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000061830 0247_ $$2DOI$$a10.1016/j.jmr.2008.01.004
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000061830 041__ $$aeng
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000061830 084__ $$2WoS$$aBiochemical Research Methods
000061830 084__ $$2WoS$$aPhysics, Atomic, Molecular & Chemical
000061830 084__ $$2WoS$$aSpectroscopy
000061830 1001_ $$0P:(DE-HGF)0$$aArmstrong, B. D.$$b0
000061830 245__ $$aPortable X-band system for solution state dynamic nuclear polarization
000061830 260__ $$aAmsterdam [u.a.]$$bElsevier$$c2008
000061830 300__ $$a273 - 281
000061830 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000061830 440_0 $$09881$$aJournal of Magnetic Resonance$$v191$$x1090-7807$$y2
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000061830 520__ $$aThis paper concerns instrumental approaches to obtain large dynamic nuclear polarization (DNP) enhancements in a completely portable system. We show that at fields of 0.35 T under ambient conditions and at X-band frequencies, 1H enhancements of >100-fold can be achieved using nitroxide radical systems, which is near the theoretical maximum for 1H polarization using the Overhauser effect at this field. These large enhancements were obtained using a custom built microwave transmitter and a commercial TE102 X-band resonant cavity. The custom built microwave transmitter is compact, so when combined with a permanent magnet it is readily transportable. Our commercial X-band resonator was modified to be tunable over a range of approximately 9.5-10 GHz, giving added versatility to our fixed field portable DNP system. In addition, a field adjustable Halbach permanent magnet has also been employed as another means for matching the electron spin resonance condition. Both portable setups provide large signal enhancements and with improvements in design and engineering, greater than 100-fold 1H enhancements are feasible.
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000061830 588__ $$aDataset connected to Web of Science, Pubmed
000061830 650_2 $$2MeSH$$aEquipment Design
000061830 650_2 $$2MeSH$$aEquipment Failure Analysis
000061830 650_2 $$2MeSH$$aMagnetic Resonance Spectroscopy: instrumentation
000061830 650_2 $$2MeSH$$aMagnetic Resonance Spectroscopy: methods
000061830 650_2 $$2MeSH$$aMicrowaves
000061830 650_2 $$2MeSH$$aReproducibility of Results
000061830 650_2 $$2MeSH$$aSensitivity and Specificity
000061830 650_7 $$2WoSType$$aJ
000061830 65320 $$2Author$$adynamic nuclear polarization
000061830 65320 $$2Author$$aX-band DNP
000061830 65320 $$2Author$$aOverhauser effect
000061830 65320 $$2Author$$aportable DNP
000061830 7001_ $$0P:(DE-HGF)0$$aLingwood, M.D.$$b1
000061830 7001_ $$0P:(DE-HGF)0$$aMcCarney, E.R.$$b2
000061830 7001_ $$0P:(DE-HGF)0$$aBrown, E.R.$$b3
000061830 7001_ $$0P:(DE-Juel1)VDB49819$$aBlümler, P.$$b4$$uFZJ
000061830 7001_ $$0P:(DE-HGF)0$$aHan, S.$$b5
000061830 773__ $$0PERI:(DE-600)1469665-4$$a10.1016/j.jmr.2008.01.004$$gVol. 191, p. 273 - 281$$p273 - 281$$q191<273 - 281$$tJournal of magnetic resonance$$v191$$x1090-7807$$y2008
000061830 8567_ $$uhttp://dx.doi.org/10.1016/j.jmr.2008.01.004
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000061830 9141_ $$y2008
000061830 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
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