽  
Suguru Takahashi ◽  
...  
Keyword(s):  
Diamond Anvil Cell ◽  
X Ray ◽  
X Ray Scattering ◽  
Diamond Anvil ◽  
Laser Heated ◽  
Ray Scattering

Raman and X-Ray Scattering Studies of High-Pressure Phases of Urea

2005 ◽  
Vol 109 (16) ◽  
pp. 8206-8215 ◽  
Author(s):  
F. J. Lamelas ◽  
Z. A. Dreger ◽  
Y. M. Gupta
Keyword(s):  
High Pressure ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

Sound velocity measurements of hcp Fe-Si alloy at high pressure and high temperature by inelastic X-ray scattering

2018 ◽  
Vol 103 (1) ◽  
pp. 85-90 ◽  
Author(s):  
Takanori Sakairi ◽  
Tatsuya Sakamaki ◽  
Eiji Ohtani ◽  
Hiroshi Fukui ◽  
Seiji Kamada ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Sound Velocity ◽  
Velocity Measurements ◽  
X Ray ◽  
X Ray Scattering ◽  
Ray Scattering

PHASE TRANSITION IN LAYERED PEROVSKITE LIKE MANGANATE Ca3Mn2O7 UNDER HIGH PRESSURE

2001 ◽  
Vol 15 (18) ◽  
pp. 2491-2497 ◽  
Author(s):  
J. L. ZHU ◽  
L. C. CHEN ◽  
R. C. YU ◽  
F. Y. LI ◽  
J. LIU ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Diamond Anvil Cell ◽  
The Other ◽  
Layered Perovskite ◽  
X Ray Diffraction ◽  
Two Phase ◽  
X Ray ◽  
Diamond Anvil

In situ high pressure energy dispersive X-ray diffraction measurements on layered perovskite-like manganate Ca 3 Mn 2 O 7 under pressures up to 35 GPa have been performed by using diamond anvil cell with synchrotron radiation. The results show that the structure of layered perovskite-like manganate Ca 3 Mn 2 O 7 is unstable under pressure due to the easy compression of NaCl-type blocks. The structure of Ca 3 Mn 2 O 7 underwent two phase transitions under pressures in the range of 0~35 GPa. One was at about 1.3 GPa with the crystal structure changing from tetragonal to orthorhombic. The other was at about 9.5 GPa with the crystal structure changing from orthorhombic back to another tetragonal.

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