{TAIL ~ The extraction efficiency} is proportional to {HEAD ~ the magnitude} of the corresponding Fourier component of the dielectric function ∈G given by 
{ TAIL ~ The extraction efficiency } is proportional to { HEAD ~ the magnitude } of the corresponding Fourier component of the dielectric function ∈G given by
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH