Probe Technology

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High Dielectric Samples

- Reduction in Q
- Shift in resonance frequency
- Loss in efficiency (B1)
- Sample heating




1H channel strongly influenced by
sample X channel minimally influenced



Addressing the Dielectric Problem

- Reduction in Q
     ~ Maximize Q
     ~ Good power handling to compensate
- Shift in resonance freq.
     ~ Broad tuning range
     ~ Minimize effect of sample (balancing,
coil design)
- Loss in efficiency (B1)
     ~ Good power handling to compensate
- Sample heating
     ~ Coil design (reduce electric field generation)
     ~ Scroll coil (Varian)
     ~ Low E field coils (FSU, Doty)



Coils
Gold-plated flat wire is wound around a precision form to make a "flat" coil.
Gold-plated flat wire coil
Copper-claded teflon support.
E Standing Coil


Gold-plated flat wire

Copper-claded teflon support.



Gold-plated flat wire
is soldered to the copper-
claded teflon support.

Copper-cladded teflon


Coaxial Cable Sockets

The grounding plane utilizes socket construction for reliable grounding and ease of maintenance.




50mm Double Resonance



The Resource is supported by the National Institute for Biomedical Imaging and Bioengineering. Grant P41EB002031.

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