Enhancing soft X-ray emission with depleted uranium in neon plasma focus H. U. Khan, M. Shafiq, S. S. Hussain and M. Zakaullah Eur. Phys. J. Appl. Phys., 48 2 (2009) 21001 Published online: 17 September 2009 DOI: 10.1051/epjap/2009136