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Journal Article

Three-dimensional high-inductance birdcage coil for NQR applications

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Citation

Peshkovsky, A., Cerioni, L., Osan, T., Avdievich, N., & Pusiol, D. (2006). Three-dimensional high-inductance birdcage coil for NQR applications. Solid State Nuclear Magnetic Resonance, 30(2), 75-80. doi:10.1016/j.ssnmr.2006.02.005.


Cite as: http://hdl.handle.net/21.11116/0000-0004-834E-1
Abstract
A birdcage coil capable of operating simultaneously and independently in three orthogonal dimensions has been developed. A co-rotational end-ring mode producing an RF field in the longitudinal direction was utilized in addition to the two common transverse orthogonal modes. Two conductor turns were used for each of the coil's windows, increasing its inductance by a factor of four, thereby, making the coil suitable for low-frequency applications. Two or three-frequency detection can be easily carried out with this device. Orthogonality of the coil's channels allows arbitrarily close frequency positioning of each resonant mode, potentially useful in wide-line NQR studies, in which simultaneous excitation/detection of signals from three adjacent regions of a single wide line can be performed. The coil's performance was evaluated using a three-dimensional scheme, in which a circularly polarized experiment was combined with a linearly polarized measurement at another frequency, resulting in SNR improvement by 55%.