We report proton spin noise spectra of a hyperpolarized solid sample of commonly used "DNP juice" containing TEMPOL and irradiated by a microwave field at a temperature of 1.2 K in a magnetic field of 6.7 T. The line shapes of the spin noise power spectra are sensitive to the variation of the microwave irradiation frequency and change from dip to bump, when the electron Larmor frequency is crossed, which is shown to be in good accordance with theory by simulations. Small but significant deviations from these predictions are observed, which can be related to spin noise and radiation damping phenomena that have been reported in thermally polarized systems. The non-linear dependence of the spin noise integral on nuclear polarization provides a means to monitor hyperpolarization semi-quantitatively without any perturbation of the spin system by radio frequency irradiation.
Nuclear spin hyperpolarization of the solvent using signal amplification by reversible exchange (SABRE)
From The DNP-NMR Blog:
Nuclear spin hyperpolarization of the solvent using signal amplification by reversible exchange (SABRE)
Moreno, K.X., et al., Nuclear spin hyperpolarization of the solvent using signal amplification by reversible exchange (SABRE). J Magn Reson, 2015. 257: p. 15-23.
http://www.ncbi.nlm.nih.gov/pubmed/26037136
The role of level anti-crossings in nuclear spin hyperpolarization
The role of level anti-crossings in nuclear spin hyperpolarization
Publication date: August 2014
Source:Progress in Nuclear Magnetic Resonance Spectroscopy, Volume 81</br>
Author(s): Konstantin L. Ivanov , Andrey N. Pravdivtsev , Alexandra V. Yurkovskaya , Hans-Martin Vieth , Robert Kaptein</br>
Nuclear spin hyperpolarization is an important resource for increasing the sensitivity of NMR spectroscopy and MRI. Signal enhancements can be as large as 3–4 orders of magnitude. In hyperpolarization experiments, it is often desirable to transfer the initial...
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08-24-2014 04:05 PM
The role of level anti-crossings in nuclear spin hyperpolarization
From The DNP-NMR Blog:
The role of level anti-crossings in nuclear spin hyperpolarization
Ivanov, K.L., et al., The role of level anti-crossings in nuclear spin hyperpolarization. Prog. NMR. Spec., 2014. 81(0): p. 1-36.
http://www.sciencedirect.com/science/article/pii/S0079656514000454
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08-18-2014 10:14 PM
Toward nanomolar detection by NMR through SABRE hyperpolarization
From The DNP-NMR Blog:
Toward nanomolar detection by NMR through SABRE hyperpolarization
Eshuis, N., et al., Toward nanomolar detection by NMR through SABRE hyperpolarization. J Am Chem Soc, 2014. 136(7): p. 2695-8.
http://www.ncbi.nlm.nih.gov/pubmed/24475903
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05-09-2014 07:01 PM
TowardNanomolar Detection by NMR Through SABRE Hyperpolarization
TowardNanomolar Detection by NMR Through SABRE Hyperpolarization
Nan Eshuis, Niels Hermkens, Bram J. A. van Weerdenburg, Martin C. Feiters, Floris P. J. T. Rutjes, Sybren S. Wijmenga and Marco Tessari
http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/0/jacsat.ahead-of-print/ja412994k/aop/images/medium/ja-2013-12994k_0006.gif
Journal of the American Chemical Society
DOI: 10.1021/ja412994k
http://feeds.feedburner.com/~ff/acs/jacsat?d=yIl2AUoC8zA
http://feeds.feedburner.com/~r/acs/jacsat/~4/CRRo27dOPlc
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The Observation and Dynamics of 1H NMR Spin Noise in Methanol
From The DNP-NMR Blog:
The Observation and Dynamics of 1H NMR Spin Noise in Methanol
Jurkiewicz, A., The Observation and Dynamics of 1H NMR Spin Noise in Methanol. Appl. Magn. Reson., 2013: p. 1-18.
http://dx.doi.org/10.1007/s00723-013-0473-7
Spin Noise Detection of Nuclear Hyperpolarization at 1.2 K
Linear Mode
