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The combined effects of Doppler broadening, detector spatial resolution, and detector energy resolution on the (a) DCA3 and the (b) FWHM of the PCA in the direction for point sources at the origin. For each curve, the lateral and depth resolutions were simulated as indicated in the legend. The detector energy resolutions δ(E) were calculated from the energy resolution formula for the corresponding material, δHPGe(E) and δCZT(E) for HPGe and CZT, respectively.
