C (x) ■ i- ( q (£) f(x-£) d? (26) 



2ttu. 

 1 L 



where q. is the three-dimensional source strength distributed along the Ox axis. 

 This source strength is the solution of the following Fredholm integral equation of 

 the second kind: 



^-Wh 



(Q f (x-O d£ = a + a (27) 



The kernel function f(x) is given by 



f (x) = £n(2K) $ (x) + — — + tt G (x) - iTT 8(x) (28) 



2|x| 



The Green function G„ in this equation is 



where 



G -(x,y,z;£,n,S) = G(x,y,z;£,n,0 -7-— (29) 



1 



r = [(x-?) 2 +(y-n) 2 +(z-0 2 ] 



and 



1/2 

 2. , ,2., ...2, ' 



r x = [(x-0^+(y-n)"+(z+0 ] 



and G is the three-dimensional Green function given by 



