Elastic Recoil Detection Analysis

Elastic Recoil Detection Analysis

Elastic Recoil Detection Analysis (ERDA) is another ion beam analysis that is used to depth profile light elements, most commonly, H or D.  The technique uses a high-energy (MeV) ion beam to bombard the sample surface. Elastic collisions provide chemical information, i.e. the atomic number (Z) of the sample material and thickness based on the scattering depth. ERDA  measures thin-films deposited on substrates like silicon or bulk crystalline materials. These measurements are non-destructive, and standard-less.

    Some specific applications of ERDA are:

    • Direct analysis of H in near surface region
    • Depth profiling is possible for relatively high concentration samples
    • Thin CVD films deposited from organic precursors for H content.



    • 2.5 MV Van de Graaff accelerator with NEC RC 43 end station and nuclear microprobe.

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