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Re: Primary Qs
On Fri, 4 Oct 1996, Tesla List <tesla-at-poodle.pupman-dot-com> wrote:
>>From ed-at-alumni.caltech.eduFri Oct 4 22:14:01 1996
>Date: Fri, 4 Oct 1996 17:18:34 -0700 (PDT)
>From: "Edward V. Phillips" <ed-at-alumni.caltech.edu>
>To: tesla-at-pupman-dot-com
>Subject: Re: Primary Qs
>
>Quote:
>>We manufacture a line of gas filled spark gaps, and it has been my job for th
>e
>past few years to characterize them. Static Breakdown voltages are easily
>predicted by use of Paschen's equation which relates the breakdown voltage to
>p
>Question: Who is "we" and can you share your derived constants with us?
>Ed Phillips
>
>
We are EG&G Electro-Optics Division in Salem MA. The Paschen curves
are given by the following equation , where P * d is in Torr-meters.
V = A * P*d / ( Ln( B * P*d / Ln ( 1/ Gamma)))
use the following parameters.
N2+3%O2 H2 Xe A He
Gamma = 0.06 0.06 0.06 0.06 0.06
A= 33.29 15.63 9.156 6.96 2.50
B= 1537 993 294 605 161
Gamma is the secondary electron coefficient, electrons/ion.
I have data for other gases that I will send later.