کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5406861 | 1393192 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of low and zero magnetic field on the hyperpolarization lifetime in parahydrogenated perdeuterated molecules
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Hyperpolarization can be kept for times longer than T1 if it is maintained in a singlet state, from which transitions are not allowed. Another, more direct, way to slower the relaxation process consists in the use of perdeuterated molecules. Here both methods have been applied and the hyperpolarization (induced by para-H2) decay rate has been measured at two different magnetic fields: earth field and zero field. While relaxation is very slow at earth field, it becomes faster at zero field: this rather unexpected finding has been explained on the basis of isotropic mixing between 1H and 2H.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetic Resonance - Volume 200, Issue 1, September 2009, Pages 15-20
Journal: Journal of Magnetic Resonance - Volume 200, Issue 1, September 2009, Pages 15-20
نویسندگان
Francesca Reineri, Daniela Santelia, Roberto Gobetto, Silvio Aime,