When cleaning the ceramics of the ion source for our Delta Plus XL I
used a bead blaster to get rid of the ion burn rather than a diamond
file.  The end result is the same.  But the next step in the procedure
(found in the manual) is to anneal the ceramics.  Does anyone know the
reason for annealing?  I wonder if it closes off pore spaces in the
ceramics that are exposed when abrasively cleaned.  The reason I think
this is that I did not follow this step, and now my CO peaks on the
Delta are now slow to rise and slow to fall, as if some CO is getting
trapped in the system somewhere.

Any thoughts?  Is annealing necessary?


Tim Prokopiuk

Tim Prokopiuk
B. Sc. Geology/Technician
Saskatchewan Isotope Laboratory
Room 241
Department of Geological Sciences
University of Saskatchewan
114 Science Place
Saskatoon, Saskatchewan, Canada
S7N 5E2
Phone:  (306) 966-5712
Fax:            (306) 966-8593
Email:  [log in to unmask]