Multipole expansion for a spherical layer charge distribution
- From: "Horacius.Rex" <Horacius.Rex.2o7bi4@xxxxxxxxxxxxxxxxx>
- Date: Fri, 30 Mar 2007 13:32:02 +0000 (UTC)
Hi,
I have a random spherical distribution of N charges between radiuses
R1 and R2. N is up to 10^9 or more.I want to calculate the
electrostatic potential closed to the origin of the sphere. R1 and R2
are much bigger than the distance of this point to the origin. So I
thought about using the multipole expansion to calculate the
potential, because it is supposed to reduce the Tcpu a lot, mainly
because in this approach Tcpu proportional to N, and in explicit
electrostatical potential calculation Tcpu proportional to N^2. So,
could you recommendme references in good books or papers or weblinks
with examples of similar calculations ?
Thanks
--
Horacius.Rex
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