Ultra-Low Field NMR of rm UF 6 for 235 rm U Detection and Characterization

We have demonstrated the first ultra-low field (ULF) nuclear magnetic resonance measurements of uranium hexafluoride (UF sub(6)), which is used in the uranium enrichment process. A sensitive non-invasive detection system would have an important role in non-proliferation surveillance. A two-frequency...

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Bibliographic Details
Published inIEEE transactions on applied superconductivity Vol. 19; no. 3
Main Authors Magnelind, P E, Matlashov, AN, Volegov, P L, Espy, MA
Format Journal Article
LanguageEnglish
Published 01.01.2009
Subjects
Nuclear magnetic resonance
Relaxation time
Superconductivity
Surveillance
Switching
ULF
Uranium
Uranium hexafluoride
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Summary:We have demonstrated the first ultra-low field (ULF) nuclear magnetic resonance measurements of uranium hexafluoride (UF sub(6)), which is used in the uranium enrichment process. A sensitive non-invasive detection system would have an important role in non-proliferation surveillance. A two-frequency technique was employed to remove the transients induced by rapidly switching off the 50 mT pre-polarization field. A mean transverse relaxation time T sub(2) of 24 ms was estimated for the un-enriched UF sub(6) sample measured at a mean temperature of 80degC.
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ISSN:1051-8223
DOI:10.1109/TASC.2009.2019562