From:	"Gustavo A. Mercier Jr" <gmercier #*at*# mail.med.upenn.edu&g
Date:	Fri, 25 Jul 1997 16:50:09 -0400 (EDT)
Subject:	Re: CCL:Point Q's & Benzen Quadrupole

Hi!

Thanks for the help. I forgot to write the factor of 3, but I did
include it in my computation. The factor of (1/2) is tricky. Some
include it in the definition of the Quadrupole, others don't.
I'll check out Jackson, but I believe you are right.

Thanks!

ps. corrected formula:

   Quad(zz) = (1/2) Sum[i] (3*(Zi)^2 - (Ri)^2)


--
                                      ("`-/")_.-'"``-._
Gustavo A. Mercier,Jr.,MD,PhD         (. . `) -._    )-;-,_()
Division of Nuclear Medicine          (v_,)'  _  )`-.\  ``-
Dept. of Radiology                    _;- _,-_/ / ((,'
University of Pennsylvania           ((,.-'  ((,/
3400 Spruce St.                  gmercier-0at0-mail.med.upenn.edu
Philadelphia, PA 19104         215-662-3069/3091 fax: 215-349-5843




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