1503 
Similarly from equation (46); 
Ye fu) = AcosE- Bsn € 
mM 
i pup 
CS pia) exp lie + ime fa] ete 
(53) 
Since we shall denote the known incident wave by 
f\ > it will be convenient to determine p in terms of fi or 
its Fourier transform. Expressing fy as a Fourier integral: 
Liu) = Gry] Peo) exp Gun) hee 
(54) 
where wi 
We) = enI*/. £ (vy) exp(-twrjav 
(55) 
—od 
Comparing equations (52) and (54), we see that: 
BA ge) exp (Cvene/e) 
fae (56 )’ 
and combining equations (53) and (56): 
pew) 
a ; oP /w w 
From here on the solution becomes identical with 
that of equation (10) in section 2 above. 
~- 27 - 
