Hi Klika,
If you're talking solid-state NMR and high-power decoupling, there's an
equation you can use to estimate the correct decoupling. It's in the attached
PDF. Also, test the value you get for the equation to see if the acquisition
circuit doesn't overflow. If so, adjust the pulses until you find something
that fits (for instance, at the last solid-state lab I worked in, we set the
13C pulse to 50 kHz, 1H to 100 kHz, and a high-power dec. of 90 kHz - we
used spinal64 for that).
For liquid-state NMR, you're using only low-power decoupling so don't need
to bother about it.
----------------
Dr. Igor d'Ancićes Almeida Silva
Research Scientist - NMR Core
University of Missouri-Columbia
32A Chemistry Building
________________________________
> From: main_at_ammrl.groups.io on behalf of Karel Klika via groups.io
> Sent: Friday, September 19, 2025 6:46 AM
> To: main_at_ammrl.groups.io
> Subject: [AMMRL] determining maximum decoupling power
Dear all,
How to determine the maximum decoupling power that can be safely applied and
how this varies with the time for which the decoupling is applied ?
Thanks in advance and will post a summary if appropriate.
Regards,
K. Klika
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13C Detection - 3.2 mm Rotor.pdf: https://ammrl.groups.io/g/main/sattachment/890356351744863862/257347636/0/07d3e74a84f1bef860125219013753d3985af1f2c2be737d89e452b3b95928ef
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Received on Fri Sep 19 2025 - 08:08:52 MST