• Lebeau, J. M.
• Allen, L. J.
• Dalfonso, A. J.
• Dycus, J. H.
• Xu, W.
• Sang, X.
• Chen, Z.

Abstract

Here we report the influence of key experimental parameters on atomically resolved energy dispersive X-ray spectroscopy (EDX). In particular, we examine the role of the probe forming convergence semi-angle, sample thickness, lattice spacing, and dwell/collection time. We show that an optimum specimen-dependent probe forming convergence angle exists to maximize the signal-to-noise ratio of the atomically resolved signal in EDX mapping. Furthermore, we highlight that it can be important to select an appropriate dwell time to efficiently process the X-ray signal. These practical considerations provide insight for experimental parameters in atomic resolution energy dispersive X-ray analysis

Topics

• forming
• Energy-dispersive X-ray spectroscopy