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Challenges and Solutions for Handling and Characterizing Alkali-Tc-Oxide Salts

Published online by Cambridge University Press:  08 February 2018

Jamie L. Weaver
Affiliation:
Department of Chemistry, Washington State University, Pullman, WA 99164, USAPacific Northwest National Laboratory, Richland, WA 99352, USA
Chuck Soderquist
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352, USA
Nancy Washton
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352, USA
Paul Gassman
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352, USA
Eric Walter
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352, USA
Mark Bowden
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352, USA
Wayne Lukens
Affiliation:
Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
John S. McCloy*
Affiliation:
Department of Chemistry, Washington State University, Pullman, WA 99164, USAPacific Northwest National Laboratory, Richland, WA 99352, USAMaterials Science and Engineering Program and School of Mechanical & Materials Engineering, Washington State University, Pullman, WA 99164, USA
*
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Abstract

Though not often discussed explicitly in literature, sample handling and preparation for advanced characterization techniques is a significant challenge for radiological materials. In this contribution, a detailed description is given of method development associated with characterization of highly radioactive and, in some cases, hygroscopic oxides of technetium. Details are given on developed protocols, fixtures, and tooling designed for x-ray and neutron diffraction, x-ray absorption, Raman spectroscopy, magic angle spinning nuclear magnetic resonance, and electron paramagnetic resonance. In some cases, multiple iterations of improved sample holder design are described. Lessons learned in handling Tc compounds for these and similar characterization methods are discussed.

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Copyright
Copyright © Materials Research Society 2018 

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