Material dependence on the mean charge state of light ions in titanium, zirconium and copper Jennifer Schofield, Jay A. LaVerne, Daniel Robertson, Philippe Collon and Simon M. Pimblott Eur. Phys. J. D, 73 10 (2019) 211 Published online: 17 October 2019 DOI: 10.1140/epjd/e2019-100144-8