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Enhancement of surface and biological magnetic resonance using laser-polarized noble gases

✍ Scribed by Brunner, Eike

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
356 KB
Volume
11
Category
Article
ISSN
1043-7347

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✦ Synopsis

Laser-polarized noble gas nuclei such as 3 He or 129 Xe are spin systems far from thermal equilibrium. Their enhanced nuclear spin polarization results in a correspond-( ) ing sensitivity gain in nuclear magnetic resonance NMR experiments. Recent developments in the application of laser-polarized noble gases are summarized in the present article, especially with respect to surface and biological magnetic resonance. Optical pumping and spin exchange, basic processes for the production of laser-polarized noble gases, are described. The enhancement of surface NMR using laser-polarized 129 Xe under continuous flow and magic angle spinning conditions is demonstrated. Spin polarization transfer from laser-polarized 129 Xe nuclei to other nuclei is described. Laser-polarized noble gases are of increasing importance in biological magnetic resonance; their use in clinical magnetic resonance imaging is of special interest. Applications of laser-polarized 129 Xe in solution NMR spectroscopy are also discussed, especially with respect to systems of biological relevance.

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