Electron impact ionization cross sections of beryllium and beryllium hydrides Thana Maihom, Ivan Sukuba, Ratko Janev, Kurt Becker, Tilmann Märk, Alexander Kaiser, Jumras Limtrakul, Jan Urban, Pavel Mach and Michael Probst Eur. Phys. J. D, 67 1 (2013) 2 Published online: 17 January 2013 DOI: 10.1140/epjd/e2012-30691-1