N. Freytag
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View article: Application of Counter-Wound Multi-Arm Spirals in HTS Resonator Design
Application of Counter-Wound Multi-Arm Spirals in HTS Resonator Design Open
Significant sensitivity improvements have been achieved by utilizing high temperature superconducting (HTS) resonators in nuclear magnetic resonance (NMR) probes. Many nuclei such as 13C benefit from strong excitation fields which cannot b…
View article: <sup>13</sup>C-Optimized HTS NMR RF Coil Design at 21.1 T
<sup>13</sup>C-Optimized HTS NMR RF Coil Design at 21.1 T Open
We present the design of a novel high-temperature superconductor double-sided racetrack resonator for a (13)C optimized nuclear magnetic resonance (NMR) transmitter/receiver coil. The coils operate in a 21.1 T magnet and accommodate a 3 mm…
View article: Modeling the Resonance Shifts Due to Coupling Between HTS Coils in NMR Probes
Modeling the Resonance Shifts Due to Coupling Between HTS Coils in NMR Probes Open
Nuclear magnetic resonance (NMR) probes using thin-film HTS coils offer high sensitivity and are particularly suitable for small-sample applications. Typically, HTS probes are optimized for the detection of multiple nuclei and require seve…
View article: Time and Frequency Domain Response of HTS Resonators for Use as NMR Transmit Coils
Time and Frequency Domain Response of HTS Resonators for Use as NMR Transmit Coils Open
Replacing normal metal NMR coils with thin-film high-temperature superconductor (HTS) resonators can significantly improve the sensitivity of analytical NMR. To study the use of these resonators for excitation as well as detection, we inve…