Electrometer insulators (fwd)

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Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Mon, 30 Oct 2006 9:11:32 -0800
From: David Dameron <ddameron@xxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Electrometer insulators


Does anyone know of a web page with characteristics of insulators suitable 
for electrometer work? I am investigating an experiment with a metal box which 
would hold gel-cell batteries, a motor, rotating magnets, etc. The charge which 
could be induced on the box is in the range of

10E-14 Coulomb. This metal box would be enclosed in and insulated from an 
Faraday cage.

One candidate is polystyrene, say 4 columns 10cm long. I know teflon is 
good for small printed-circuit use, but do not know how it would perform in this 
type of use. The insulator should not be too much piezoelectric, with 
likely vibrations from the rotating elements.

-Dave D.