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Definition of the Slit Function

We perform a numerical Fourier transform here. Therefore, we need discrete support points. For the calculationii (FFT), it's advantageous if the number of support points is a power of 2 (here 512).

N0 29^: 512

k 0 N0 1 - (range :

(Half) silt width a in arbitrary units

a 10 :

x f x abs a < 10 if :

spalt k f vectorize :

Fouriertransformation

fft_spalt spalt rfft :

k spalt augment

kk 0 N0 2 / (range :

b fft_spalt abs (2^vectorize :

kk fft_spalt abs ( 2 ^ vectorize augment