Ken,
There is a parameter set called topshim1d2h, or something like that. That
should help you to see the z-axis shim profile immediately.
Also, a small shoulder peak should attach to the main peak at the baseline
that you could not shim off with z4 if the probe is dirty or something stuck
there.
Hope this helps and good luck.
Simon
________________________________
> From: main_at_ammrl.groups.io on behalf of Kenneth Shar= p-Knott
> Sent: Thursday, January 4, 2024 12:09 PM
> To: ammrl_at_groups.io <ammrl_at_groups.io>
> Subject: [AMMRL] Shimming issues
I seem to waste a lot of time getting my shims in order when they suddenly
go out of order.... Curious if anyone has a more procedural method correcting
their system shims. I am primarily talking about Bruker instruments of which
I have older ones which are persnickety...
I am also interested in a good way to evaluate if the probe is dirty. I'm
dealing with Prodigy probes so I can't drop them easily. I have seen engineers
determine this by looking at the gradient profile I believe? How is this done?
Best
--
Ken Sharp-Knott
Manager of Analytical Services and the NMR Facility
Department of Chemistry
Virginia Tech
(540)267-6502 (Cell)
(540)231-0885 (Office)
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#890): https://urldefense.com/v3/__https://ammrl.groups.=
io/g/main/message/890__;!!PvDODwlR4mBZyAb0!RJH0kROrxReaH8hb5hl14t-1LdXyvyM1=
my_6Q2PKbulr2_gjBOPH3yjrHFZgTZpwaYGTbVrmy7G1$
Mute This Topic: https://urldefense.com/v3/__https://groups.io/mt/103527672=
/7559972__;!!PvDODwlR4mBZyAb0!RJH0kROrxReaH8hb5hl14t-1LdXyvyM1my_6Q2PKbulr2=
_gjBOPH3yjrHFZgTZpwaYGTbUsplQ_a$
Group Owner: main+owner_at_ammrl.groups.io
-=-=-=-=-=-=-=-=-=-=-=-
Received on Thu Jan 04 2024 - 10:45:56 MST