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18 lines
629 B
Matlab
18 lines
629 B
Matlab
function [dof,pixel_size] = DOF_calculator(energy, det_pixel, det_N, distance, alpha)
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%Calculate theoreical depth of focus for X-ray ptychography
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% Inputs:
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% **energy beam energy (keV)
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% **det_pixel detector pixel size (m)
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% **det_N # of pixels in the detector
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% **distance # sample to detector distance (m)
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% **alpha additional scaling coefficient
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% *returns*:
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% ++dof depth of focus for ptychography
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lambda = 1.23984193e-9/energy; % wavelength (m)
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pixel_size = lambda*distance/(det_pixel)/det_N; %pixel size in ptycho reconstruction (m)
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dof = alpha * pixel_size^2/lambda;
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end
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