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Figure 2
Illustration of the oversampling requirement from the point of view of detector angular resolution in a double-slit experiment. (a) The detector pixel size corresponds to an angular resolution that is equal to the highest spatial frequency 2π/L, and no intensity modulations due to interference can be observed in this case. (b) Intensity variations can be observed if the detector pixel size corresponds to an angular width π/L and the pixels are spaced at π/L, which is half of the highest spatial frequency. Now the Fourier space is `oversampled' by a factor of two compared with (a).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 11| Part 5| August 2004| Pages 432-438
doi:10.1107/S0909049504016772
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