[Sneap] tungsten mesh sought for gridded einzel

Albert Zondervan A.Zondervan at gns.cri.nz
Wed Oct 31 18:58:02 EDT 2007


Hi SNEAPers

>> Where do I source electroformed tungsten mesh ?
I am servicing a gridded Einzel lens and its tungsten, 1mm pitch, grid has 
deteriorated somewhat. I think the existing grid was custom-made a long 
time ago by an american company, via electroforming. Obviously, 
light-optical transmission should be >=90%. Minimum required area 100x100 
mm2.

Your suggestions and comments most welcome. If you have some spare on 
hand, I'll be happy to pay costs.

cheers
Albert
-- 
Albert Zondervan
National Isotope Centre
GNS Science                              A.Zondervan at gns.cri.nz
PO Box 31-312, Lower Hutt                ph: +64 4 570-4617
New Zealand                              fx: +64 4 570-4657


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