The dynamic nuclear polarization process
β Scribed by S.T. Goertz
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 381 KB
- Volume
- 526
- Category
- Article
- ISSN
- 0168-9002
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## Abstract This study describes quantitatively the effect of O~2~ on the dynamic nuclear polarization (DNP) of water protons. It is shown theoretically how DNP enhancement is altered by the paramagnetism of O~2~. The nonlinear effect of oxygen on the enhancement factor has been approximated by a f
A proton dynamic nuclear polarization (DNP) NMR signal enhancement (β) close to thermal equilibrium, β β«Ψβ¬ 0.89, has been obtained at high field (B 0 β«Ψβ¬ 5 T, epr β«Ψβ¬ 139.5 GHz) using 15 mM trityl radical in a 40:60 water/glycerol frozen solution at 11 K. The electron-nuclear polarization transfer i