Range profiles of Hg+, Hg2+, and Hg3+ in polymer polyvinylalcohol

Abstract
Depth profiles of Hg+, Hg2+, and Hg3+ implanted in polymer polyvinylalcohol at energies from 50 to 600 keV are measured by 2.1‐MeV 4He2+ Rutherford backscattering. Based on Biersack’s angular diffusion model, a computer program is written for comparison with the experimental values. The result shows that the measured projected range is in good agreement with the calculated value for first‐order treatment. The experimentally determined range straggling is still higher than the calculated value after considering the second‐order energy loss. The Monte Carlo simulation shows that the Hg profile is not described by an ionization or nuclear damage profile, but rather is described by a classical predicted implantation profile.

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