Development of a levitation cell for synchrotron radiation experiments at very high temperature

Landron, C.; Launay, X; Rifflet, Jean-Claude; Echegut, Patrick; Auger, Yannick; Ruffier, D.; Coutures, Jean-Pierre; Lemonier, M.; Gailhanou, M.; Bessière, M.; Bazin, Dominique; De×pert, H.

doi:10.1016/s0168-583x(97)00104-3

Cited by 40 publications

(21 citation statements)

References 22 publications

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“…Preliminary experiments done using the high resolution powder diffractometer (HRPD) at the Advanced Science Research Center of the Japan Atomic Energy Research Institute with a solid alumina sample did not reveal any sharp peaks in the background data coming from the furnace materials. This is an advantage compared to other methods for which parts of the levitators generate sharp peaks [63][64][65]. The observed diffraction peak intensities and location were identified as those derived from the mirror indices of hexagonal structure of alumina and were in complete agreement with those reported in the literature [66].…”

Section: Atomic Structure Characterization By Neutron Scattering Expesupporting

confidence: 84%

Electrostatic Levitation Research and Development at JAXA: Past and Present Activities in Thermophysics

2005

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This paper reviews the past and present research and development activities in the field of electrostatic levitation at the Japan Aerospace Exploration Agency (JAXA). Particular emphasis is given on the important innovations of sub-millimeter sample handling, launch levitation initiation, aero-electrostatic hybrid levitation, multi-beam heating geometry, electrode design, and ultraviolet (UV) imaging. A summary of the thermophysical properties of refractory materials measured in their liquid states, above and below their melting point, as well as preliminary results of samples solidified from deep supercooled states are also reported.

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Section: Atomic Structure Characterization By Neutron Scattering Expesupporting

confidence: 84%

Electrostatic Levitation Research and Development at JAXA: Past and Present Activities in Thermophysics

2005

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“…Furnaces have been constructed that exploit electrostatic, 18 acoustic, 19,20 and aerodynamic methods, [21][22][23] where heating is by laser and electromagnetic methods, 24,25 where rf power is used both to heat and support. Of these methods, laser heating methods are particularly suitable for studying nonmetallic systems.…”

Section: Introductionmentioning

confidence: 99%

“…Of these methods, laser heating methods are particularly suitable for studying nonmetallic systems. Originally exploited for high temperature optical 26 and nuclear magnetic resonance ͑NMR͒ spectroscopy, 27 current applications include x-ray diffraction and x-ray absorption fine structure ͑XAFS͒ spectroscopy using synchrotron radiation, 21,23,28 in many cases taking advantage of combined x-ray techniques. 2,5,10,14,15 Temperatures up to 2750°C have been achieved, enabling the structures of refractory oxides in the crystalline, liquid, and undercooled states to be examined for the first time.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic laser-heated contactless furnace for neutron scattering experiments at elevated temperatures

Landron

Hennet

Coutures

et al. 2000

Review of Scientific Instruments

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Conventional radiative furnaces require sample containment that encourages contamination at elevated temperatures and generally need windows which restrict the entrance and exit solid angles required for diffraction and scattering measurements. We describe a contactless windowless furnace based on aerodynamic levitation and laser heating which has been designed for high temperature neutron scattering experiments. Data from initial experiments are reported for crystalline and amorphous oxides at temperatures up to 1900 °C, using the spallation neutron source ISIS together with our laser-heated aerodynamic levitator. Accurate reproduction of thermal expansion coefficients and radial distribution functions have been obtained, demonstrating the utility of aerodynamic levitation methods for neutron scattering methods.

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“…Containerless methods or 'levitation' (Rindone 1982) completely eliminates contact and can access supercooled liquids and atomically clean surfaces. Aerodynamic levitation uses a converging-diverging nozzle (conical nozzle levitation, CNL) to trap a 2-3 mm diameter sample in an upward flow of gas (Landron et al 1997;Mei, Benmore & Weber 2007). The sample can be heated with a laser beam and its temperature measured with an optical pyrometer.…”

Section: Introductionmentioning

confidence: 99%

Instrumentation for structure measurements on highly non-equilibrium materials

et al. 2011

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Containerless techniques (levitation) completely eliminate contact with the sample. This unique sample environment allows deep supercooling of many liquids and avoids contamination of high-temperature melts. Recent experiments at the Advanced Photon Source (APS) high-energy beamline 11 ID-C used aerodynamic levitation with laser beam heating and acoustic levitation with cryogenic cooling. By using these two methods, liquids were studied over much of the temperature range from −40 to +2500°C. This paper briefly describes the instrumentation and its use and is illustrated with examples of measurements on molten oxides and low-temperature liquids.

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Development of a levitation cell for synchrotron radiation experiments at very high temperature

Cited by 40 publications

References 22 publications

Electrostatic Levitation Research and Development at JAXA: Past and Present Activities in Thermophysics

Electrostatic Levitation Research and Development at JAXA: Past and Present Activities in Thermophysics

Aerodynamic laser-heated contactless furnace for neutron scattering experiments at elevated temperatures

Instrumentation for structure measurements on highly non-equilibrium materials

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