High-pressure instrument for small- and wide-angle x-ray scattering. II. Time-resolved experiments
| Autor: | Sigrid Bernstorff, P. Laggner, K. Pressl, Heinz Amenitsch, Manfred Kriechbaum, Milos Steinhart |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.1149621 |
| Popis: | An instrument to facilitate small- and wide-angle x-ray scattering measurements of samples under elevated hydrostatic pressures or exposed to pressure jumps is described. Pressure from atmospheric up to 0.35 GPa is produced by a motor-driven, piston-type generator and transferred through a network containing pressurizing liquid to a sample cell. The cell, with the optical path length of 1.6 mm, has two Beryllium windows with a total transmission of 0.4 (for x rays of λ=0.154 nm) and low background scattering. Scattering can be observed at angles up to 30°. Samples can be solid or liquid with a minimal volume less than 30 μl and the irradiated volume up to 3 μl. Separation of the samples from the pressurizing medium is accomplished by Teflon pistons. The high-pressure network has two sections separated by a pneumatic valve. The inner section is connected permanently to the cell and the outer one to the pressure generator. For pressure jumps, the outer section is brought to a different pressure level than t... |
| Databáze: | OpenAIRE |
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