Mike,

We have one partially functional Nuclide 6-60-RMS (1976-1978 vintage) and
parts from a Nuclide 3-60-RMS (dismantled and cannabalized for other uses).
Which source or emission control do you have? We are now using a MEC-4 from
the 3-60-RMS.

Glen




                      Mike Kubo
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                      ASA.GOV>                 cc:
                      Sent by: Stable          Subject:  Help with Nuclide IRMS Problems
                      Isotope
                      Geochemistry
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                      04/08/04 05:04 PM
                      Please respond to
                      Stable Isotope
                      Geochemistry






I am curious if anyone in the community is familiar with old Nuclide brand
IRMSs.  I am currently having problems with our VERY old Nuclide and was
hoping someone would have some insight into what might be going on.  A
quick bit of info without bogging down the list: signal went to zero while
analyzing the standard gas.  Magnet is functional, filament is showing
current, trap is showing voltage, and emission ion accelerating potentials
look fine.  However, when I switch from the manual regulation of trap
current to the “reg trap current” position, the signal and voltage readout
go to zero.





Any help is greatly appreciated.








Michael Kubo


NASA Ames Research Center


M/S 239-4


Moffett Field, CA 94035





Lab: (650) 604-6110