a nuclear magnetic resonance(nmr) study on glycerin and ...belz/phys6719/presentations/zhai_nmr.pdfa...

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A Nuclear Magnetic Resonance(NMR) study on

Glycerin and Fluorine

Yaxin Zhai University of Utah,

Department of Physics and Astronomy 04/17/2012

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l Introduction

l Experimental Description

l Results and Discussion:

I.  Gyromagnetic Ratios II.  Transverse Relaxation Time III.  Homogeneity of the Magnetic Field IV.  T2 Relaxation Time

l Conclusion

Contents

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Introduction

Nuclear Magnetic Resonance(NMR): A physical phenomenon in which magnetic nuclei in a magnetic field absorb and re-emit electromagnetic radiation.

Resonance Frequency.

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Experimental Description

Symantec of setup

Experimental Description

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Modulating(sweeping) Field

Experimental Description

Samples:

Glycerin 1H

Fluorine 19F

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Results and Discussion Gyromagnetic Ratios

Measured: � Published: �

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Results and Discussion

with

Glycerin 467.4±1.3 µs < Fluorine 687.0±6.8 µs �

Transverse Relaxation Time

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Results and Discussion Homogeneity of the Magnetic Field

Glycerin 0.0022T Fluorine 0.0085T 8

Results and Discussion T2 Relaxation Time

A more sophisticated experimental method is required to measure T2 9

Conclusion

Conclusion

l  Gyromagnetic ratios: 42.5±2.4 MHz/T for glycerin, 40.1±0.3 MHz/T for fluorine.

l  Glycerin has a shorter transverse relaxation time than fluorine.

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