K-shell ionization cross section of aluminium induced by low-energy highly charged argon ions X. M. Chen, J. X. Shao, Z. H. Yang, H. Q. Zhang, Y. Cui, X. Xu, G. Q. Xiao, Y. T. Zhao, X. A. Zhang and Y. P. Zhang Eur. Phys. J. D, 41 2 (2007) 281-286 Published online: 20 October 2006 DOI: 10.1140/epjd/e2006-00233-9