11/11/97

but after 100hr the gun becomes unstable (... constant tilt/shift

alignments ...) to the point I have to get into the gun and clean the

wehnelt, which remedies the problem.

The deposits are difficult to remove and I have to resort to judicious

use of diamond paste. I'd much rather find an agent which would remove

these deposits over-night and not attack the SS metal. Has anyone a

better idea??? ... TIA ...

cheerios, shAf

--

<\/>/\<\/>/\<\/>/\<\/> cogito, ergo zZOooOM <\/>/\<\/>/\<\/>/\<\/>

Michael Shaffer, R.A. - University of Oregon Electron Probe Facility

mshaf@oregon.uoregon.edu -or- mshaf@darkwing.uoregon.edu

http://darkwing.uoregon.edu/~mshaf/

with H2O rinses, and I can't imagine this being much of a problem for

stainless steel ... but it *was* strange to see someone else suggest ammonia

... that is, base over an acid attack ... and can I assume the "soap-scum

remover" suggestion is also basic. I can't imagine ammonia being a problem

either, 'cept its suggested use is an over-nite bath ...

thanx again, shAf

--

<\/>/\<\/>/\<\/>/\<\/> cogito, ergo zZOooOM <\/>/\<\/>/\<\/>/\<\/>

Michael Shaffer, R.A. - University of Oregon Electron Probe Facility

mshaf@oregon.uoregon.edu -or- mshaf@darkwing.uoregon.edu

http://darkwing.uoregon.edu/~mshaf/