# NMR Signal Processing Lab: Two Spins-1/2

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This is a Demonstration of signal processing in Fourier-transform nuclear magnetic resonance (NMR) spectroscopy. The time-domain, free induction decay signal for two coupled spins-1/2 is plotted in red. The Fourier transform frequency domain spectrum is shown in blue. The spin Hamiltonian is given by , where the sum and difference of the chemical shifts are given by and , respectively, and is the scalar coupling constant (all in Hertz). Zero and first-order phasing of the spectrum are controlled by and .

Contributed by: Russ Bowers (September 2011)

(Department of Chemistry, University of Florida)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

Reference

[1] M. H. Levitt, *Spin Dynamics: Basics of Nuclear Magnetic Resonance*, 2nd ed.,Wiley, http://www.wiley.com/WileyCDA/WileyTitle/productCd-0470511176.html.

## Permanent Citation

"NMR Signal Processing Lab: Two Spins-1/2"

http://demonstrations.wolfram.com/NMRSignalProcessingLabTwoSpins12/

Wolfram Demonstrations Project

Published: September 21 2011