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Solid Echo (spins centered off resonance)-
In this case we apply a 90 degree pulse along the x-axis (represented by the big gold arrow) and then another 90 degree pulse along the y-axis some time later. After the first 90 degree pulse the spins dephase and make a "pancake" in the x-y plane. After the second 90 degree pulse it appears as if this pancake separates into many other pancakes and then they all refocus into a nice 3-D figure-8 pattern. Enjoy!
More Animations:
Hahn Echo (90x pulse - Delay - 180y pulse - Echo)
Small
spread around resonance (FWHM=10Hz)
Big
spread around resonance (FWHM=30Hz)
Solid Echo (90x pulse - Delay - 90y pulse - Echo)
Spins
centered around resonance
Spins
centered off resonance
Powered by the Gizmo XOP in Igor 4.05a by Wavemetrics. Thanks A.G.!
To request an animation for a particular spin manipulation please contact us.