کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5407140 | 1393204 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rapid encoding of T1 with spectral resolution in n-dimensional relaxation correlations
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Nuclear magnetic resonance (NMR) T1 relaxation times have been encoded in the second dimension of two-dimensional relaxation correlation and exchange experiments using a rapid “double-shot” T1 pulse sequence. This technique also retains chemical shift information (δ) for short T2â materials. In this way, a spectral dimension can be incorporated into a T2-T1-δ correlation without an increase in experimental time compared to the conventional, chemically insensitive T1-T2 correlation. Here, the T2-T1-δ pulse sequence is used to unambiguously identify oil and water fractions in a permeable rock. A novel T1-T1-(δ) relaxation exchange measurement is also introduced and used to observe diffusive exchange of water in cellulose fibres.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetic Resonance - Volume 194, Issue 1, September 2008, Pages 156-161
Journal: Journal of Magnetic Resonance - Volume 194, Issue 1, September 2008, Pages 156-161
نویسندگان
T.C. Chandrasekera, J. Mitchell, E.J. Fordham, L.F. Gladden, M.L. Johns,