Non-dipolar RF coil for NMR lock and homonuclear decoupling
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United States of America Patent
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Jul 27, 1999
Grant Date -
N/A
app pub date -
Jul 3, 1997
filing date -
Jul 3, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A single-tuned rf-gradient saddle coil is used for an internal NMR lock in a high-field NMR probe. The non-dipolar lock coil geometry is chosen such that its filling factor and Q are maximized subject to the constraint that its coupling coefficient to two orthogonal saddle coils is zero. Various quadrupolar and octopolar rf coils are disclosed for use in NMR probes having three or four sample coils for multi-nuclear triple resonance or homonuclear decoupling.
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