Re: [sudo-discuss] [CCL] Re: SEM microscope - sudo-discuss

24 Dec 2014

On Wed Dec 24 Benjamin Rupert wrote:
...
  Besides Cindy's concerns, we will also need a
supply of liquid nitrogen.
 The detectors are liquid nitrogen cooled and need to be replenished 
 daily on most instruments. 
this only applies to an SEM using a Hyper Pure Germanium (HPGe) detector 
such as we would be using for EDS.  Regular SEMs use a photomultiplier 
tube which does not use liquid nitrogen at all.

If we are lucky enough to get an SEM with a HPGe detector (or if we fit 
one on there like the one I got from Urban Ore) we can plan ahead for 
"science days" when we have our samples ready to analyze, and we can bring 
in a quart of liquid nitrogen to last the day while we play with the 
machine.

It's not a big deal.  The only issue that's stopping me is the distance.

-jake