AMMRL: Solid probe arcing

From: Pierre Audet <Pierre.Audet_at_chm.ulaval.ca>
Date: Wed, 12 Mar 2014 10:30:11 -0400

Deal all

I am working with a static probe for solid and try to pinpoint the source of arcing in that probe.
I modified the coil to accommodate 9mm x 6mm glass plate samples. I record 31P decoupled spectra on a wide bore 400MHz Bruker spectrometer (with 1000 Watts amplifiers).

I cannot use more than about 50Watts of proton decoupling without starting to record spikes in the FID, obviously coming from arcing.
I am running out if ideas on how to fix / pinpoint the problem.

I am asking for suggestions from solid probe specialists out there. Can such a problem be fixed? How do you track down arcing to component level?

Thanks in advance for help or suggestions

Pierre

------
Pierre Audet, Chimiste
Spécialiste résonance magnétique et spectrométrie de masse
Département de chimie
Pavillon Alexandre-Vachon
1045 Avenue de la Médecine
Université Laval (Québec)
CANADA G1V 0A6
Tél: (418) 656-2131 x4296
Fax: (418) 656-7916
Skype: pierre.m.audet
Received on Wed Mar 12 2014 - 04:30:15 MST

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