Use topspin to process and type “apbk”. In command line .. should remove
it.
Automatic phasing and baseline correction..
On Wed, Jan 10, 2024 at 5:31 PM Tom Pratum <tkp9551_at_gmail.com> wrote:
> Hello All-
> We have a fairly new 400 MHz NEO Nano instrument with a broadband iProbe.
> One user is very interested in 27Al, and I note that in this probe there is
> a relatively significant 27Al background signal - I have seen 27Al
> background signals in pretty much every probe I have ever looked at. I have
> attached a plot of the signal (tuned empty probe) as acquired with a 2 usec
> pulse (around a 30 degree pulse at this power level), with the sw maxed out
> at 1.875 MHz, and 8 scans. The central component is around 11 kHz wide.
>
> I find the background signal relatively surprising due to the large number
> of components, and I am thinking the appearance could possible be due to
> one or more spin 5/2 powder patterns in which only the narrowest components
> appear due to how the spectrum was acquired, but really don’t know if that
> is the case. These components are not artifacts as they do move with the
> field.
>
> The user has some pretty broad signals they are interested in
> quantitating, and it would be good to remove the central component of this
> background signal if possible. I can think of a number of characteristics=
-
> such as T2 and rf inhomogeneity - that could be used to remove the signal,
> but they would also likely affect the quantitation to some degree,
>
> Does anyone have any experience in removing this background signal they
> can suggest?
>
> Thanks in advance.
>
>
> Tom Pratum,
> Southern Oregon University
>
>
>
>
>
>
>
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Received on Wed Jan 10 2024 - 18:54:04 MST