From: reckman@WPI.EDU (Rob Eckman)
Newsgroups: sci.physics.plasma
Subject: Re: Help explain Floating Potential Oscillations
Organization: Worcester Polytechnic Institute
References: <78i90l$21c$1@jupiter.cs.uml.edu>


stewart samuel bushman (sbushman@students.uiuc.edu) wrote:
:
: I'm probing the plasma discharge with a triple electrostatic probe to
: determine electron density and temperature. My problem is with the
: floating probe, or rather, with the floating probe output. I'm seeing
: an oscillatory signal - the floating potential, to a first order,

Stewart,

In my triple probe studies of the PPT plume, I also observed oscillations
of the floating probe potential. However, the positive probe followed
these oscillations as well. Since we're only looking for the voltage
difference (to get electron temp) I never found the oscillations to be a
problem. What are you using to apply your voltage? Maybe there's a
problem there?

I think we met at the JPC in Cleveland last summer.

Rob


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Rob Eckman reckman@wpi.edu