Modular, triple-resonance, transmission line DNP MAS probe for 500 MHz/330 GHz.

ABSTRACT: We describe the design and construction of a modular, triple-resonance, fully balanced, DNP-MAS probe based on transmission line technology and its integration into a 500 MHz/330 GHz DNP-NMR spectrometer. A novel quantitative probe design and characterization strategy is developed and employed to achieve optimal sensitivity, RF homogeneity and excellent isolation between channels. The resulting three channel HCN probe has a modular design with each individual, swappable module being equipped with connectorized, transmission line ports. This strategy permits attachment of a mating connector that facilitates accurate impedance measurements at these ports and allows characterization and adjustment (e.g. for balancing or tuning/matching) of each component individually. The RF performance of th

SUBMITTER: Reese M 

PROVIDER: S-EPMC6766420 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature