Re: diffusion of J-coupled spins

Roy Hoffman (roy@cc.huji.ac.il)
Wed, 22 Dec 1999 08:55:51 +0200 (GMT+0200)

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Dear Dennis,
There is a J-coupling effect only when the gradient pulses are long. Other
distortions to the lineshape occur when the preemphasis is imperfect. I would
recheck the preemphasis and try to shorten the gradient pulse lengths by using
a rectangular pulse (if you are not doing so already) or lengthening the
delay between pulses. Be aware that convection can also ruin your results by
changing the intensities.
Yours,
Roy Hoffman,
Hebrew University.

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