Hi Karel
this will depend on the type of probe. There is no global answer for this.
There are indicators that you apply too much. For RT probes usually a drop
in lock level is a strong indicator that too much energy is deposited in
the probe/sample. For cryoprobes there are stricter limits but the coil
heater power is a good indicator there. It will drop somewhat with any
decoupling. If it approaches zero it is too much as the coil temperature
can no longer be regulated. Cryoprobes come with a document that
outlines maximum pulses and power levels.
Clemens
On 9/19/2025 7:46 AM, Karel Klika via groups.io wrote:
>
>
> 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
>
>
>
>
--
==========================
==========================
====================
Clemens Anklin Ph.D. Vice President
Bruker BioSpin NMR Applications & Training
15 Fortune Drive NEW Phone: 978-313-5NMR(5667)
Billerica MA 01821 bluesky: _at_canklin.bsky.social
e-mail: clemens.anklin_at_bruker.com
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==========================
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Received on Fri Sep 19 2025 - 08:08:47 MST