A new apparatus design for high temperature (up to 950 °C) quasi-elastic neutron scattering in a controlled gaseous environment

al-Wahish, Amal; Armitage, D.; al-Binni, U.; Mills, R.; Herwig, K. W.; Mandrus, D.; Hill, B.; Jalarvo, N.; Santodonato, L.

doi:10.1063/1.4929580

Journal Article

FZJ-2015-05805

A new apparatus design for high temperature (up to 950 °C) quasi-elastic neutron scattering in a controlled gaseous environment

al-Wahish, A. (Corresponding author) ; Armitage, D. ; al-Binni, U. ; Hill, B. ; Mills, R. ; Jalarvo, N.FZJ* ; Santodonato, L. ; Herwig, K. W. ; Mandrus, D.

2015
American Institute of Physics [S.l.]

Review of scientific instruments 86(9), 095102 (2015) [10.1063/1.4929580]

This record in other databases:

Please use a persistent id in citations: http://hdl.handle.net/2128/16731 doi:10.1063/1.4929580

Abstract: A design for a sample cell system suitable for high temperature Quasi-Elastic Neutron Scattering (QENS) experiments is presented. The apparatus was developed at the Spallation Neutron Source in Oak Ridge National Lab where it is currently in use. The design provides a special sample cell environment under controlled humid or dry gas flow over a wide range of temperature up to 950 °C. Using such a cell, chemical, dynamical, and physical changes can be studied in situ under various operating conditions. While the cell combined with portable automated gas environment system is especially useful for in situ studies of microscopic dynamics under operational conditions that are similar to those of solid oxide fuel cells, it can additionally be used to study a wide variety of materials, such as high temperature proton conductors. The cell can also be used in many different neutron experiments when a suitable sample holder material is selected. The sample cell system has recently been used to reveal fast dynamic processes in quasi-elastic neutron scattering experiments, which standard probes (such as electrochemical impedance spectroscopy) could not detect. In this work, we outline the design of the sample cell system and present results demonstrating its abilities in high temperature QENS experiments.

Classification: