Pulsed Field Gradient (PFG) - Nuclear Magnetic Resonance (NMR) Method
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چکیده
منابع مشابه
Pulsed Nuclear Magnetic Resonance
What we call “nuclear magnetic resonance” (NMR) was developed simultaneously but independently by Edward Purcell and Felix Bloch in 1946. The experimental method and theoretical interpretation they developed is now called “continuous-wave NMR” (CWNMR). A different experimental technique, called “pulsed NMR” (PNMR), was introduced in 1950 by Erwin Hahn. Pulsed NMR is used in magnetic resonance i...
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To observe nuclear magnetic resonance, the sample nuclei are first aligned in a strong magnetic field. In this experiment, you will learn the techniques used in a pulsed nuclear magnetic resonance apparatus (a) to perturb the nuclei out of alignment with the field and (b) to measure the small return signal as the misaligned nuclei precess in the field. Because the return signal carries informat...
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group. The spectra, as shown in Figure 2 , can be semiquantitatively reproduced using the LAOCOON computer program with reduced values for the carbon-proton coupling constant^.^ These calculations are approximate because they do not include the asymmetry introduced by the decoupling field or any relaxation effects. We have performed additional experiments which show that it is not necessary for...
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ژورنال
عنوان ژورنال: Nippon Shokuhin Kagaku Kogaku Kaishi
سال: 2018
ISSN: 1341-027X,1881-6681
DOI: 10.3136/nskkk.65.87