Enhancement in low field nuclear magnetic resonance with a high- Tc superconducting quantum interference device and hyperpolarized H3 e

Shu-Hsien Liao, Hong-Chang Yang, Herng-Er Horng, Hsin Hsien Chen, Shieh-Yueh Yang, Ming Jye Chen, Chang Hau Yang

    Research output: Contribution to journalArticle

    18 Citations (Scopus)

    Abstract

    In this work, we present a design that improves signals produced by nuclear magnetic resonance (NMR) and magnetic resonance imaging by using optical pumping and a high- Tc superconducting quantum interference device (SQUID) magnetometer. In our design for a NMR detection system, a pickup coil is coupled to the spin procession of a H3 e nucleus; the input coil is coupled to a high- Tc SQUID magnetometer; and the capacitor is connected in series to form a tank circuit resonating at the Larmor frequency of the H3 e nucleus in the measuring field. A signal-to-noise ratio gain of 2.67 over a conventional Faraday detection coil was obtained with the high- Tc SQUID detection system in a measuring magnetic field equaling 0.1128 mT, at which the central frequency was 3.66 kHz for H3 e nucleus. The improvement in the NMR signal for large-size, hyperpolarized H3 e coupled to a high- Tc SQUID-based spectrometer in low magnetic fields at room temperature is significant compared to that without flux coupling. This result may be of interest given its potential for use in a low field imager.

    Original languageEnglish
    Article number063918
    JournalJournal of Applied Physics
    Volume104
    Issue number6
    DOIs
    Publication statusPublished - 2008 Oct 9

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    interference
    nuclear magnetic resonance
    coils
    augmentation
    magnetometers
    nuclei
    optical pumping
    magnetic fields
    magnetic resonance
    capacitors
    signal to noise ratios
    spectrometers
    sensors
    room temperature

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Enhancement in low field nuclear magnetic resonance with a high- Tc superconducting quantum interference device and hyperpolarized H3 e. / Liao, Shu-Hsien; Yang, Hong-Chang; Horng, Herng-Er; Chen, Hsin Hsien; Yang, Shieh-Yueh; Chen, Ming Jye; Yang, Chang Hau.

    In: Journal of Applied Physics, Vol. 104, No. 6, 063918, 09.10.2008.

    Research output: Contribution to journalArticle

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