Breakdown voltage at submillimeter distances?

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Robert Clark <bobbygc2001@xxxxxxxxx>

 Actually I'm interested in the results at a few
microns. I found this after a web search:

"Under constant atmospheric conditions, it is found
that the breakdown voltage of a uniform field gap may
be expressed in the form:

 V = A*d + B*SQRT(d)   where d is the gap spacing
[i.e., in centimenters - Bob]

 For air under normal conditions:
 A = 24.4kV/cm
 B = 6.29kV/cm^1/2"

 Anyone know if this formula would apply or know a
more accurate formula at the micron scale?


   Bob Clark