Levitation apparatus for neutron diffraction investigations on high temperature liquids

被引:59
作者
Hennet, Louis
Pozdnyakova, Irina
Bytchkov, Aleksei
Cristiglio, Viviana
Palleau, Pierre
Fischer, Henry E.
Cuello, Gabriel J.
Johnson, Mark
Melin, Philippe
Zanghi, Didier
Brassamin, Severine
Brun, Jean-Francois
Price, David L.
Saboungi, Marie-Louise
机构
[1] CNRS, CRMHT, F-45071 Orleans 2, France
[2] ILL Grenoble, F-38042 Grenoble 9, France
[3] CRMD, F-45071 Orleans 2, France
关键词
D O I
10.1063/1.2200756
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We describe a new high temperature environment based on aerodynamic levitation and laser heating designed for neutron scattering experiments up to 3000 degrees C. The sample is heated to the desired temperature with three CO2 lasers from different directions in order to obtain a homogeneous temperature distribution. The apparent temperature of the sample is measured with an optical pyrometer, and two video cameras are employed to monitor the sample behavior during heating. The levitation setup is enclosed in a vacuum-tight chamber, enabling a high degree of gas purity and a reproducible sample environment for structural investigations on both oxide and metallic melts. High-quality neutron diffraction data have been obtained on liquid Y3Al5O12 and ZrNi alloy for relatively short counting times (1.5 h). (c) 2006 American Institute of Physics.
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页数:7
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