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Inelastic x-ray scattering from high pressure fluids in a diamond anvil cell
- Source :
- Applied physics letters 94 (2009): 074102., info:cnr-pdr/source/autori:Gorelli, F. A.; Santoro, M.; Scopigno, T.; Krisch, M.; Bryk, T.; Ruocco, G.; Ballerini, R./titolo:Inelastic x-ray scattering from high pressure fluids in a diamond anvil cell/doi:/rivista:Applied physics letters/anno:2009/pagina_da:074102/pagina_a:/intervallo_pagine:074102/volume:94, Applied Physics Letters
- Publication Year :
- 2009
- Publisher :
- American Institute of Physics., New York [etc.], Stati Uniti d'America, 2009.
-
Abstract
- We present an experimental setup to study terahertz dynamics in fluids under high pressure, employing inelastic x-ray scattering and diamond anvil cell techniques. The use of a carefully designed vacuum chamber and the minimization and control of sources of parasitic scattering allowed circumventing previous limitations due to important empty cell contributions to the scattering signal. The successful implementation of our setup is demonstrated in the case of supercritical fluid argon, for which a full viscoelastic analysis yields the dispersion relation of sound waves, the generalized heat capacity ratio, and longitudinal viscosity. Our results are in excellent agreement with available experimental observables and molecular dynamics simulations.
- Subjects :
- Materials science
Physics and Astronomy (miscellaneous)
Scattering
business.industry
Terahertz radiation
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Acoustic dispersion
Diamond anvil cell
Computational physics
Viscosity
Optics
Dispersion relation
0103 physical sciences
acoustic dispersion
argon
high-pressure effects
specific heat
terahertz waves
viscoelasticity
viscosity
x-ray scattering
Heat capacity ratio
Vacuum chamber
010306 general physics
0210 nano-technology
business
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Applied physics letters 94 (2009): 074102., info:cnr-pdr/source/autori:Gorelli, F. A.; Santoro, M.; Scopigno, T.; Krisch, M.; Bryk, T.; Ruocco, G.; Ballerini, R./titolo:Inelastic x-ray scattering from high pressure fluids in a diamond anvil cell/doi:/rivista:Applied physics letters/anno:2009/pagina_da:074102/pagina_a:/intervallo_pagine:074102/volume:94, Applied Physics Letters
- Accession number :
- edsair.doi.dedup.....7cf16e3414d62dad7090dd876385683c