Growth of electron energies with ion beam injection in a double plasma device M. K. Mishra, A. Phukan, M. Chakraborty and K. S. Goswami Eur. Phys. J. D, 46 2 (2008) 303-306 Published online: 23 November 2007 DOI: 10.1140/epjd/e2007-00316-1