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Re: Primary Qs





On Tue, 8 Oct 1996, Tesla List <tesla-at-poodle.pupman-dot-com> wrote:
>>From ed-at-alumni.caltech.eduTue Oct  8 22:24:59 1996
>Date: Tue, 8 Oct 1996 19:09:59 -0700 (PDT)
>From: "Edward V. Phillips" <ed-at-alumni.caltech.edu>
>To: tesla-at-pupman-dot-com
>Subject: Re: Primary Qs
>
>Re: Constants for Paschen's law
>	Thanks.  How are these affected by electrode geometry?
>Ed Phillips


The electrode material effects Gamma, the secondary electron 
emission coefficient.  It ranges in value from about .04 to .1
depending on the material.  Since it appears in the logarithm,
the effect is small.  That is why I lumped it with the constant
"B" in my first listing.  The 0.06 value is typical for refractory
metals such as Molybdenum and Tungsten.

Regards

Dave Lockwood