Compact, low-cost NMR spectrometer and probe for dissolution DNP.

Autor: Albannay MM; Center for Hyperpolarization in Magnetic Resonance, Department of Health Technology, Technical University of Denmark, Ørsteds Plads, 2800 Kgs. Lyngby, Denmark., Vinther JMO; Center for Hyperpolarization in Magnetic Resonance, Department of Health Technology, Technical University of Denmark, Ørsteds Plads, 2800 Kgs. Lyngby, Denmark., Petersen JR; Center for Hyperpolarization in Magnetic Resonance, Department of Health Technology, Technical University of Denmark, Ørsteds Plads, 2800 Kgs. Lyngby, Denmark., Zhurbenko V; Center for Hyperpolarization in Magnetic Resonance, Department of Health Technology, Technical University of Denmark, Ørsteds Plads, 2800 Kgs. Lyngby, Denmark., Ardenkjaer-Larsen JH; Center for Hyperpolarization in Magnetic Resonance, Department of Health Technology, Technical University of Denmark, Ørsteds Plads, 2800 Kgs. Lyngby, Denmark; GE Healthcare, Brøndby, Denmark. Electronic address: jhar@dtu.dk.
Jazyk: angličtina
Zdroj: Journal of magnetic resonance (San Diego, Calif. : 1997) [J Magn Reson] 2019 Jul; Vol. 304, pp. 7-15. Date of Electronic Publication: 2019 Apr 25.
DOI: 10.1016/j.jmr.2019.04.016
Abstrakt: The desire for higher magnetic resonance sensitivity has led to the development of multiple home-built and commercial dissolution dynamic nuclear polarization polarizers. The emergence of polarizers capable of variable magnetic field strengths desires a versatile standalone spectrometer and NMR circuit to fulfill detection needs at different frequencies. We present a benchtop NMR spectrometer with a duplexer capable of serving high-field solid and liquid state NMR applications up to 450 MHz. A detailed view of the employed probe is discussed. Tuning and matching schemes are investigated yielding and experimentally verifying closed-form equations to estimate the nutation frequency for a remotely tuned and matched sample coil.
(Copyright © 2019 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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